Household battery report

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Explain the report, adjust your budget, and compare one additional EV. Change other household, solar or contract details in the questionnaire.

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Budget applies to known upfront costs. Unspecified installation and other fees remain unknown. Saved comparisons last for this page session.

Original calculation evidence for the displayed report

Household requirement from the energy model: 4.5 kWh · 0.5 kW. Changing the budget does not shrink this need.

Economics status: FULL. Results repeat the reference year's assumptions; they are not a forecast or return guarantee.

Jackery SolarVault 3 Pro Max AC + BP2500 | 2,5 kW - 5,04 kWh

Hardware price / known upfront cost: €1,398 / €1,398

Annual savings / ten-year net / payback: €208.8 / €776.66 / 6.49

Usable capacity is unverified; rated capacity is only a simulation reference ceiling and does not establish a fully eligible product. Power uses the configuration maximum-continuous hardware reference; higher-power commissioning, circuit, metering and Dutch connection conditions require confirmation. Rated capacity reference ceiling 5.04 kWh vs household target 4.50 kWh: 0.54 kWh above. Continuous power 2.5 kW vs household target 0.5 kW: 2.0 kW above. Selected as a close alternative; hourly reference back-calculation runs only when economic inputs are available, without a fully eligible product claim.

Zendure SolarFlow 2400 AC+ & AB3000L | 2,4 kW - 5,28 kWh

Hardware price / known upfront cost: €1,429 / €1,429

Annual savings / ten-year net / payback: €210.56 / €770.4 / 6.56

Usable capacity is unverified; rated capacity is only a simulation reference ceiling and does not establish a fully eligible product. Power uses the configuration maximum-continuous hardware reference; higher-power commissioning, circuit, metering and Dutch connection conditions require confirmation. Rated capacity reference ceiling 5.28 kWh vs household target 4.50 kWh: 0.78 kWh above. Continuous power 2.4 kW vs household target 0.5 kW: 1.9 kW above.

Lunergy Hub 2400 AC + BP5200 | 2,4 kW - 5,22 kWh

Hardware price / known upfront cost: €1,499 / €1,499

Annual savings / ten-year net / payback: €209.96 / €693.77 / 6.89

Usable capacity is unverified; rated capacity is only a simulation reference ceiling and does not establish a fully eligible product. Power uses the configuration maximum-continuous hardware reference; higher-power commissioning, circuit, metering and Dutch connection conditions require confirmation. Rated capacity reference ceiling 5.22 kWh vs household target 4.50 kWh: 0.72 kWh above. Continuous power 2.4 kW vs household target 0.5 kW: 1.9 kW above.

Sources, assumptions and missing information

These figures come from the displayed household calculation and product snapshot. Policy year: 2027

Quick matching compares capacity/power/price only and runs no hourly simulation; all computable configurations enter the hourly back-calculation.
The household physical capacity curves already include 85% round-trip efficiency; capacity is not divided by efficiency again. Curve fit is diagnostic, not a purchase-ranking threshold.
SKU back-calculation uses verified usable capacity where known, otherwise a labelled rated-capacity reference ceiling. All computable in-stock configurations are simulated before selecting the best per model.
Recorded single-phase connection; phase count alone does not determine allowed power. A supplied connection power limit constrains charging and discharging. Circuit, metering and cross-phase delivery require installation verification.
2023 historical hourly prices (Energy-Charts / SMARD, CC BY 4.0) replayed under 2027 policy assumptions.
DYNAMIC candidate back-calculation reuses the same three-scenario economic engine as the savings curve (POST_SALDERING_2027_PLUS + 2026 reference tax); the price series is loaded once per request and reused for every candidate.
85% is the conservative default round-trip efficiency and 90% the sensitivity scenario; efficiency enters only as charge/discharge conversion loss and is never deducted again from usable capacity.
The dynamic dispatch is only presented as the 'dynamic optimised' result when it genuinely beats the PV-only bill under the known fee inputs; if it does not beat PV-only, the candidate is presented as PV-only and the comparison is labelled honestly.
Candidate back-calculation only values household self-consumption; selling battery energy to the grid is an independent electricity trading strategy that is not implemented this round, so expected trading profit never enters any ROI.
Fit against the household curve reference remains a separate diagnostic. Reference objective ranking includes all computable configurations without a soft target-capacity/power tier.
No pair meets this curve-fit diagnostic. All configurations and same-model expansions are still evaluated separately.
Usable capacity or curve fit remains unconfirmed. All computable configurations still enter reference objective ranking, without implying verified installation or usable capacity.
Only provided supplier fees are included; omitted components remain explicit. A historical reference backtest does not guarantee future savings.
A dynamic contract does not automatically confer VAT deduction eligibility; battery trading capability, actual electricity trading, contract eligibility and tax identity remain pending verification, and the default purchase cost continues to use the actual VAT-inclusive price.

Displayed report: Original report

3 people · Annual use 2,950 kWh · PV 3.5 kWp · Dynamic contract · Lower bills

2027+ · net metering ended · reference contract assumptions。The product metrics use this policy start year; weather-year data does not determine net-metering status.

Reference dynamic contract: historical 2023 hourly market prices plus editable assumptions; no supplier guarantee. €0.00／€0.00 per kWh; minimum gross export assumption €0.05/kWh. Scenario payback/ROI only, not historical contract terms or a statutory fee.

1. How large a battery does your household need?

Physical knee reference range

4.50–5.75 kWh

Hourly peak: PV surplus / household deficit

2.80／0.90 kW

Charging / discharging pressure; not measured instantaneous device power.

Based on hourly solar surplus and household deficits, this is a brand-neutral reference for shifting solar energy. The sizing rule awaits real household validation; usable capacity, losses and installation limits require separate verification.

Annual PV-transfer curve knee：0.75／0.50 kW；the joint limits retain approximately 88.4% of that capacity's unconstrained annual transfer. This is a marginal-transfer reference, not a promise to power every device.

View household sizing calculation

Household-first calculation

Align hourly solar generation and household use to find surplus and shortfall.
Compare capacity and charge/discharge power at 85% round-trip efficiency, carrying stored energy across days.
Scan capacity in 0.25 kWh steps. The knee is the largest normalized deviation from the line joining the curve endpoints.
Recalculate each product configuration separately. Keep one main recommendation per brand within the reference-fit group; retain all configurations in the detailed comparison.

Monthly solar generation from historical weather and system size

● pvgis_modeled

Weather year 2023. Calibrated to measured generation when supplied. Reference generation, not a weather forecast.

How much more solar energy does added capacity deliver?

● 1.2 kW● 2.5 kW● 5 kW

The three curves limit charge/discharge power to 1.2, 2.5 and 5 kW, including conversion losses. The reference range uses scans ending at 15 and 30 kWh. The normalized knee is a diagnostic choice requiring measured household validation; it is not the maximum marginal economic benefit.

Power (kW)	Scan limit (kWh)	Knee (kWh)
1.2	15	4.5
1.2	30	5.5
2.5	15	4.5
2.5	30	5.75
5	15	4.5
5	30	5.75

What do charge and discharge power each limit?

● Vary charge power only● Vary discharge power only

Fixed capacity 4.5 kWh; vary one direction while leaving the other unconstrained. A 1.2 kW charger can absorb at most 1.2 kWh per hour. Annual gains depend on surplus timing, free capacity and later demand. Transfer-knee charge/discharge power: 0.75／0.5 kW. Limiting both directions captures approximately 88.4% of the unconstrained solar delivery at this capacity. Modeled hourly surplus/shortfall peaks: 2.8／0.9 kW. A knee in annual energy transfer does not describe instantaneous appliance power or guarantee concurrent EV and heat-pump coverage.

Capacity and conversion losses

The capacity curve already uses 85% round-trip efficiency; do not divide capacity by 0.85 again. Charge and discharge efficiency each equal √0.85 ≈ 0.922. Next SOC = SOC + charging input × charge efficiency − delivery / discharge efficiency. One stored kWh can deliver approximately 0.922 kWh and requires about 1.085 kWh to charge. Published usable capacity still needs verification.

Each product is also evaluated at 85% / 90% reference efficiency. Economic results and the physical capacity curve serve different purposes.

Chart data and original selection notes

Capacity sweep data
kWh	Power kW	Annual shifted kWh	Additional kWh
0	1.2	0.0	0.0
0.25	1.2	80.3	80.3
0.5	1.2	149.2	68.9
0.75	1.2	214.8	65.6
1	1.2	278.9	64.1
1.25	2.5	341.7	62.8
1.5	2.5	402.9	61.2
1.75	2.5	462.1	59.2
2	2.5	519.8	57.7
2.25	2.5	576.1	56.3
2.5	2.5	630.6	54.5
2.75	2.5	684.3	53.8
3	2.5	736.4	52.1
3.25	2.5	787.0	50.6
3.5	2.5	833.1	46.1
3.75	2.5	872.0	38.9
4	2.5	904.9	32.9
4.25	2.5	930.9	26.0
4.5	2.5	952.8	21.9
4.75	2.5	970.3	17.5
5	2.5	984.9	14.6
5.25	2.5	997.0	12.2
5.5	2.5	1,007.6	10.6
5.75	2.5	1,017.5	9.9
6	2.5	1,026.5	9.0
6.25	2.5	1,034.7	8.2
6.5	2.5	1,042.5	7.8
6.75	2.5	1,049.7	7.3
7	2.5	1,055.8	6.0
7.25	2.5	1,060.9	5.1
7.5	2.5	1,065.2	4.3
7.75	2.5	1,069.0	3.8
8	2.5	1,072.7	3.7
8.25	2.5	1,076.3	3.6
8.5	2.5	1,079.6	3.4
8.75	2.5	1,082.7	3.1
9	2.5	1,085.7	3.0
9.25	2.5	1,088.5	2.8
9.5	2.5	1,091.1	2.6
9.75	2.5	1,093.5	2.4
10	2.5	1,095.8	2.3
10.25	2.5	1,097.9	2.1
10.5	2.5	1,099.9	2.1
10.75	2.5	1,101.8	1.8
11	2.5	1,103.6	1.8
11.25	2.5	1,105.4	1.8
11.5	2.5	1,107.3	1.8
11.75	2.5	1,109.0	1.7
12	2.5	1,110.6	1.6
12.25	2.5	1,112.2	1.5
12.5	2.5	1,113.5	1.4
12.75	2.5	1,114.9	1.4
13	2.5	1,116.3	1.4
13.25	2.5	1,117.7	1.4
13.5	2.5	1,119.1	1.4
13.75	2.5	1,120.5	1.4
14	2.5	1,121.7	1.3
14.25	2.5	1,122.9	1.2
14.5	2.5	1,124.0	1.2
14.75	2.5	1,125.2	1.2
15	2.5	1,126.4	1.2
15.25	2.5	1,127.5	1.2
15.5	2.5	1,128.7	1.2
15.75	2.5	1,129.8	1.2
16	2.5	1,131.0	1.2
16.25	2.5	1,132.1	1.2
16.5	2.5	1,133.3	1.2
16.75	2.5	1,134.4	1.2
17	2.5	1,135.6	1.2
17.25	2.5	1,136.7	1.2
17.5	2.5	1,137.7	0.9
17.75	2.5	1,138.6	0.9
18	2.5	1,139.4	0.8
18.25	2.5	1,140.1	0.7
18.5	2.5	1,140.8	0.7
18.75	5.0	1,141.3	0.6
19	5.0	1,141.8	0.5
19.25	5.0	1,142.3	0.5
19.5	5.0	1,142.7	0.5
19.75	5.0	1,143.2	0.5
20	5.0	1,143.7	0.5
20.25	5.0	1,144.1	0.5
20.5	5.0	1,144.6	0.5
20.75	5.0	1,145.0	0.5
21	5.0	1,145.5	0.5
21.25	5.0	1,146.0	0.5
21.5	5.0	1,146.4	0.5
21.75	5.0	1,146.9	0.5
22	5.0	1,147.3	0.5
22.25	5.0	1,147.8	0.5
22.5	5.0	1,148.3	0.5
22.75	5.0	1,148.7	0.5
23	5.0	1,149.2	0.5
23.25	5.0	1,149.6	0.5
23.5	5.0	1,150.1	0.5
23.75	5.0	1,150.6	0.5
24	5.0	1,151.0	0.5
24.25	5.0	1,151.5	0.5
24.5	5.0	1,152.0	0.5
24.75	5.0	1,152.4	0.5
25	5.0	1,152.9	0.5
25.25	5.0	1,153.3	0.5
25.5	5.0	1,153.8	0.5
25.75	5.0	1,154.3	0.5
26	5.0	1,154.7	0.5
26.25	5.0	1,155.2	0.5
26.5	5.0	1,155.6	0.5
26.75	5.0	1,156.1	0.5
27	5.0	1,156.6	0.5
27.25	5.0	1,157.0	0.5
27.5	5.0	1,157.5	0.5
27.75	5.0	1,157.9	0.5
28	5.0	1,158.4	0.5
28.25	5.0	1,158.9	0.5
28.5	5.0	1,159.3	0.5
28.75	5.0	1,159.6	0.3
29	5.0	1,159.8	0.2
29.25	5.0	1,160.1	0.2
29.5	5.0	1,160.3	0.2
29.75	5.0	1,160.5	0.2
30	5.0	1,160.8	0.2

Original model records

Brand-neutral PV-only reference, 85% round-trip efficiency in charge/discharge steps; no capacity division by efficiency.
Capacity curves: 0–30 kWh at 0.25 kWh steps and 1.2/2.5/5 kW. Normalized chord-distance knee evaluated in both 0–15 and 0–30 kWh windows.
Scan/power sensitivity: 4.5–5.75 kWh; diagnostic range, not a purchase minimum, economic optimum or universal physical law.
Charge and discharge are swept independently at selected capacity with the other direction unconstrained; their curve knees are replayed together.
The physical reference is shared by both objectives. Products are evaluated independently with their own specifications and prices; budget and economics determine purchase tradeoffs.

The selection rule is provisional and requires validation against real household data.

2. Which products fit this need?

All computable configurations are simulated first. The main candidates meet the lower capacity reference and annual-transfer power knee; peak coverage is shown separately, then rank by ten-year net benefit, one per brand. Smaller economic alternatives are shown separately.

Reference matching uses each product's published nominal capacity and applicable continuous power. Usable-capacity data is absent or its measurement basis is unresolved, so the scenarios use nominal capacity with 85% round-trip efficiency. Installation conditions require separate confirmation.

Simulation of the 2027 net-metering cancellation (€0.15/kWh export-fee assumption) — comparison on each product card

Reference candidate 1

Jackery SolarVault 3 Pro Max AC + BP2500 | 2,5 kW - 5,04 kWh

Rated capacity reference: 5.04 kWh
Charge / discharge reference: 2.50 / 2.50 kW
Bundle price: €1,398 incl. VAT
Capacity reference fit: Nominal capacity meets lower reference
PV peak absorption: Partial absorption; surplus may be exported
Demand peak coverage: Power sufficient for modeled peak

Peak coverage compares power limits only; actual delivery also depends on stored energy and available charge space.

Reference choice 1 by ten-year net benefit.

2027+ · net metering ended · reference contract assumptions

Annual net savings

€208.80

Annual net energy savings: 896.8 kWh
PV self-consumption: 56.8%
PV share of household demand: 66.4%
Payback: ≈ 6.5 years
Ten-year net benefit: +€776.66

2027+ · €0.15/kWh export-fee assumption

Annual net savings: €381.63
Payback with fee: 3.64 years
Ten-year net with fee: +€2,507.48

View product

View this product's calculation

Simulated capacity / charge / discharge / round-trip efficiency：5.04 kWh ／ 2.50 ／ 2.50 kW ／ 85%。Rated-capacity references are not verified usable capacity.

Annual net savings
Bill without battery − bill with battery = bill savings
€324.97 − €116.17 ＝ €208.80。
Bill savings − included annual operating cost = net savings
€208.80 − €0.00 ＝ €208.80。
Annual net energy savings
Grid purchases without − with battery
1,960.3 − 1,063.5 ＝ 896.8 kWh。Grid charging is included; a negative value means buying more electricity. Household use does not decrease.
Effective PV self-consumption
(Direct PV use + PV-origin battery delivery) / PV generation ＝ 56.8%。
PV / grid-origin battery delivery：967.7／401.9 kWh；conversion loss 241.7 kWh。Grid energy and losses are excluded from effective PV use.
Payback
Start at the negative initial investment and accumulate each year's net cash flow. Payback is the first crossing of zero, interpolated within that year.
≈ 6.5 years。
Ten-year net benefit
Sum of ten annual net cash flows − initial investment
€2,174.66 − €1,398.00 ＝ +€776.66。The projection uses the model's policy changes and entered savings reduction; it is not ten times the first-year figure.

Unknown costs are not included; incomplete contract figures are partial estimates, with unconfirmed payback.

Matching evidence, bills and charts

Usable capacity is unverified; rated capacity is only a simulation reference ceiling and does not establish a fully eligible product.
Power uses the configuration maximum-continuous hardware reference; higher-power commissioning, circuit, metering and Dutch connection conditions require confirmation.
Rated capacity reference ceiling 5.04 kWh vs household target 4.50 kWh: 0.54 kWh above.
Continuous power 2.5 kW vs household target 0.5 kW: 2.0 kW above.
Selected as a close alternative; hourly reference back-calculation runs only when economic inputs are available, without a fully eligible product claim.
All computed models and expansions compete within their brand; retain the best ten-year net configuration per brand, then compare brands.

Hardware charge / discharge limits：2.50 ／ 2.50 kW

Maximum continuous hardware reference assumes the required circuit, professional installation and app settings. Installation permission and costs remain unverified.
Base unit: 1.8 kW charging and 2.5 kW grid output. With BP2500, charging is 2.5 kW. The 5 kW short peak is excluded from the backtest.

Specification source1 Specification source2

How much can you save per year after installing a battery?

Annual reference bill: no battery vs this configuration

Annual net bill without battery

€325/yr

With this reference configuration

€116/yr

Difference (annual savings)

€209/yr

PV returned to the grid

Without / with battery: 2,459.0 ／ 1,320.6 kWh/year

Net export income without / with: +€162.71 ／ +€85.42

Negative net export means export fees exceed gross compensation. Gross compensation protection does not cancel export fees. Unknown fees make this a partial ledger.

Bill breakdown for this reference configuration (85%)

Bill component	No battery	With battery	Difference
Grid import cost	€223.46	€69.17	+€154.29
Energy tax and VAT	€264.22	€132.42	+€131.80
Raw gross export compensation	€152.49	€79.48	+€73.01
Monthly gross protection adjustment	€10.21	€5.94	+€4.27
Gross compensation after protection	€162.71	€85.42	+€77.29
Known feed-in costs	€0.00	€0.00	€0.00
Net export income = gross minus export fees	€162.71	€85.42	+€77.29
Other known variable fees	€0.00	€0.00	€0.00
Net annual bill	€324.97	€116.17	+€208.80

Solar control is unknown. Without curtailment, annual battery savings are €208.80; with confirmed curtailment applied to both cases, annual battery savings are €207.14. These compare different control conditions; unknown contract terms still require verification.

Known upfront investment: €1,398
Annual net benefit after operating costs: €208.80/yr
Simple payback: ≈ 6.5 years
10-year reference cumulative net benefit: €777
10-year reference ROI: 55.6%

Annual savings = bill without battery − bill with battery under the SAME scenario; both use identical household inputs, prices, efficiency, operating strategy and annual SOC rule.

Dynamic contracts keep the PV-only vs optimised-charging distinction: the optimised dispatch is only shown when it genuinely beats the PV-only bill under the known fee inputs.

Reference operating scenario: dynamic optimised dispatch (rolling historical day-ahead price window, V2); the product's own smart modes are unverified.; rated-capacity reference ceiling; usable capacity remains unverified. Maximum continuous power installation conditions require confirmation. Hardware price excludes unverified meter, installation and subscription costs.

Long-term economic figures use the steady-state repeated-year rule: run the same price year once from zero SOC to obtain an ending SOC, then re-run the same year with that ending SOC as the starting SOC.

Year-boundary inventory rule: iterate each policy from empty until annual start/end SOC agree within 1e-7 kWh (maximum 20 iterations); the primary product and all candidates use exactly the same rule. Ending stored energy is never monetised as bill savings and is never assumed to be fully deliverable to the household or sold to the grid.

Start / end SOC: 0.00 → 0.00 kWh

The first-year result starting from an empty battery is shown only as a separate scenario and is never mixed into the steady-state annual figures.

Separate first-year-from-empty scenario savings: €208.80/yr

Cost breakdown：Hardware €1,398.00。Unquoted costs remain unknown.

Monthly bill savings (EUR)

Same hourly dispatch grouped by Amsterdam month. Bar labels show savings; hover for savings and bills.

Monthly data and reconciliation

Month	Without battery	With battery	Difference
1	€58.00	€43.14	€14.86
2	€37.61	€23.46	€14.16
3	€27.78	€8.83	€18.94
4	€15.46	€-8.58	€24.04
5	€8.40	€-11.55	€19.95
6	€-0.50	€-18.64	€18.14
7	€11.37	€-8.78	€20.15
8	€13.22	€-6.63	€19.85
9	€16.59	€-7.22	€23.81
10	€39.95	€21.97	€17.98
11	€46.54	€36.07	€10.48
12	€50.55	€44.11	€6.44
Annual	€324.97	€116.17	€208.80

Cumulative net cash flow and payback (EUR)

Year zero is known investment. Later years use reference cash flows and policy periods, not a future price forecast. Hover points for annual and cumulative values. Annual reduction: 0%。Unquoted costs are excluded.

≈ 6.5 years · Ten-year net: €776.66 · ROI 55.6%

Cash-flow data

Year	Annual net benefit	Cumulative net benefit
0	€-1,398.00	€-1,398.00
1	€208.80	€-1,189.20
2	€208.80	€-980.40
3	€208.80	€-771.60
4	€221.18	€-550.42
5	€221.18	€-329.24
6	€221.18	€-108.06
7	€221.18	€113.12
8	€221.18	€334.30
9	€221.18	€555.48
10	€221.18	€776.66

Reference candidate 2

Zendure SolarFlow 2400 AC+ & AB3000L | 2,4 kW - 5,28 kWh

Rated capacity reference: 5.28 kWh
Charge / discharge reference: 2.40 / 2.40 kW
Bundle price: €1,429 incl. VAT
Capacity reference fit: Nominal capacity meets lower reference
PV peak absorption: Partial absorption; surplus may be exported
Demand peak coverage: Power sufficient for modeled peak

Peak coverage compares power limits only; actual delivery also depends on stored energy and available charge space.

Reference choice 2 by ten-year net benefit.

2027+ · net metering ended · reference contract assumptions

Annual net savings

€210.56

Annual net energy savings: 906.5 kWh
PV self-consumption: 57.1%
PV share of household demand: 66.7%
Payback: ≈ 6.6 years
Ten-year net benefit: +€770.40

2027+ · €0.15/kWh export-fee assumption

Annual net savings: €385.68
Payback with fee: 3.68 years
Ten-year net with fee: +€2,522.72

View product

View this product's calculation

Simulated capacity / charge / discharge / round-trip efficiency：5.28 kWh ／ 2.40 ／ 2.40 kW ／ 85%。Rated-capacity references are not verified usable capacity.

Annual net savings
Bill without battery − bill with battery = bill savings
€324.97 − €114.41 ＝ €210.56。
Bill savings − included annual operating cost = net savings
€210.56 − €0.00 ＝ €210.56。
Annual net energy savings
Grid purchases without − with battery
1,960.3 − 1,053.8 ＝ 906.5 kWh。Grid charging is included; a negative value means buying more electricity. Household use does not decrease.
Effective PV self-consumption
(Direct PV use + PV-origin battery delivery) / PV generation ＝ 57.1%。
PV / grid-origin battery delivery：978.4／407.6 kWh；conversion loss 244.6 kWh。Grid energy and losses are excluded from effective PV use.
Payback
Start at the negative initial investment and accumulate each year's net cash flow. Payback is the first crossing of zero, interpolated within that year.
≈ 6.6 years。
Ten-year net benefit
Sum of ten annual net cash flows − initial investment
€2,199.40 − €1,429.00 ＝ +€770.40。The projection uses the model's policy changes and entered savings reduction; it is not ten times the first-year figure.

Unknown costs are not included; incomplete contract figures are partial estimates, with unconfirmed payback.

Matching evidence, bills and charts

Usable capacity is unverified; rated capacity is only a simulation reference ceiling and does not establish a fully eligible product.
Power uses the configuration maximum-continuous hardware reference; higher-power commissioning, circuit, metering and Dutch connection conditions require confirmation.
Rated capacity reference ceiling 5.28 kWh vs household target 4.50 kWh: 0.78 kWh above.
Continuous power 2.4 kW vs household target 0.5 kW: 1.9 kW above.
All computed models and expansions compete within their brand; retain the best ten-year net configuration per brand, then compare brands.

Hardware charge / discharge limits：2.40 ／ 2.40 kW

Maximum continuous hardware reference assumes the required circuit, professional installation and app settings. Installation permission and costs remain unverified.
2.4 kW is the continuous bidirectional AC reference. Temperature/SOC derating and some specification details remain unverified.

Specification source1 Specification source2

How much can you save per year after installing a battery?

Annual reference bill: no battery vs this configuration

Annual net bill without battery

€325/yr

With this reference configuration

€114/yr

Difference (annual savings)

€211/yr

PV returned to the grid

Without / with battery: 2,459.0 ／ 1,307.9 kWh/year

Net export income without / with: +€162.71 ／ +€84.16

Negative net export means export fees exceed gross compensation. Gross compensation protection does not cancel export fees. Unknown fees make this a partial ledger.

Bill breakdown for this reference configuration (85%)

Bill component	No battery	With battery	Difference
Grid import cost	€223.46	€67.57	+€155.89
Energy tax and VAT	€264.22	€131.00	+€133.22
Raw gross export compensation	€152.49	€78.05	+€74.44
Monthly gross protection adjustment	€10.21	€6.11	+€4.10
Gross compensation after protection	€162.71	€84.16	+€78.55
Known feed-in costs	€0.00	€0.00	€0.00
Net export income = gross minus export fees	€162.71	€84.16	+€78.55
Other known variable fees	€0.00	€0.00	€0.00
Net annual bill	€324.97	€114.41	+€210.56

Solar control is unknown. Without curtailment, annual battery savings are €210.56; with confirmed curtailment applied to both cases, annual battery savings are €209.09. These compare different control conditions; unknown contract terms still require verification.

Known upfront investment: €1,429
Annual net benefit after operating costs: €210.56/yr
Simple payback: ≈ 6.6 years
10-year reference cumulative net benefit: €770
10-year reference ROI: 53.9%

Annual savings = bill without battery − bill with battery under the SAME scenario; both use identical household inputs, prices, efficiency, operating strategy and annual SOC rule.

Dynamic contracts keep the PV-only vs optimised-charging distinction: the optimised dispatch is only shown when it genuinely beats the PV-only bill under the known fee inputs.

Start / end SOC: 0.00 → 0.00 kWh

The first-year result starting from an empty battery is shown only as a separate scenario and is never mixed into the steady-state annual figures.

Separate first-year-from-empty scenario savings: €210.56/yr

Cost breakdown：Hardware €1,429.00。Unquoted costs remain unknown.

Monthly bill savings (EUR)

Same hourly dispatch grouped by Amsterdam month. Bar labels show savings; hover for savings and bills.

Monthly data and reconciliation

Month	Without battery	With battery	Difference
1	€58.00	€42.78	€15.22
2	€37.61	€23.18	€14.44
3	€27.78	€8.48	€19.30
4	€15.46	€-8.90	€24.36
5	€8.40	€-11.58	€19.98
6	€-0.50	€-18.35	€17.85
7	€11.37	€-8.74	€20.11
8	€13.22	€-6.60	€19.82
9	€16.59	€-7.41	€24.00
10	€39.95	€21.67	€18.28
11	€46.54	€35.89	€10.66
12	€50.55	€44.01	€6.54
Annual	€324.97	€114.41	€210.56

Cumulative net cash flow and payback (EUR)

≈ 6.6 years · Ten-year net: €770.40 · ROI 53.9%

Cash-flow data

Year	Annual net benefit	Cumulative net benefit
0	€-1,429.00	€-1,429.00
1	€210.56	€-1,218.44
2	€210.56	€-1,007.88
3	€210.56	€-797.32
4	€223.96	€-573.36
5	€223.96	€-349.40
6	€223.96	€-125.44
7	€223.96	€98.52
8	€223.96	€322.48
9	€223.96	€546.44
10	€223.96	€770.40

Reference candidate 3

Lunergy Hub 2400 AC + BP5200 | 2,4 kW - 5,22 kWh

Rated capacity reference: 5.22 kWh
Charge / discharge reference: 2.40 / 2.40 kW
Bundle price: €1,499 incl. VAT
Capacity reference fit: Nominal capacity meets lower reference
PV peak absorption: Partial absorption; surplus may be exported
Demand peak coverage: Power sufficient for modeled peak

Peak coverage compares power limits only; actual delivery also depends on stored energy and available charge space.

Reference choice 3 by ten-year net benefit.

2027+ · net metering ended · reference contract assumptions

Annual net savings

€209.96

Annual net energy savings: 904.8 kWh
PV self-consumption: 57.0%
PV share of household demand: 66.6%
Payback: ≈ 6.9 years
Ten-year net benefit: +€693.77

2027+ · €0.15/kWh export-fee assumption

Annual net savings: €384.68
Payback with fee: 3.87 years
Ten-year net with fee: +€2,440.55

View product

View this product's calculation

Simulated capacity / charge / discharge / round-trip efficiency：5.22 kWh ／ 2.40 ／ 2.40 kW ／ 85%。Rated-capacity references are not verified usable capacity.

Annual net savings
Bill without battery − bill with battery = bill savings
€324.97 − €115.01 ＝ €209.96。
Bill savings − included annual operating cost = net savings
€209.96 − €0.00 ＝ €209.96。
Annual net energy savings
Grid purchases without − with battery
1,960.3 − 1,055.5 ＝ 904.8 kWh。Grid charging is included; a negative value means buying more electricity. Household use does not decrease.
Effective PV self-consumption
(Direct PV use + PV-origin battery delivery) / PV generation ＝ 57.0%。
PV / grid-origin battery delivery：976.3／405.7 kWh；conversion loss 243.9 kWh。Grid energy and losses are excluded from effective PV use.
Payback
Start at the negative initial investment and accumulate each year's net cash flow. Payback is the first crossing of zero, interpolated within that year.
≈ 6.9 years。
Ten-year net benefit
Sum of ten annual net cash flows − initial investment
€2,192.77 − €1,499.00 ＝ +€693.77。The projection uses the model's policy changes and entered savings reduction; it is not ten times the first-year figure.

Unknown costs are not included; incomplete contract figures are partial estimates, with unconfirmed payback.

Matching evidence, bills and charts

Usable capacity is unverified; rated capacity is only a simulation reference ceiling and does not establish a fully eligible product.
Power uses the configuration maximum-continuous hardware reference; higher-power commissioning, circuit, metering and Dutch connection conditions require confirmation.
Rated capacity reference ceiling 5.22 kWh vs household target 4.50 kWh: 0.72 kWh above.
Continuous power 2.4 kW vs household target 0.5 kW: 1.9 kW above.
All computed models and expansions compete within their brand; retain the best ten-year net configuration per brand, then compare brands.

Hardware charge / discharge limits：2.40 ／ 2.40 kW

Maximum continuous hardware reference assumes the required circuit, professional installation and app settings. Installation permission and costs remain unverified.

Specification source1

How much can you save per year after installing a battery?

Annual reference bill: no battery vs this configuration

Annual net bill without battery

€325/yr

With this reference configuration

€115/yr

Difference (annual savings)

€210/yr

PV returned to the grid

Without / with battery: 2,459.0 ／ 1,310.4 kWh/year

Net export income without / with: +€162.71 ／ +€84.31

Negative net export means export fees exceed gross compensation. Gross compensation protection does not cancel export fees. Unknown fees make this a partial ledger.

Bill breakdown for this reference configuration (85%)

Bill component	No battery	With battery	Difference
Grid import cost	€223.46	€68.02	+€155.44
Energy tax and VAT	€264.22	€131.29	+€132.93
Raw gross export compensation	€152.49	€78.21	+€74.28
Monthly gross protection adjustment	€10.21	€6.10	+€4.11
Gross compensation after protection	€162.71	€84.31	+€78.40
Known feed-in costs	€0.00	€0.00	€0.00
Net export income = gross minus export fees	€162.71	€84.31	+€78.40
Other known variable fees	€0.00	€0.00	€0.00
Net annual bill	€324.97	€115.01	+€209.96

Solar control is unknown. Without curtailment, annual battery savings are €209.96; with confirmed curtailment applied to both cases, annual battery savings are €208.53. These compare different control conditions; unknown contract terms still require verification.

Known upfront investment: €1,499
Annual net benefit after operating costs: €209.96/yr
Simple payback: ≈ 6.9 years
10-year reference cumulative net benefit: €694
10-year reference ROI: 46.3%

Annual savings = bill without battery − bill with battery under the SAME scenario; both use identical household inputs, prices, efficiency, operating strategy and annual SOC rule.

Dynamic contracts keep the PV-only vs optimised-charging distinction: the optimised dispatch is only shown when it genuinely beats the PV-only bill under the known fee inputs.

Start / end SOC: 0.00 → 0.00 kWh

The first-year result starting from an empty battery is shown only as a separate scenario and is never mixed into the steady-state annual figures.

Separate first-year-from-empty scenario savings: €209.96/yr

Cost breakdown：Hardware €1,499.00。Unquoted costs remain unknown.

Monthly bill savings (EUR)

Same hourly dispatch grouped by Amsterdam month. Bar labels show savings; hover for savings and bills.

Monthly data and reconciliation

Month	Without battery	With battery	Difference
1	€58.00	€42.87	€15.13
2	€37.61	€23.24	€14.37
3	€27.78	€8.56	€19.21
4	€15.46	€-8.81	€24.27
5	€8.40	€-11.57	€19.97
6	€-0.50	€-18.32	€17.82
7	€11.37	€-8.72	€20.09
8	€13.22	€-6.60	€19.81
9	€16.59	€-7.36	€23.96
10	€39.95	€21.74	€18.21
11	€46.54	€35.93	€10.61
12	€50.55	€44.04	€6.52
Annual	€324.97	€115.01	€209.96

Cumulative net cash flow and payback (EUR)

≈ 6.9 years · Ten-year net: €693.77 · ROI 46.3%

Cash-flow data

Year	Annual net benefit	Cumulative net benefit
0	€-1,499.00	€-1,499.00
1	€209.96	€-1,289.04
2	€209.96	€-1,079.08
3	€209.96	€-869.12
4	€223.27	€-645.85
5	€223.27	€-422.58
6	€223.27	€-199.31
7	€223.27	€23.96
8	€223.27	€247.23
9	€223.27	€470.50
10	€223.27	€693.77

More products meeting the capacity reference

The three main cards are a display limit, not a complete shortlist. The following models were calculated and keep their actual ranks; nominal capacity and power do not alone determine financial ranking.

Rank / configuration	Capacity / charge / discharge	Price	Contract scenario annual net	Contract scenario ten-year net	€0.15 scenario annual / ten-year
Rank 4 · STREAM AC 5000 5kWh	5.02 kWh／2.50／2.50 kW	€1,499	€208.63	+€673.75	€381.32／+€2,403.17
Rank 5 · Anker SOLIX Solarbank 4 E5000 Pro \| 2,5 kW - 5 kWh	5.02 kWh／2.50／2.50 kW	€1,799	€208.63	+€373.75	€381.32／+€2,103.17

No-purchase baseline: €0 investment and €0 savings. Effective PV self-consumption counts direct PV use and PV-origin battery delivery, excluding losses and grid charging.

Reference candidate 1：annual export 1,320.6 kWh；net export income +€85.42。Negative means paying export fees exceeding compensation.

A positive return in this scenario still requires confirmed contract terms, usable capacity and installation costs.

View calculation details

Inputs and calculation boundary

People: 3; annual household electricity: 2950 kWh. EV / heat-pump use included in the total: Not included / no such device / Not included / no such device.

Consumption basis: Household total energy use; record period: 12 months. Existing battery: Not specified. Shorter records are annualized as a reference estimate, not a full measured year.

Export-fee inputs (all-in, without adding VAT again): {"model":"NONE"}. Annual fixed/banded fees are spread across monthly charts; annual export volume determines the band. Basis: Editable reference assumptions.

Goal: Prioritize ten-year net benefit. Contract: Dynamic. Policy start year: 2027.

Solar: 3.5 kWp; modeled annual generation: 3,448.7 kWh. Historical/model weather, prices and load are references. The 2026 tax rates are reference inputs, not confirmed 2027 rates.

Annual household electricity breakdown (kWh): base 2,950, EV 0, heat pump 0. Device inclusion follows the supplied total-consumption markers.

Import markup: 0; export adjustment: 0; export-fee model: No fees. 2027–2029 monthly minimum gross compensation: 0.05 / 0.05 / 0.05 / 0.05 / 0.05 / 0.05 / 0.05 / 0.05 / 0.05 / 0.05 / 0.05 / 0.05. Reference assumption: minimum gross compensation of €0.05/kWh in 2027–2029. Not a historical supplier contract, quotation or statutory minimum rate.

Installation / electrical work / shipping / annual operating costs (EUR): Unknown / Unknown / Unknown / Unknown. Zero is an explicitly entered zero-cost scenario; unknown costs are excluded.

Connection power limit: Unknown kW. If unspecified, product maximum continuous power is a scenario requiring installation verification. Solar export control: Unknown. Unknown control is simulated as unavailable; confirmed control must also apply to the no-battery comparison.

The ten-year projection repeats reference weather, load and contract prices with the entered annual reduction. The 2027–2029 minimum gross compensation is not continued from 2030. This is not a future-price forecast. Battery energy is not exported for trading. Dynamic/dual-rate dispatch uses a 48-hour ideal forecast and executes 24 hours at a time; banded fees use observed exports and the current window, without claiming a full-year global optimum.

Policy sources: Dutch law ending net metering; ACM consumer guidance. Net export income can be negative; fees depend on the contract.

Historical market prices: Energy-Charts / SMARD, CC BY 4.0.

Export ledger and fee calculation

Fee = exported kWh × €0.15; net export = gross compensation − fee. Battery savings compare against the same fee-adjusted no-battery baseline.

Configuration	Export kWh	Gross	Fee	Net export
Jackery SolarVault 3 Pro Max AC + BP2500 \| 2,5 kW - 5,04 kWh	1,305.3	€84.59	€195.80	−€111.21
Zendure SolarFlow 2400 AC+ & AB3000L \| 2,4 kW - 5,28 kWh	1,293.0	€83.73	€193.95	−€110.22
Lunergy Hub 2400 AC + BP5200 \| 2,4 kW - 5,22 kWh	1,295.8	€83.90	€194.36	−€110.47

No battery: export / gross / fee / net：2,459.0 kWh／€162.71／€368.85／−€206.14。

Fixed example household & result provenance

Household: Family A — Solar Panels & Dynamic Tariff
Preset input hash: i92iar
Preset model version: 2026-10-12-v14-dynamic-reference

The fixed example and questionnaire share the same version-validated result.

All evaluated purchase configurations

Each price configuration was simulated before choosing one configuration per base model. Larger expansions were included. Unknown usable capacity remains a reference ceiling. 54 configurations evaluated.

View configurations, including 7.5 kWh and larger

Configuration	kWh	Charge / discharge kW	Price	Annual savings	Ten-year net	Annual export kWh	Net export EUR
STREAM Ultra 1.92kWh	1.92	1.05 / 0.80	€749	€113.75	€435	1,874.8	€123.21
Zendure SolarFlow 2400 AC+ \| 2,4 kW - 2,4 kWh	2.40	2.40 / 2.40	€819	€137.23	€608	1,752.7	€115.62
Zendure SolarFlow 2400 Pro \| 2,4 kW - 2,4 kWh	2.40	2.40 / 2.40	€969	€137.23	€458	1,752.7	€115.62
Jackery SolarVault 3 Pro Max AC \| 2,5 kW - 2,52 kWh	2.52	1.80 / 2.50	€789	€141.50	€684	1,719.0	€113.16
Jackery SolarVault 3 Pro Max \| 2,5 kW - 2,52 kWh	2.52	1.80 / 2.50	€1,089	€141.50	€384	1,719.0	€113.16
Jackery SolarVault 3 Pro \| 1,2 kW - 2,52 kWh	2.52	1.20 / 1.20	€729	€140.52	€731	1,718.3	€112.88
Anker SOLIX Solarbank 3 E2700 Pro \| 1,2 kW - 2,7 kWh	2.69	1.20 / 1.20	€999	€147.30	€530	1,676.2	€110.02
STREAM AC 5000 5kWh	5.02	2.50 / 2.50	€1,499	€208.63	€674	1,321.4	€85.48
Anker SOLIX Solarbank 4 E5000 Pro \| 2,5 kW - 5 kWh	5.02	2.50 / 2.50	€1,799	€208.63	€374	1,321.4	€85.48
Jackery SolarVault 3 Pro Max AC + BP2500 \| 2,5 kW - 5,04 kWh	5.04	2.50 / 2.50	€1,398	€208.80	€777	1,320.6	€85.42
Jackery SolarVault 3 Pro + BP2500 \| 1,2 kW - 5,04 kWh	5.04	1.20 / 1.20	€1,338	€202.27	€760	1,325.0	€84.13
Jackery SolarVault 3 Pro Max + BP2500 \| 2,5 kW - 5,04 kWh	5.04	2.50 / 2.50	€1,698	€208.80	€477	1,320.6	€85.42
Lunergy Hub 2400 AC + BP5200 \| 2,4 kW - 5,22 kWh	5.22	2.40 / 2.40	€1,499	€209.96	€694	1,310.4	€84.31
Zendure SolarFlow 2400 AC+ & AB3000L \| 2,4 kW - 5,28 kWh	5.28	2.40 / 2.40	€1,429	€210.56	€770	1,307.9	€84.16
Zendure SolarFlow 2400 Pro + AB3000L \| 2,4 kW - 5,28 kWh	5.28	2.40 / 2.40	€1,638	€210.56	€561	1,307.9	€84.16
Anker SOLIX Solarbank 3 E2700 Pro \| 1,2 kW - 5,4 kWh	5.38	1.20 / 1.20	€1,898	€204.96	€231	1,311.1	€83.03
Anker Solix Solarbank 3 E2700 Pro \| 2,4 kW - 5,4 kWh	5.38	2.40 / 2.40	€2,198	€211.51	€13	1,304.0	€83.94
Anker SOLIX Solarbank Max AC \| 3,5 kW - 7 kWh	7.00	3.50 / 3.50	€1,999	€227.04	€360	1,273.0	€84.19
Jackery SolarVault 3 Pro Max AC + 2x BP2500 \| 2,5 kW - 7,56 kWh	7.56	2.50 / 2.50	€2,007	€225.94	€359	1,254.8	€81.91
Jackery SolarVault 3 Pro Max + 2x BP2500 \| 2,5 kW - 7,56 kWh	7.56	2.50 / 2.50	€2,307	€225.94	€59	1,254.8	€81.91
Jackery SolarVault 3 Pro + 2x BP2500 \| 1,2 kW - 7,56 kWh	7.56	1.20 / 1.20	€1,947	€214.17	€282	1,269.9	€79.88
Anker Solix Solarbank 3 E2700 Pro \| 3,6 kW - 8,1 kWh	8.06	3.60 / 3.60	€3,397	€231.55	€-993	1,263.6	€83.86
Anker SOLIX Solarbank 3 E2700 Pro \| 1,2 kW - 8,1 kWh	8.06	1.20 / 1.20	€2,797	€215.01	€-559	1,268.4	€79.79
Zendure SolarFlow 2400 AC+ & 2x AB3000L \| 2,4 kW - 8,16 kWh	8.16	2.40 / 2.40	€2,088	€227.23	€294	1,250.4	€81.49
Zendure SolarFlow 2400 Pro + 2x AB3000L \| 2,4 kW - 8,16 kWh	8.16	2.40 / 2.40	€2,307	€227.23	€75	1,250.4	€81.49
Anker SOLIX Solarbank 4 E5000 Pro + BP5000 Expansion Battery	10.05	2.50 / 2.50	€3,148	€232.07	€-725	1,249.8	€82.62
Jackery SolarVault 3 Pro Max AC + 3x BP2500 \| 2,5 kW - 10,08 kWh	10.08	2.50 / 2.50	€2,616	€232.12	€-193	1,249.8	€82.62
Jackery SolarVault 3 Pro Max + 3x BP2500 \| 2,5 kW - 10,08 kWh	10.08	2.50 / 2.50	€2,916	€232.12	€-493	1,249.8	€82.62
Jackery SolarVault 3 Pro + 3x BP2500 \| 1,2 kW - 10,08 kWh	10.08	1.20 / 1.20	€2,556	€216.92	€-299	1,267.5	€79.71
Lunergy Hub 2400 AC + 2x BP5200 \| 2,4 kW - 10,44 kWh	10.44	2.40 / 2.40	€2,499	€231.55	€-76	1,250.0	€81.98
Anker Solix Solarbank 3 E2700 Pro \| 2,4 kW - 10,8 kWh	10.75	2.40 / 2.40	€3,996	€231.93	€-1,569	1,250.0	€81.98
Anker SOLIX Solarbank 3 E2700 Pro \| 1,2 kW - 10,8 kWh	10.75	1.20 / 1.20	€3,696	€217.27	€-1,435	1,267.5	€79.71
Zendure SolarFlow 2400 AC+ & 3x AB3000L \| 2,4 kW - 11,04 kWh	11.04	2.40 / 2.40	€2,747	€232.28	€-317	1,250.0	€81.98
Zendure SolarFlow 2400 Pro + 3x AB3000L \| 2,4 kW - 11,04 kWh	11.04	2.40 / 2.40	€2,976	€232.28	€-546	1,250.0	€81.98
Jackery SolarVault 3 Pro Max + 4x BP2500 \| 2,5 kW - 12,60 kWh	12.60	2.50 / 2.50	€3,525	€234.20	€-1,078	1,250.0	€82.30
Jackery SolarVault 3 Pro + 4x BP2500 \| 1,2 kW - 12,60 kWh	12.60	1.20 / 1.20	€3,165	€217.87	€-898	1,267.5	€79.71
Jackery SolarVault 3 Pro Max AC + 4x BP2500 \| 2,5 kW - 12,60 kWh	12.60	2.50 / 2.50	€3,225	€234.20	€-778	1,250.0	€82.30
Anker SOLIX Solarbank 3 E2700 Pro \| 1,2 kW - 13,5 kWh	13.44	1.20 / 1.20	€4,595	€217.95	€-2,327	1,267.5	€79.71
Zendure SolarFlow 2400 AC+ & 4x AB3000L \| 2,4 kW - 13,92 kWh	13.92	2.40 / 2.40	€3,406	€233.86	€-960	1,250.0	€81.94
Zendure SolarFlow 2400 Pro + 4x AB3000L \| 2,4 kW - 13,92 kWh	13.92	2.40 / 2.40	€3,645	€233.86	€-1,199	1,250.0	€81.94
Anker SOLIX Solarbank Max AC + BP7000 \| 3,5 kW - 14 kWh	14.00	3.50 / 3.50	€3,698	€239.10	€-1,217	1,262.2	€84.13
2 x Anker SOLIX Solarbank Max AC \| 7 kW - 14 kWh	14.00	7.00 / 7.00	€3,899	€241.12	€-1,400	1,279.0	€83.94
Jackery SolarVault 3 Pro Max + 5x BP2500 \| 2,5 kW - 15,12 kWh	15.12	2.50 / 2.50	€4,134	€234.89	€-1,680	1,250.2	€82.30
Jackery SolarVault 3 Pro + 5x BP2500 \| 1,2 kW - 15,12 kWh	15.12	1.20 / 1.20	€3,774	€217.97	€-1,506	1,267.5	€79.71
Jackery SolarVault 3 Pro Max AC + 5x BP2500 \| 2,5 kW - 15,12 kWh	15.12	2.50 / 2.50	€3,834	€234.89	€-1,380	1,250.2	€82.30
Lunergy Hub 2400 AC + 3× BP5200 \| 2,4 kW – 15,66 kWh	15.66	2.40 / 2.40	€3,399	€234.06	€-951	1,250.0	€81.98
Anker Solix Solarbank 3 E2700 Pro \| 3,6 kW - 16,2 kWh	16.13	3.60 / 3.60	€6,094	€239.95	€-3,606	1,263.8	€84.31
Anker SOLIX Solarbank 3 E2700 Pro \| 1,2 kW - 16,2 kWh	16.13	1.20 / 1.20	€5,494	€217.97	€-3,226	1,267.5	€79.71
Zendure SolarFlow 2400 AC+ & 5x AB3000L \| 2,4 kW - 16,8 kWh	16.80	2.40 / 2.40	€4,065	€234.09	€-1,617	1,250.0	€82.00
Zendure SolarFlow 2400 Pro + 5x AB3000L \| 2,4 kW - 16,8 kWh	16.80	2.40 / 2.40	€4,314	€234.09	€-1,866	1,250.0	€82.00
Anker SOLIX Solarbank Max AC + 2x BP7000 \| 3,5 kW - 21 kWh	21.00	3.50 / 3.50	€5,397	€239.63	€-2,910	1,263.1	€84.21
Anker SOLIX Solarbank Max AC + 3x BP7000 \| 3,5 kW - 28 kWh	28.00	3.50 / 3.50	€7,096	€239.63	€-4,609	1,263.1	€84.20
Anker SOLIX Solarbank Max AC + 4x BP7000 \| 3,5 kW - 35 kWh	35.00	3.50 / 3.50	€8,795	€239.63	€-6,308	1,263.1	€84.20
Anker SOLIX Solarbank Max AC + 5x BP7000 \| 3,5 kW - 42 kWh	42.00	3.50 / 3.50	€10,494	€239.63	€-8,007	1,263.1	€84.20

Is a bigger battery worth it?

Expansion comparisons use the same household, 85% efficiency and dispatch. Positive extra net benefit favours expansion; a power change means the benefit is not capacity-only. These remain rated-capacity reference configurations.

Show all expansion comparisons

Model	Capacity change	Added hardware cost	Additional annual savings	Additional ten-year net
Zendure SolarFlow 2400 AC+	2.4 → 5.28 kWh	€610.00	€73.33	€162.01
Zendure SolarFlow 2400 AC+	5.28 → 8.16 kWh	€659.00	€16.67	€-476.41
Zendure SolarFlow 2400 AC+	8.16 → 11.04 kWh	€659.00	€5.05	€-610.67
Zendure SolarFlow 2400 AC+	11.04 → 13.92 kWh	€659.00	€1.58	€-642.92
Zendure SolarFlow 2400 AC+	13.92 → 16.8 kWh	€659.00	€0.23	€-657.12
Zendure SolarFlow 2400 Pro	2.4 → 5.28 kWh	€669.00	€73.33	€103.01
Zendure SolarFlow 2400 Pro	5.28 → 8.16 kWh	€669.00	€16.67	€-486.41
Zendure SolarFlow 2400 Pro	8.16 → 11.04 kWh	€669.00	€5.05	€-620.67
Zendure SolarFlow 2400 Pro	11.04 → 13.92 kWh	€669.00	€1.58	€-652.92
Zendure SolarFlow 2400 Pro	13.92 → 16.8 kWh	€669.00	€0.23	€-667.12
Jackery SolarVault 3 Pro Max AC (includes power change)	2.52 → 5.04 kWh	€609.00	€67.30	€92.84
Jackery SolarVault 3 Pro Max AC	5.04 → 7.56 kWh	€609.00	€17.14	€-418.00
Jackery SolarVault 3 Pro Max AC	7.56 → 10.08 kWh	€609.00	€6.18	€-551.19
Jackery SolarVault 3 Pro Max AC	10.08 → 12.6 kWh	€609.00	€2.08	€-585.75
Jackery SolarVault 3 Pro Max AC	12.6 → 15.12 kWh	€609.00	€0.69	€-601.89
Jackery SolarVault 3 Pro Max (includes power change)	2.52 → 5.04 kWh	€609.00	€67.30	€92.84
Jackery SolarVault 3 Pro Max	5.04 → 7.56 kWh	€609.00	€17.14	€-418.00
Jackery SolarVault 3 Pro Max	7.56 → 10.08 kWh	€609.00	€6.18	€-551.19
Jackery SolarVault 3 Pro Max	10.08 → 12.6 kWh	€609.00	€2.08	€-585.75
Jackery SolarVault 3 Pro Max	12.6 → 15.12 kWh	€609.00	€0.69	€-601.89
Jackery SolarVault 3 Pro	2.52 → 5.04 kWh	€609.00	€61.75	€29.22
Jackery SolarVault 3 Pro	5.04 → 7.56 kWh	€609.00	€11.90	€-477.96
Jackery SolarVault 3 Pro	7.56 → 10.08 kWh	€609.00	€2.75	€-581.01
Jackery SolarVault 3 Pro	10.08 → 12.6 kWh	€609.00	€0.95	€-599.57
Jackery SolarVault 3 Pro	12.6 → 15.12 kWh	€609.00	€0.10	€-607.93
Anker SOLIX Solarbank3 E2700 Pro	2.688 → 5.376 kWh	€899.00	€57.66	€-299.02
Anker SOLIX Solarbank3 E2700 Pro (includes power change)	5.376 → 8.064 kWh	€599.00	€3.50	€-572.05
Anker SOLIX Solarbank3 E2700 Pro (includes power change)	8.064 → 10.752 kWh	€299.00	€-14.28	€-442.15
Anker SOLIX Solarbank3 E2700 Pro (includes power change)	10.752 → 13.44 kWh	€599.00	€-13.98	€-758.05
Anker SOLIX Solarbank3 E2700 Pro	13.44 → 16.128 kWh	€899.00	€0.02	€-898.80
Anker SOLIX Solarbank4 E5000 Pro	5.024 → 10.048 kWh	€1,349.00	€23.44	€-1,098.71
Lunergy Hub 2400 AC	5.22 → 10.44 kWh	€1,000.00	€21.59	€-769.75
Lunergy Hub 2400 AC	10.44 → 15.66 kWh	€900.00	€2.51	€-874.90
Anker SOLIX Solarbank Max AC	7 → 14 kWh	€1,699.00	€12.06	€-1,577.14
Anker SOLIX Solarbank Max AC (includes power change)	14 → 21 kWh	€1,498.00	€-1.49	€-1,510.38
Anker SOLIX Solarbank Max AC	21 → 28 kWh	€1,699.00	€0.00	€-1,699.00
Anker SOLIX Solarbank Max AC	28 → 35 kWh	€1,699.00	€0.00	€-1,699.00
Anker SOLIX Solarbank Max AC	35 → 42 kWh	€1,699.00	€0.00	€-1,699.00

Data sources and remaining limitations

Location precision / source: postcode_area_reference · nl_pdok_locatieserver_v3_1_bag_postcode
Location quality flags: source_crs_ogc_crs84, postcode_centroid_only, house_number_missing, requires_03_precision_decision, offline_frozen_provider_fixture
PV generation source: pvgis_modeled
Household load source: user_supplied_household_consumption
Base load source: user_annual_consumption
Electricity price basis: 2023 historical hourly market prices (Energy-Charts / SMARD, CC BY 4.0, 316 negative-price hours), replayed under the supplied policy assumptions. Not a future-price forecast.

Additional model assumptions

Quick matching compares capacity/power/price only and runs no hourly simulation; all computable configurations enter the hourly back-calculation.
The household physical capacity curves already include 85% round-trip efficiency; capacity is not divided by efficiency again. Curve fit is diagnostic, not a purchase-ranking threshold.
SKU back-calculation uses verified usable capacity where known, otherwise a labelled rated-capacity reference ceiling. All computable in-stock configurations are simulated before selecting the best per model.
Recorded single-phase connection; phase count alone does not determine allowed power. A supplied connection power limit constrains charging and discharging. Circuit, metering and cross-phase delivery require installation verification.
2023 historical hourly prices (Energy-Charts / SMARD, CC BY 4.0) replayed under 2027 policy assumptions.
DYNAMIC candidate back-calculation reuses the same three-scenario economic engine as the savings curve (POST_SALDERING_2027_PLUS + 2026 reference tax); the price series is loaded once per request and reused for every candidate.
85% is the conservative default round-trip efficiency and 90% the sensitivity scenario; efficiency enters only as charge/discharge conversion loss and is never deducted again from usable capacity.
The dynamic dispatch is only presented as the 'dynamic optimised' result when it genuinely beats the PV-only bill under the known fee inputs; if it does not beat PV-only, the candidate is presented as PV-only and the comparison is labelled honestly.
Candidate back-calculation only values household self-consumption; selling battery energy to the grid is an independent electricity trading strategy that is not implemented this round, so expected trading profit never enters any ROI.
Fit against the household curve reference remains a separate diagnostic. Reference objective ranking includes all computable configurations without a soft target-capacity/power tier.
No pair meets this curve-fit diagnostic. All configurations and same-model expansions are still evaluated separately.
Usable capacity or curve fit remains unconfirmed. All computable configurations still enter reference objective ranking, without implying verified installation or usable capacity.
Only provided supplier fees are included; omitted components remain explicit. A historical reference backtest does not guarantee future savings.
A dynamic contract does not automatically confer VAT deduction eligibility; battery trading capability, actual electricity trading, contract eligibility and tax identity remain pending verification, and the default purchase cost continues to use the actual VAT-inclusive price.

Complete product catalogue and source snapshot

16 models · 69 purchase configurations · 11 models with stock. Expansion batteries and larger capacities are grouped under the same model. Captured on 8 October 2026; availability may change. Usable capacity is unverified. Calculations use a labelled rated-capacity ceiling and maximum continuous hardware power; actual output requires confirmed installation. Hardware prices exclude unresolved accessory, installation and subscription costs.

Anker SOLIX Solarbank Max AC · 7 configurations · stock available

Purchase configuration	Rated capacity	Hardware price	Stock	Maximum continuous discharge
Anker SOLIX Solarbank Max AC \| 3,5 kW - 7 kWh	7 kWh	€1,999 incl. VAT	In stock Op voorraad	3.5 kW conditional
Anker SOLIX Solarbank Max AC + BP7000 \| 3,5 kW - 14 kWh	14 kWh	€3,698 incl. VAT	In stock Op voorraad	3.5 kW conditional
Anker SOLIX Solarbank Max AC + 2x BP7000 \| 3,5 kW - 21 kWh	21 kWh	€5,397 incl. VAT	In stock Op voorraad	3.5 kW conditional
Anker SOLIX Solarbank Max AC + 3x BP7000 \| 3,5 kW - 28 kWh	28 kWh	€7,096 incl. VAT	In stock Op voorraad	3.5 kW conditional
Anker SOLIX Solarbank Max AC + 4x BP7000 \| 3,5 kW - 35 kWh	35 kWh	€8,795 incl. VAT	In stock Op voorraad	3.5 kW conditional
Anker SOLIX Solarbank Max AC + 5x BP7000 \| 3,5 kW - 42 kWh	42 kWh	€10,494 incl. VAT	In stock Op voorraad	3.5 kW conditional
2 x Anker SOLIX Solarbank Max AC \| 7 kW - 14 kWh	14 kWh	€3,899 incl. VAT	In stock Op voorraad	7 kW conditional

Measured usable capacity: unverified. Purchase variants use exact advertised prices; model grouping does not imply interchangeable components. Manufacturer evidence: source

EcoFlow STREAM AC 5000 · 3 configurations · stock available

Purchase configuration	Rated capacity	Hardware price	Stock	Maximum continuous discharge
STREAM AC 5000 5kWh	5.024 kWh	€1,499 incl. VAT	In stock IN_STOCK	2.5 kW conditional
STREAM AC 5000 + EB5000 10kWh	10.048 kWh	€2,698 incl. VAT	Pre-order PREORDER; early November 2026	3 kW conditional
STREAM AC 5000 + 2 EB5000 15kWh	15.072 kWh	€4,597 incl. VAT	Pre-order PREORDER; early November 2026	3 kW conditional