Solar Self-Consumption Calculator
Compare PV self-consumption, autarky, grid import, and annual value with and without battery storage.
PV Inputs
Use your current measured or estimated self-consumption rate.
Set your target scenario to compare battery impact.
Self-Consumption Results
Additional annual value with battery
598,00 €
Maximum annual battery cost for positive delta: 598,00 €
Autarky gain
46.0 pp
Extra self-used energy
2300 kWh
Reduced grid import
2300 kWh
Autarky with battery
100.0%
Without vs with battery
| Metric | Without battery | With battery |
|---|---|---|
| Self-used energy | 2700 kWh | 5000 kWh |
| Grid import | 2300 kWh | 0 kWh |
| Exported energy | 6300 kWh | 4000 kWh |
| Autarky rate | 54.0% | 100.0% |
| Annual total value | 1.422,00 € | 2.020,00 € |
This tool compares energy value with and without battery using your own rates and self-consumption assumptions. For full battery investment economics, combine it with the Solar Battery Payback Calculator.
About This Calculator
This solar self-consumption calculator compares your PV energy flow without and with battery storage. Using your own production, consumption, self-consumption rates, and tariffs, it estimates self-use, grid import, exported energy, autarky, and annual value.
How to Use This Calculator
- 1
Enter annual PV production and annual household electricity consumption in kWh.
- 2
Set estimated self-consumption rate without battery and your target rate with battery.
- 3
Add electricity purchase price and feed-in tariff per kWh.
- 4
Compare self-use, grid import, autarky, and annual value between both scenarios.
Why Use This Calculator
Scenario Transparency
Compare no-battery and battery scenarios side by side with consistent assumptions and identical baseline data.
Autarky Visibility
See how higher self-consumption affects your dependence on grid electricity across the year.
Investment Pre-Check
Estimate the annual value increase to define whether a battery cost is economically plausible before deeper analysis.
Frequently Asked Questions
Self-consumption is the share of PV production used directly by your household. Autarky is the share of household demand covered by PV energy.
Use inverter data, energy monitoring, or your installer’s estimate. If uncertain, compare conservative and optimistic scenarios.
Self-used kWh replace grid purchases at your retail electricity price, which is often higher than feed-in tariff for exported energy.
No. This tool compares energy value only. Use the Solar Battery Payback Calculator to evaluate full battery investment economics.
Yes. You can still use it to benchmark current self-consumption and test hypothetical scenarios for future upgrades.
Update production, consumption, and tariffs whenever your system behavior or contract pricing changes.
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Disclaimer: This calculator provides estimates for planning purposes only. Actual costs may vary based on your circumstances, location, and market conditions. Not financial advice. See our Terms of Service for full disclaimers.