Solar Savings Calculator
Estimate annual solar generation, bill savings and payback period from system size and sun hours.
Estimate how much a solar panel system could save you each year and how long it takes to pay for itself.
How to use it
- 1Enter the system size in kW and average sun hours per day.
- 2Enter your electricity price and any export rate.
- 3Enter the system cost to see the payback period.
System details
Enter your solar system size, usage and costs.
Result
Annual savings
€2,227.23
- Annual generation
- 9,855 kWh
- Payback period
- 4.0 years
- 25-year net savings
- €46,680.75
Estimates only — actual output depends on shading, orientation, panel efficiency and local weather.
Frequently asked questions
- What are 'sun hours'?
- Peak sun hours are the equivalent hours of full-intensity sunlight your location receives per day, typically 3–6.
- Does it include export/feed-in payments?
- Yes, enter an export rate for any electricity you sell back to the grid.
- Is this an exact quote?
- No, it's an estimate; actual output depends on shading, orientation and equipment efficiency.
Something wrong with this tool or its numbers?
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