Solar Revenue Calculator Austria
Calculate the economics of your solar (PV) system: self-consumption savings, feed-in revenue, payback period and return over 20 years.
| Item | Amount |
|---|---|
| Investment (gross) | – |
| Subsidy | – |
| Investment after subsidy | – |
| PV yield (year 1) | – |
| Self-consumption savings (year 1) | – |
| Feed-in revenue (year 1) | – |
| Total return (year 1) | – |
| Profit after 20 years (nominal) | – |
| Net present value (NPV) after 20 years | – |
Investment vs. Return over 20 Years
Payback: cumulative cash flow
Year-by-year overview (Expert mode)
| Year | PV production | Savings + revenue | Cumulative |
|---|
Note: This calculator provides an estimate for initial orientation, not a binding economic assessment. Subsidy amounts, feed-in tariffs, electricity prices and system costs fluctuate and change frequently. Please check current figures before making an investment decision (EAG funding portal, OeMAG, your own utility, multiple installer quotes) and consider consulting an independent energy advisor. All figures without guarantee.
How is the economics of a PV system calculated?
Yield depends on system size (kWp) and regional solar irradiation. Production is split into the share consumed directly in the household (self-consumption) and the rest fed into the grid: self-consumption saves the full electricity price, while feed-in only earns the – much lower – feed-in tariff. A battery storage system significantly increases the self-consumption share and often shortens the payback period considerably.
Default assumptions used (as of 2026)
| Assumption | Default value |
|---|---|
| Annual PV yield | 950-1,080 kWh/kWp (by region) |
| Household electricity price | 23 ct/kWh (range 21-25 ct/kWh) |
| Feed-in tariff (OeMAG) | 6.5 ct/kWh (fluctuates monthly, 5-11 ct/kWh) |
| System cost | €950-1,700/kWp gross (depending on size) |
| EAG investment subsidy | €150/kWp (up to 10 kWp), €130/kWp (10-20 kWp) |
| Battery cost / subsidy | €600/kWh gross / €150/kWh subsidy (max. 50 kWh) |
| VAT | 20% (0% rate ended 31 March 2025) |
| Self-consumption rate | 30% without storage, 65% with storage |
Frequently asked questions
- Is a battery worth it?
- Financially, when the extra self-consumption covers the extra cost. Self-consumption saves the full electricity price, while feed-in only earns the much lower feed-in tariff – a factor of three to four. A battery typically lifts the self-consumption share from around 30% to 55–70%, but costs several thousand euros itself. The calculator shows both cases side by side.
- What is the difference between kWp and kWh?
- kWp (kilowatt peak) is the system's output under standard test conditions; kWh (kilowatt hour) is the energy actually produced. In Austria one kWp yields roughly 950 to 1,150 kWh a year depending on region, roof pitch and orientation.
- Are the subsidy amounts in the calculator binding?
- No. Subsidy levels, budgets and conditions change with each funding call, and regional and municipal schemes come and go on top. The values here are indicative – check the current funding portal before applying and enter the amount you realistically expect.
- How does module degradation affect the result?
- Modules lose roughly half a percent of their output each year. Over twenty years that adds up to about ten percent, and the calculator accounts for it in the year-by-year series. Manufacturers typically still guarantee 80 to 85% of output after 25 years.
- What does net present value tell you that payback time does not?
- Net present value discounts all future cash flows back to today. A positive figure means the system beats an alternative investment at the discount rate you set. Payback time ignores that interest effect and only tells you when the investment has returned in nominal terms.
Sources and further reading
- EAG-Förderabwicklungsstelle Investment grants and market premiums under the Renewables Expansion Act, including funding call dates.
- OeMAG The green electricity settlement agency: feed-in tariffs and the settlement of subsidised feed-in.
- E-Control The official electricity tariff calculator – the reference for the electricity price used here.
- PV Austria The industry association, with current price ranges for systems and batteries and a directory of installers.
- Klima- und Energiefonds Federal funding programmes for photovoltaics and storage.
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