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Solar plant and Megapack in Marseille
1 MWp of panels in Marseille with a Megapack charged from them: what it does not store is sold at the quarter-hour's price.
1 MWp at 43.30° N, 5.37° E, optimal inclination, 14 % of losses (PVGIS); one Megapack 2 XL (3.85 MWh, 1.93 MW, round-trip efficiency 91.7 %), charged from the panels only.
Year by year
| Year | PnL | Cycles | PV output (MWh) | Per MWh produced |
|---|---|---|---|---|
| 2017 | €81,009 | 123 | 1,634 | €49.57 |
| 2018 | €88,527 | 114 | 1,559 | €56.77 |
| 2019 | €73,800 | 138 | 1,666 | €44.29 |
| 2020 | €58,796 | 130 | 1,592 | €36.94 |
| 2021 | €186,393 | 172 | 1,607 | €116.02 |
| 2022 | €531,259 | 187 | 1,634 | €325.11 |
| 2023 | €187,681 | 209 | 1,665 | €112.69 |
| 2024 | €113,740 | 205 | 1,617 | €70.34 |
| 2025 | €123,665 | 206 | 1,613 | €76.65 |
| 2026 to 18 Oct | €152,518 | 187 | 1,384 | €110.21 |
A cycle is the battery's capacity charged once.
Month by month
Click a bar to see that month's days.
Simulate further with a free account
The next five years on our calibrated price model, in a low, a base and a high scenario: the median and the conservative figure of each year, and the NPV and IRR on your own size and capex.
Indicative figures only
They come from simplified models: past prices, an asset as its datasheet describes it, and a battery that knows the next day's prices when it plans a day. Before any fee, tax, grid tariff or wear of the battery. They are neither a forecast, an offer nor investment advice.
Tesla, Powerwall and Megapack are trademarks of Tesla, Inc. Rigular is not affiliated with Tesla; the specifications are those of its public datasheets.
How it is computed
- Prices: the day-ahead auction of the French bidding zone, published by ENTSO-E, hourly until 30 September 2025 and by the quarter-hour since. The figures run to yesterday and are updated every morning.
- Battery: dispatched exactly on each day knowing the next, from an empty battery on 1 January 2017, the energy left at midnight carried to the next day, and a cycle only when it clears 5 € per MWh discharged.
- Solar: 1 MWp of panels at the best inclination, 14 % of losses, hour by hour from PVGIS (European Commission), each quarter-hour's output sold at its price.
- PVGIS has no weather year after 2023: from 2024 on, the output is the site's average year over 2005–2023. Over 2017–2023, the average year's revenue here was -4.4% to +3.9% relative to the real year's.
- The past only: what the market may do next takes a price model, which an account shows on these same assets.