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Solar plant and Megapack in Paris
1 MWp of panels in Paris with a Megapack charged from them: what it does not store is sold at the quarter-hour's price.
1 MWp at 48.86° N, 2.35° 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 | €50,447 | 72 | 1,089 | €46.34 |
| 2018 | €66,926 | 85 | 1,177 | €56.85 |
| 2019 | €50,035 | 91 | 1,183 | €42.28 |
| 2020 | €42,312 | 92 | 1,209 | €35.01 |
| 2021 | €122,634 | 111 | 1,150 | €106.65 |
| 2022 | €407,538 | 129 | 1,239 | €328.83 |
| 2023 | €121,752 | 122 | 1,138 | €106.99 |
| 2024 | €60,049 | 60 | 1,131 | €53.09 |
| 2025 | €59,915 | 60 | 1,128 | €53.10 |
| 2026 to 18 Oct | €78,112 | 60 | 1,003 | €77.91 |
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 -6.6% to +3.5% 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.