We can't find the internet
Attempting to reconnect
Tesla Megapack 2 XL, grid battery
One container of 3.85 MWh and 1.93 MW, buying on the French day-ahead market and selling there later in the day.
Round-trip efficiency 91.7 %, from Tesla's datasheet.
Year by year
| Year | PnL | Cycles |
|---|---|---|
| 2017 | €39,632 | 522 |
| 2018 | €42,924 | 533 |
| 2019 | €35,421 | 540 |
| 2020 | €34,566 | 513 |
| 2021 | €103,195 | 639 |
| 2022 | €234,674 | 680 |
| 2023 | €123,226 | 668 |
| 2024 | €118,788 | 702 |
| 2025 | €147,081 | 782 |
| 2026 to 18 Oct | €181,678 | 733 |
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.
- The past only: what the market may do next takes a price model, which an account shows on these same assets.