Funding round
Lunar Energy Series D
Lunar Energy, which works in clean energy system manufacturing in Mountain View, raised $102M in a Series D round announced on 4 Feb 2026, led by B Capital and Prelude Ventures. 8 firms took part. It is Lunar Energy's third venture round on record; the one before was a Series C in Feb 2026.
$102M
Amount raised
Not disclosed
Post-money valuation
8
Investors
2 leads
Valuation
What this round says about the price
Lunar Energy did not disclose a valuation in this round. It is 19% of the $532M Lunar Energy has raised in the venture rounds on record. No later venture round is on record for Lunar Energy.
Investors
Who put money in
B Capital and Prelude Ventures led the round with 6 other firms.
Lead investors
- B Capital backs 156 venture-backed companies new investor
- backs 62 venture-backed companies new investor
Also in the round
- DCVC backs 171 venture-backed companies new investor
- backs 20 venture-backed companies new investor
- backs 8 venture-backed companies new investor
- Sunrun new investor
- ITOCHU Corporation new investor
- backs 3 venture-backed companies new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to product development, geographic expansion, scaling operations and working capital.
- Product development
- Geographic expansion
- Scaling operations
- Working capital
Comparable rounds
How it compares
The closest in time, other companies' Series D rounds in Batteries:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Batteries | 8 Dec 2025 | $81M | not disclosed | Amazon.com, Inc. |
| Batteries | 14 Jul 2026 | $97M | not disclosed | not named |
| Group14 Batteries | 20 Aug 2025 | $463M | not disclosed | SK, Inc. |
Sources
Where this comes from
Reported by 2 sources.
Questions
Frequently asked
How much did Lunar Energy raise in its Series D round?
Lunar Energy raised $102M in its Series D round, announced in Feb 2026.
Who led Lunar Energy's Series D round?
B Capital and Prelude Ventures led it, with DCVC, Piva Capital, Leitmotif, Sunrun and ITOCHU Corporation and 1 more.
What was Lunar Energy's valuation at the Series D round?
It was not disclosed.