Storage startups raise fresh capital: Peak Energy $108m, Optivolt $32m
· Climate · United States
Two energy storage startups announced new funding rounds. Peak Energy closed a $108 million Series B to accelerate manufacturing and expand deployment of its sodium-ion energy storage systems, a chemistry positioned as an alternative to lithium-ion for grid-scale storage. Separately, Optivolt raised $32 million in a Series A led by VXI Capital, with backing from figures including founding Enphase CEO Paul Nahi, former SunPower CEO Tom Werner and former New York energy official Richard Kauffman; the company describes its technology as energy intelligence that turns passive solar hardware into adaptive power systems. The rounds show investors continuing to fund alternatives to lithium-ion batteries and hardware that improves solar output, even as the sector faces pressure on costs and scale-up.
Why it matters：Funding for sodium-ion storage and solar power electronics shows where investors expect the next cost cuts in clean energy hardware to come from.
Key points
- Peak Energy's $108m Series B targets sodium-ion manufacturing and deployment
- Optivolt's $32m Series A was led by VXI Capital
- Optivolt backers include former Enphase and SunPower CEOs
Sources (original reporting)
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