Startup profile · funding coverage
Exowatt
Modular thermal energy storage for AI data-center power needs.
Stage
series a
Status
private
Coverage
full
Why Exowatt is interesting
Exowatt targets 24/7 renewable power for data centers — Thrive joined a16z in a $70M Series A as AI energy demand surges (2025).
Key facts
- Series A (Apr 2025): $70M with Felicis lead; a16z (/fund/andreessen-horowitz) and Thrive Capital (/fund/thrive-capital) in equity tranche (company press)
- Seed (Apr 2024): $20M from a16z, Atomic, Sam Altman (Businesswire)
- Product: modular thermal energy storage (P3) for AI data-center power
Investors in our directory
Funds linked from Exowatt's profile — open a fund page for stage focus and related deal articles.
Industries
Climate Tech Deep Tech
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FAQs about Exowatt
Funding context and why this company shows up in venture coverage.
Exowatt builds modular thermal energy storage systems that store renewable energy as heat and convert it back to electricity on demand, targeting 24/7 power for AI data centers.
Exowatt's $70M Series A (Apr 2025) included Andreessen Horowitz (/fund/andreessen-horowitz) and Thrive Capital (/fund/thrive-capital), with Felicis leading. a16z also participated in a $20M seed in 2024.
Exowatt is at Series A based on its April 2025 $70M round.
AI data centers need reliable baseload power beyond intermittent renewables. Exowatt's thermal storage targets that gap as compute demand outpaces grid capacity.
No. Exowatt remains a private company.
Last updated: 2026-07-24