Climate Tech

Grid-scale storage graduates from climate niche to core infrastructure

Multi-day grid battery developers are attracting institutional capital at a scale that signals a category transition. Form Energy's $750M Series G — backed by T. Rowe Price, Sequoia, Franklin Templeton, TPG Rise Climate, and GE Vernova — is the clearest marker: investors best known for blue-chip equities and industrial conglomerates are now anchoring climate-tech mega-rounds. CMBlu Energy's non-lithium Organic SolidFlow batteries and Antora Energy's thermal battery approach for industrial facilities further illustrate how multi-chemistry, long-duration storage is moving from lab curiosity to deployable infrastructure. The week of July 13 alone saw $8.2B flow into the sector, confirming institutional conviction is not episodic.

The convergence of AI infrastructure buildout and clean energy is reshaping who funds and who buys climate-tech output. Redwood Materials is supplying used EV batteries as alternative energy for Crusoe's Nevada data center, while Exowatt (a16z-backed) delivers renewable solar infrastructure directly to hyperscalers. Elemental Impact's Data Center Innovation Initiative — partnering Amazon, Google, Meta, and Microsoft — uses AI data centers as real-world test beds for advanced cooling, energy storage, and low-carbon materials. Gradiant, a water-cooling infrastructure company for data centers, raised a Series E at a $2B valuation. Google ranks as the #1 investor by deal count (10 deals) in this theme, underlining that hyperscalers are not just customers but active capital allocators in clean energy.

Why it matters · Clean energy startups that can credibly serve AI data center demand unlock a faster, higher-margin commercial path than traditional utility procurement cycles.

Capital is flowing into an increasingly diverse set of storage chemistries and mechanisms. CMBlu Energy's solid-flow organic batteries offer non-flammable, rare-earth-free storage with 2–3× longer discharge cycles than lithium-ion. Antora Energy stores electricity as heat for industrial facilities and grids. Moment Energy repurposes EV batteries for second-life BESS systems. Anode deploys on-demand mobile microgrids for grid-independent energy. The stage mix reinforces the theme: Series A ($5.4B) and Series C ($6.4B) rounds dominate capital deployment, suggesting these companies are scaling commercially rather than remaining at proof-of-concept.

Why it matters · Investors concentrated in lithium-ion face rising substitution risk as non-lithium chemistries achieve commercial deployments and attract institutional backing.

Standard Nuclear emerged from stealth with $42M before closing a $140M Series A led by Decisive Point, producing TRISO and HALEU-based fuels for advanced reactors — acquiring assets from bankrupt Ultra Safe Nuclear in the process. Fervo Energy, backed by Breakthrough Energy Ventures, is targeting a $6.5B IPO valuation for enhanced geothermal. Endurance Energy is pursuing undersea geothermal projects for round-the-clock clean power. The $10B Berkshire Hathaway growth round (signal [21]) underscores that the largest pools of patient capital now view energy transition infrastructure as an asset class.

Why it matters · Nuclear and geothermal are transitioning from speculative science projects to bankable infrastructure, opening project-finance capital stacks previously inaccessible to startups.

Thirty percent of global CO₂ emissions now carry a carbon price per Our World in Data analysis, a structural tailwind that improves the unit economics of carbon dioxide removal and low-carbon materials companies. Crew Carbon uses a mixed equity-and-grant model to fund CDR. Low Carbon Materials develops carbon-negative additives for concrete and asphalt in the UK. Terra CO2 Technologies offers low-carbon cement replacements. As carbon pricing extends to more jurisdictions, the addressable market for these startups expands without requiring voluntary corporate buyers alone.

Why it matters · Broader carbon pricing creates durable demand signals that allow removal and materials startups to underwrite longer-term offtake agreements and attract project finance.