# Lowercarbon Capital's Energy Investments: 10 Startups in Its Portfolio (2026) > The 10 Energy startups Lowercarbon Capital has backed, by stage: $3.2B raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/lowercarbon-capital-energy-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Series B 4 - [Thea Energy](https://millionrounds.com/company/thea-energy) - [Fuse Energy](https://millionrounds.com/company/fuse-energy) - [Gridware](https://millionrounds.com/company/gridware) - [Flair](https://millionrounds.com/company/flair) ## Series C and later 2 - [Base Power](https://millionrounds.com/company/base-power) - [Antora Energy](https://millionrounds.com/company/antora-energy) ## Stage not reported 2 - [Xcimer Energy](https://millionrounds.com/company/xcimer-energy) - [*AE* Avalanche Energy](https://millionrounds.com/company/avalanche-energy) ## Pre-seed and seed 2 - [AirLoom Energy](https://millionrounds.com/company/airloom-energy) - [Holy Grail](https://millionrounds.com/company/holy-grail) ## Segment by segment ### Series B 4 startups · $292M raised - [**Thea Energy**](https://millionrounds.com/company/thea-energy) Thea Energy is a fusion energy startup focused on commercializing scalable and zero-emission power through advanced stellarator technology. United States $120M - [**Fuse Energy**](https://millionrounds.com/company/fuse-energy) Fuse is an energy supplier that offers the UK's cheapest electricity tarif. United Kingdom $111M - [**Gridware**](https://millionrounds.com/company/gridware) Gridware is a leading cybersecurity company based in Sydney, Australia, dedicated to protecting businesses, governments, and organ United States $55M - [**Flair**](https://millionrounds.com/company/flair) Flair, Inc. United States $5.7M ### Series C and later 2 startups · $2.8B raised - [**Base Power**](https://millionrounds.com/company/base-power) BasePower CHP Combined Heat and Power renewable energy developer and funder. United States $2.2B - [**Antora Energy**](https://millionrounds.com/company/antora-energy) Antora Energy is an American energy technology company founded in 2018, focused on developing modular thermal batteries that provi United States $565M ### Stage not reported 2 startups · $129M raised - [**Xcimer Energy**](https://millionrounds.com/company/xcimer-energy) Xcimer Energy is an inertial fusion company offering laser-driven fusion to provide cheap, abundant, and carbon-free energy. United States $100M - [*AE* **Avalanche Energy**](https://millionrounds.com/company/avalanche-energy) United States $29M ### Pre-seed and seed 2 startups · $10M raised - [**AirLoom Energy**](https://millionrounds.com/company/airloom-energy) AirLoom Energy offers wind energy harvesting services. United States $7.5M - [**Holy Grail**](https://millionrounds.com/company/holy-grail) Holy Grail is a technology company based in Mountain View, California, founded in 2019. United States $2.7M **How this map is made.** Every startup here works in Energy and has raised money in a round we track that names Lowercarbon Capital as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Sector portfolio **Lowercarbon Capital's Cleantech portfolio** 18 startups · $3.5B](https://millionrounds.com/portfolio-maps/lowercarbon-capital-cleantech-portfolio)[Sector portfolio **Lowercarbon Capital's Agtech portfolio** 10 startups · $424M](https://millionrounds.com/portfolio-maps/lowercarbon-capital-agtech-portfolio)[Co-investors **Who invests with Lowercarbon Capital** 85 co-investors](https://millionrounds.com/portfolio-maps/lowercarbon-capital-co-investors)[Portfolio map **Lowercarbon Capital portfolio map** 76 startups · $9.9B](https://millionrounds.com/portfolio-maps/lowercarbon-capital-portfolio-map)[Sector portfolio **Techstars' AI portfolio** 336 startups · $4.9B](https://millionrounds.com/portfolio-maps/techstars-ai-portfolio)[Sector portfolio **Alumni Ventures' AI portfolio** 302 startups · $36B](https://millionrounds.com/portfolio-maps/us-strategic-tech-fund-an-alumni-ventures-fund-ai-portfolio) ## Raising from investors like Lowercarbon Capital? Find the investors who back startups like yours, with their cheques, rounds and partners, in the app with filters, lists and exports. [Find investors](https://millionrounds.com/login?join=1&next=/app/investors)[Market maps](https://millionrounds.com/market-maps)