# Khosla Ventures' Energy Investments: 17 Startups in Its Portfolio (2026) > The 17 Energy startups Khosla Ventures has backed, by stage: $3.1B raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/khosla-ventures-energy-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Stage not reported 7 - [*S* Ses](https://millionrounds.com/company/ses) - [BBOXX](https://millionrounds.com/company/bboxx) - [Natron Energy](https://millionrounds.com/company/natron-energy) - [Sonocharge Energy](https://millionrounds.com/company/sonocharge-energy) - [Realta Fusion](https://millionrounds.com/company/realta-fusion) - [Ambri](https://millionrounds.com/company/ambri) - [Solum](https://millionrounds.com/company/solum) ## Series C and later 5 - [*GE* GreatPoint Energy](https://millionrounds.com/company/greatpoint-energy) - [LanzaTech](https://millionrounds.com/company/lanzatech) - [Varentec](https://millionrounds.com/company/varentec) - [LightSail Energy](https://millionrounds.com/company/lightsail-energy) - [Firefly Energy](https://millionrounds.com/company/firefly-energy) ## Growth 3 - [*S* SunEdison](https://millionrounds.com/company/sunedison) - [Kior](https://millionrounds.com/company/kior) - [Mainspring Energy](https://millionrounds.com/company/mainspring-energy) ## Series A 2 - [RedoxBlox](https://millionrounds.com/company/redoxblox) - [Caelux](https://millionrounds.com/company/caelux) ## Segment by segment ### Stage not reported 7 startups · $565M raised - [*S* **Ses**](https://millionrounds.com/company/ses) SES offers tools, knowledge and materials that help divorced parents deal with their challenges. United States $288M - [**BBOXX**](https://millionrounds.com/company/bboxx) Bboxx manufactures plug and play solar systems. United Kingdom $167M - [**Natron Energy**](https://millionrounds.com/company/natron-energy) Natron Energy is an energy storage company that develops sodium ion battery solutions leveraging Prussian Blue electrode materials. United States $55M - [**Sonocharge Energy**](https://millionrounds.com/company/sonocharge-energy) Sonocharge Energy develops a technology that enables batteries to charge. United States $24M - [**Realta Fusion**](https://millionrounds.com/company/realta-fusion) Realta Fusion develops fusion energy technology for the production of industrial heat and power. United States $19M - [**Ambri**](https://millionrounds.com/company/ambri) Ambri is an American startup focused on long-duration grid-scale energy storage using its proprietary Liquid MetalTM battery technology. United States $11M - [**Solum**](https://millionrounds.com/company/solum) Solum manufactures and delivers advanced digital labeling solutions and other electronic products to businesses. Spain $1.1M ### Series C and later 5 startups · $897M raised - [*GE* **GreatPoint Energy**](https://millionrounds.com/company/greatpoint-energy) GreatPoint Energy is a technology-driven natural resources company. United States $562M - [**LanzaTech**](https://millionrounds.com/company/lanzatech) LanzaTech reduces emissions and makes new products for a circular carbon economy. United States $206M - [**Varentec**](https://millionrounds.com/company/varentec) Varentec is a provider of power electronics-based Smart Grid control solutions for municipal, cooperatives and investor-owned utilities. United States $55M - [**LightSail Energy**](https://millionrounds.com/company/lightsail-energy) LightSail Energy develops energy storage systems. United States $43M - [**Firefly Energy**](https://millionrounds.com/company/firefly-energy) Firefly Energy is a developer of lead-acid battery technologies. United States $31M ### Growth 3 startups · $1.6B raised - [*S* **SunEdison**](https://millionrounds.com/company/sunedison) SunEdison is the largest global renewable energy development company. United States $1.1B - [**Kior**](https://millionrounds.com/company/kior) At home Medical Grade Laser Hair Removal Machine. United States $299M - [**Mainspring Energy**](https://millionrounds.com/company/mainspring-energy) Mainspring Energy is a power generation company based in Menlo Park, California, founded in 2010. United States $258M ### Series A 2 startups · $52M raised - [**RedoxBlox**](https://millionrounds.com/company/redoxblox) RedoxBlox is a post-Series A startup based in San Diego, California, focused on transforming the energy sector with its innovative United States $40M - [**Caelux**](https://millionrounds.com/company/caelux) Caelux® is a renewable energy semiconductor manufacturer based in Baldwin Park, California. United States $12M **How this map is made.** Every startup here works in Energy and has raised money in a round we track that names Khosla Ventures 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 **Khosla Ventures' AI portfolio** 176 startups · $251B](https://millionrounds.com/portfolio-maps/khosla-ventures-ai-portfolio)[Sector portfolio **Khosla Ventures' Biotech portfolio** 53 startups · $4.2B](https://millionrounds.com/portfolio-maps/khosla-ventures-biotech-portfolio)[Sector portfolio **Khosla Ventures' Fintech portfolio** 32 startups · $7.0B](https://millionrounds.com/portfolio-maps/khosla-ventures-fintech-portfolio)[Sector portfolio **Khosla Ventures' Healthtech portfolio** 31 startups · $2.7B](https://millionrounds.com/portfolio-maps/khosla-ventures-healthtech-portfolio)[Sector portfolio **Khosla Ventures' Big Data & Analytics portfolio** 18 startups · $1.7B](https://millionrounds.com/portfolio-maps/khosla-ventures-big-data-analytics-portfolio)[Sector portfolio **Khosla Ventures' Internet portfolio** 17 startups · $1.4B](https://millionrounds.com/portfolio-maps/khosla-ventures-internet-portfolio) ## Raising from investors like Khosla Ventures? 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