# Mill funding: rounds and investors > Mill has raised $70M across 2 rounds since 2023. Investors include Google Ventures, Breakthrough Energy and Lowercarbon Capital. Every round with its source. Source: https://millionrounds.com/company/mill (Millionrounds; every figure on the page links to its filing or article) United States · [Venture startup](https://millionrounds.com/companies) # Who invested in *Mill* 2 rounds we have observed, with the 5 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. Agtech Raised 11 months ago Funding summary Updated 27 Oct 2026 **$70M** raised across 2 rounds since 2023, from 2 sources - **Latest round:** Venture Dec 2025 - **Biggest round:** $70M Series C · Sept 2023 - **Investors:** 5 See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2024 2025 **$70M** Series C **?** Venture - **First round:** Series C, $70M - **Biggest round:** $70M - **Between rounds:** 2.3 years ## The rounds - **Dec 2025** Venture **Amount undisclosed** *4 returning* [Google Ventures](https://millionrounds.com/fund/gv) [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) [Fifth Wall](https://millionrounds.com/fund/fifth-wall) Source recorded - **Sept 2023** Series C **$70M** *5 new* [Google Ventures](https://millionrounds.com/fund/gv) [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) [Fifth Wall](https://millionrounds.com/fund/fifth-wall) [Energy Impact Partners](https://millionrounds.com/fund/energy-impact-partners) Source recorded ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Series C** 2023 **Venture** 2025 [Google Ventures](https://millionrounds.com/fund/gv) [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) [Fifth Wall](https://millionrounds.com/fund/fifth-wall) [Energy Impact Partners](https://millionrounds.com/fund/energy-impact-partners) ## Everyone who backed them [Google Ventures](https://millionrounds.com/fund/gv) Corporate VC **2** rounds [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) VC firm **2** rounds [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) VC firm **2** rounds [Fifth Wall](https://millionrounds.com/fund/fifth-wall) VC firm **2** rounds [Energy Impact Partners](https://millionrounds.com/fund/energy-impact-partners) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=mill). ## Also claim to have backed them These 5 firms list Mill as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Gigascale Capital](https://millionrounds.com/fund/gigascale-capital) VC firm Per its own site [BRICKS FUND TOKYO](https://millionrounds.com/fund/bricks-fund-tokyo) Corporate VC Per its own site [Buckhill Capital LP](https://millionrounds.com/fund/buckhill-capital-lp) VC firm Per its own site [Hawktail](https://millionrounds.com/fund/hawktail) VC firm Per its own site [Prime Partners](https://millionrounds.com/fund/prime-partners) VC firm Per its own site ## Quick answers about Mill ### Who invested in Mill? Mill's investors include Google Ventures, Breakthrough Energy, Lowercarbon Capital, Fifth Wall and Energy Impact Partners. ### How much has Mill raised? Mill has raised $70M across 2 rounds since 2023. One round did not disclose an amount, so the total is a floor. ### When did Mill last raise? Mill's most recent round was a Venture in Dec 2025. ### What was Mill's biggest round? Mill's largest round on record is $70M (Series C), in Sept 2023. ### Who backed Mill first? Mill's first round on record, in Sept 2023, was backed by Google Ventures, Breakthrough Energy and Lowercarbon Capital and 2 others. ### What stage is Mill at? Mill's latest named round is a Venture, in Dec 2025. ### Where is Mill based? Mill is based in the United States. ## Companies like Mill In the same sector, and raised in the last eighteen months. 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