# Solaria funding: rounds and investors > Solaria has raised $139M across 6 rounds since 2009. Investors include Sigma Partners, Western Technology Investment and Adams Street Partners. Source: https://millionrounds.com/company/solaria (Millionrounds; every figure on the page links to its filing or article) United States · [Funded startup](https://millionrounds.com/companies) # Who invested in *Solaria* 6 rounds we have observed, with the 13 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. Cleantech Follow Solaria and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fsolaria) Funding summary Updated 27 Oct 2026 **$139M** raised across 6 rounds since 2009, from 6 sources **$7.0M** Debt **$65M** Series D **$30M** Venture **$6.1M** Venture **$8.1M** Venture **$23M** Round - **Latest round:** Round, $23M Jan 2018 - **Biggest round:** $65M Series D · Sept 2010 - **Step-up i:** 2.9× - **Investors:** 13 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. 2011 2013 2015 2017 **$7.0M** Debt **$65M** Series D **$30M** Venture **$6.1M** Venture **$8.1M** Venture **$23M** Round - **First round:** Debt, $7.0M - **Biggest round:** $65M - **Usual gap between rounds:** 15 months ## The rounds - **Jan 2018** Round **$23M** *3 new* [Presidio](https://millionrounds.com/fund/presidio) [Kline Hill Partners](https://millionrounds.com/fund/kline-hill-partners) [Structural Capital](https://millionrounds.com/fund/structural-capital) Reported by Greentechmedia SEC filing: $13M sold, first sale Nov 2017 - **Feb 2015** Venture **$8.1M** No investor was named in the report. From a historical funding record SEC filing: $8.1M sold, first sale Feb 2015 - **Jan 2014** Venture **$6.1M** No investor was named in the report. From a historical funding record SEC filing: $6.1M sold, first sale Jan 2014 - **Nov 2011** Venture **$30M** No investor was named in the report. Reported by gigaom.com SEC filing: $30M sold, first sale Nov 2011 - **Sept 2010** Series D **$65M** *3 new* [Western Technology Investment](https://millionrounds.com/fund/wti) [Adams Street Partners](https://millionrounds.com/fund/adams-street-partners) [Cycad Group](https://millionrounds.com/fund/cycad-group) Reported by sustainablebusiness.com SEC filing: $45M sold, first sale May 2010 - **Dec 2009** Debt **$7.0M** *7 new* [Sigma Partners](https://millionrounds.com/fund/sigma-partners) [CMEA Ventures](https://millionrounds.com/fund/cmea-capital) [NGEN Partners](https://millionrounds.com/fund/ngen-partners) [Mitsui Ventures](https://millionrounds.com/fund/mitsui-ventures) [DBL Investors](https://millionrounds.com/fund/dbl-investors) [Qcells](https://millionrounds.com/fund/qcells) Moserbaer India Reported by deals.venturebeat.com SEC filing: $7.0M sold, first sale Nov 2009 ## Founders and team From the SEC filings it signed: 2 on the team. - **Antonio R Alvarez** Executive Officer, Director i - **Howard R Wenger** Executive Officer, Director i On the board, as filed i *Clay R Zhu* *Isidoro R Quiroga* *Steve R Gomo* *Suvi R Sharma* *TJ R Rodgers* ## 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. **Debt** 2009 **Series D** 2010 **Venture** 2011 **Venture** 2014 **Venture** 2015 **Round** 2018 [Sigma Partners](https://millionrounds.com/fund/sigma-partners) [Western Technology Investment](https://millionrounds.com/fund/wti) [Adams Street Partners](https://millionrounds.com/fund/adams-street-partners) [CMEA Ventures](https://millionrounds.com/fund/cmea-capital) [NGEN Partners](https://millionrounds.com/fund/ngen-partners) [Mitsui Ventures](https://millionrounds.com/fund/mitsui-ventures) [DBL Investors](https://millionrounds.com/fund/dbl-investors) [Cycad Group](https://millionrounds.com/fund/cycad-group) [Presidio](https://millionrounds.com/fund/presidio) [Qcells](https://millionrounds.com/fund/qcells) ## Everyone who backed them [Sigma Partners](https://millionrounds.com/fund/sigma-partners) VC firm **1** round [Western Technology Investment](https://millionrounds.com/fund/wti) VC firm **1** round [Adams Street Partners](https://millionrounds.com/fund/adams-street-partners) VC firm **1** round [CMEA Ventures](https://millionrounds.com/fund/cmea-capital) VC firm **1** round [NGEN Partners](https://millionrounds.com/fund/ngen-partners) VC firm **1** round [Mitsui Ventures](https://millionrounds.com/fund/mitsui-ventures) Growth equity **1** round [DBL Investors](https://millionrounds.com/fund/dbl-investors) VC firm **1** round [Cycad Group](https://millionrounds.com/fund/cycad-group) Growth equity **1** round [Presidio](https://millionrounds.com/fund/presidio) Private equity **1** round [Qcells](https://millionrounds.com/fund/qcells) Investment firm **1** round [Kline Hill Partners](https://millionrounds.com/fund/kline-hill-partners) Private equity **1** round [Structural Capital](https://millionrounds.com/fund/structural-capital) Private credit **1** round Moserbaer India no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=solaria). ## Also claim to have backed them This firm lists Solaria as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above. [Five Stones Investment Group](https://millionrounds.com/fund/five-stones-investment-group) VC firm Per its own site ## Quick answers about Solaria ### Who invested in Solaria? Solaria's investors include Sigma Partners, Western Technology Investment, Adams Street Partners, CMEA Ventures and NGEN Partners, and 8 more on record. ### How much has Solaria raised? Solaria has raised $139M across 6 rounds since 2009. ### When did Solaria last raise? Solaria's most recent round was an Undisclosed round of $23M in Jan 2018. ### What was Solaria's biggest round? Solaria's largest round on record is $65M (Series D), in Sept 2010. ### Who backed Solaria first? Solaria's first round on record, in Dec 2009, was backed by Sigma Partners, CMEA Ventures and NGEN Partners and 4 others. ### What stage is Solaria at? Solaria's latest named round is an Undisclosed round, in Jan 2018. ### Where is Solaria based? Solaria is based in the United States. ## Companies like Solaria In the same sector, and raised in the last eighteen months. [**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**LanzaJet** $67M · Oct 2026](https://millionrounds.com/company/lanzajet)[**Pivot Energy** $500M · Oct 2026](https://millionrounds.com/company/pivot-energy)[**Peak Energy** $163M · Oct 2026](https://millionrounds.com/company/peak-energy)[**Renew** $207M · Oct 2026](https://millionrounds.com/company/renew)[**Optivolt** $37M · Oct 2026](https://millionrounds.com/company/optivolt) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. 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