# OpenSolar funding: rounds and investors

> OpenSolar has raised $20M across 1 round since 2025. Investors include Google, Titanium Ventures and 2150 Sustainability Fund. Every round with its source.

Source: https://millionrounds.com/company/opensolar (Millionrounds; every figure on the page links to its filing or article)

United States · [Venture startup](https://millionrounds.com/companies)

# Who invested in *OpenSolar*

One round we have observed, with the 3 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Cleantech Climate Tech Software

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Funding summary Updated 5 Nov 2026

**$20M** raised across 1 round since 2025, from 2 sources

- **Latest round:** Venture, $20M Oct 2025
- **Investors:** 3

See who backed them

## The rounds

- **Oct 2025** Venture **$20M** [Google](https://millionrounds.com/fund/google-assistant-investments) [Titanium Ventures](https://millionrounds.com/fund/titanium-ventures) [2150 Sustainability Fund](https://millionrounds.com/fund/2150-sustainability-fund) Reported by Startup Daily and 1 other

## Founders and team

From OpenSolar's own website: 2 founders, 8 on the team.

**Andrew Birch** CEO and Co-founder

**Adam Pryor** CTO and Co-founder

- **Andy Rose** Global Head of Commercial
- **Joe Abel** Global Head of Finance & Monetization
- **Lavinia Davison** Global Head of Operations
- **Louise Butterworth** Global Head of User Success
- **Oz Wilks** Global Head of Product
- **Patrick Crane** Global Head of Growth
- **Tom Byrne** Global Head of Software
- **Tom Karemacher** Global Head of Sales

## Everyone who backed them

[Google](https://millionrounds.com/fund/google-assistant-investments) Accelerator **1** round

[Titanium Ventures](https://millionrounds.com/fund/titanium-ventures) VC firm **1** round

[2150 Sustainability Fund](https://millionrounds.com/fund/2150-sustainability-fund) Investment firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=opensolar).

## Also claim to have backed them

These 4 firms list OpenSolar 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.

[Telstra Ventures](https://millionrounds.com/fund/telstra-ventures) VC firm Per its own site

[Aperture Capital](https://millionrounds.com/fund/aperture-capital) VC firm Per its own site

[Astir Capital](https://millionrounds.com/fund/astir-capital) Family office Per its own site

[EnergyLab](https://millionrounds.com/fund/energylab) Accelerator Per its own site

## Quick answers about OpenSolar

### Who invested in OpenSolar?

OpenSolar's investors include Google, Titanium Ventures and 2150 Sustainability Fund.

### How much has OpenSolar raised?

OpenSolar has raised $20M across 1 round since 2025.

### When did OpenSolar last raise?

OpenSolar's most recent round was a Venture of $20M in Oct 2025.

### What was OpenSolar's biggest round?

Its most recent round, $20M in Oct 2025, is also its largest on record.

### Who backed OpenSolar first?

OpenSolar's first round on record, in Oct 2025, was backed by Google, Titanium Ventures and 2150 Sustainability Fund.

### What stage is OpenSolar at?

OpenSolar's latest named round is a Venture, in Oct 2025.

### Where is OpenSolar based?

OpenSolar is based in the United States.

## Companies like OpenSolar

In the same sector, and raised in the last eighteen months.

[**Nooks** $543M · Nov 2026](https://millionrounds.com/company/nooks)[**Omni** $244M · Nov 2026](https://millionrounds.com/company/omni)[**Applied Compute** $580M · Nov 2026](https://millionrounds.com/company/applied-compute)[**Traversal** $125M · Nov 2026](https://millionrounds.com/company/traversal)[**Clark** $11M · Nov 2026](https://millionrounds.com/company/clark)[**Serval** $272M · Oct 2026](https://millionrounds.com/company/serval)

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