Ambient Photonics Raises $175 Million Series B to Scale Low-Light Energy Harvesting Technology

By Global Infrastructure Sherpa · Jun 26, 2025

Investment Renewable Energy announced United States Jun 26, 2025

USD31M

Deal Value

development

Stage

Ambient Photonics, a developer of low-light energy harvesting technology, raised $175 million in a Series B funding round. The round included investments from L&G Capital, Fine Structure Ventures, IKEA Investment AB, Amazon Climate Pledge Fund, Tony Fadell's Build Collective, and General Catalyst. The funding will be used to scale production.

Source Intelligence

KEY DETAILS

The company also recently announced it had progressed to Part II of a USD 162m DOE loan guarantee. Ambient's technology was originally developed at the Warner Babcock Institute for Green Chemistry and funded since inception by Cthulhu Ventures.

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Deal Size

The Northern California company plans to use proceeds of its recent USD 31m Series A, along with a soon-to-be-announced debt component, to build out its first factory.

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Location

The Northern California company plans to use proceeds of its recent USD 31m Series A, along with a soon-to-be-announced debt component, to build out its first factory.

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Announcement

24th August 2022

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COD

with the objective of selling out the capacity before the factory opens in Q1 2023

PARTIES MENTIONED IN SOURCE

Universal Electronics Inc. partner

"One of its partners, Universal Electronics Inc.  (NASDAQ:UEIC), recently announced that its voice activated remote control system will be powered with this type of system."

Amazon's Climate Pledge Fund investor

"Investors in the Series A include Amazon's Climate Pledge Fund"

Ecosystem Integrity Fund investor

"Ecosystem Integrity Fund  (EIF)"

Tony Fadell’s Future Shape investor

"Tony Fadell’s Future Shape"

I Squared Capital investor

"I Squared Capital"

medium quality Enriched Feb 19, 2026