WattCarbon Raises Seed Extension Round

by Kay Aloha Villamor in July 18th, 2025

WattCarbon, a San Francisco, CA-based measurement and verification platform for distributed energy resources, has raised a seed extension funding round. 

Investors 

The round was led by Cerulean Ventures, with participation from City Light Capital, Tom O'Keefe, and existing investor True Ventures. 

Cerulean is a pre-seed venture capital firm that invests at the intersection of AI, data, and climate. The firm backs founders who create exponential solutions for nature and the built environment. 

WattCarbon Use of Funds 

The company will use the funds to scale platform development, expand market presence, and advance open-source measurement methodologies through the OpenEAC Alliance. 

About WattCarbon 

WattCarbon is a climate tech company offering a fully automated measurement and verification (M&V) platform for distributed energy resources. Its AI-powered Aristotle engine ingests utility, sub-meter, and device telemetry; applies statistically robust baselines; and delivers auditable savings and carbon-impact calculations in near real time. Headquartered in San Francisco, California, WattCarbon's mission is to become the authoritative "weights and measures" system for the energy transition.

Funding Details 

Company: WattCarbon, Inc. 

Raised: Undisclosed 

Round: Seed Extension 

Funding Date: July 2025 

Lead Investor: Cerulean Ventures 

Additional Investors: City Light Capital, Tom O'Keefe, True Ventures 

Company Website: https://wattcarbon.com/  

Software Category: Energy/ClimateTech – Measurement & Verification (M&V) 

Source: https://www.prweb.com/releases/wattcarbon-raises-seed-extension-to-accelerate-role-as-the-weights-and-measures-for-the-energy-transition-302505178.html 

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