Energy climate

Offstream

Website

Offstream is Vanta for carbon compliance. Today, every new infrastructure project, from data centers to biomass power plants has a complicated mess of local, state, federal, and private sector standards that they must understand and comply with to make their projects profitable. Offstream solves this by using LLMs to parse regulations, gener

Founded 2023Origin source ↗Checked 2026-09-15

Overview

Offstream is Vanta for carbon compliance.

Today, every new infrastructure project, from data centers to biomass power plants has a complicated mess of local, state, federal, and private sector standards that they must understand and comply with to make their projects profitable.

Offstream solves this by using LLMs to parse regulations, generate technical reports for customers, and manage 100,000+ operational data points on project’s lifecycles. We cut the time customers spend on compliance by 90% and at 1/5th of the cost of alternatives.

Company description As recorded 2026-11-08

Founders & team

Varsha Ramesh Walsh

Founder/CEO

CEO and co-founder at Offstream. HBS '23. Previously a strategy lead at Indigo Ag where I launched a traceable cotton business and got the business to $50M GMV bookings in a year. At Indigo, I experienced the pain point we are now solving at Offstream. We hired 80 people and spent $50M to just get carbon compliant.

Founder profile As recorded 2026-09-15

Zach Janicki

Founder/CTO

CTO and cofounder of Offstream. CS from Notre Dame. Previously 1st engineering hire at Repool (YC S21) building hedge fund software, and early engineer at Pathpoint building insurance brokerage software. I've spent my career turning paperwork into software

Founder profile As recorded 2026-09-15
10team members reported
Source-reported As recorded 2026-09-15

Founded 2023 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedDenver, CO, USA
Pricing evidenceNo pricing page confirmed
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year