Organization · Accelerator
Greentown Labs
Greentown Labs is the world's largest climatetech and energy incubator, located in Somerville, Massachusetts, and Houston, Texas. It supports early-stage startups addressing climate challenges across various sectors.
Overview
What Greentown Labs does
What Greentown Labs is
Greentown Labs is the world's largest climatetech and energy incubator, located in Somerville, Massachusetts, and Houston, Texas. It supports early-stage startups addressing climate challenges across various sectors.
How it participates in the startup ecosystem
The current public profile supports program host and community capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Accelerator
- Founded
- Founded in 2011
- Approximate age
- About 15 years
- Structured capabilities
- Program host · Community
- Last reviewed
- April 2, 2026
What Accelerator means
An accelerator is a structured, short-term program designed to speed up a startup's progress toward product-market fit, traction, fundraising, or scale.
Open the glossary entryOfficial channels
Find Greentown Labs elsewhere
Open the official website or a supported primary organization account.
Capability profile
Greentown Labs as a program host
Program thesis
Greentown Labs is focused on supporting clean technology startups by providing resources, mentorship, and networking opportunities to help them develop and scale their solutions.
Focus narrative
Greentown Labs invests in various sectors related to clean technology, including agriculture, buildings, electricity, manufacturing, resiliency and adaptation, and transportation. The organization supports startups at different stages of development, from early-stage to growth-stage companies, focusing on innovative solutions that address environmental challenges.
Value and support
Greentown Labs offers resources, mentorship, and networking opportunities to clean technology startups, helping them to develop and scale their solutions effectively.
Availability
- Application state
- Not published
Focus and fit
- Stages
- Pre-seed · Seed · Series A · Series B
- Regions
- North AmericaUnited States
Capability profile
Greentown Labs as a community
Community overview
Greentown Labs is an organization focused on supporting clean technology startups. It was founded in 2011 and is based in Boston, Massachusetts, with an additional location in Houston, Texas. The organization provides resources, mentorship, and networking opportunities to help startups develop and scale their clean technology solutions.
Community focus
Greentown Labs invests in various sectors related to clean technology, including agriculture, buildings, electricity, manufacturing, resiliency and adaptation, and transportation. The organization supports startups at different stages of development, from early-stage to growth-stage companies, with a focus on innovative solutions that address environmental challenges.
Member value
Members gain access to resources, mentorship, and networking opportunities that are essential for developing and scaling clean technology solutions.
Membership
- Pricing models
- fixed-tuition
Format and cadence
- Modality
- in-person
- Schedule
- rolling-admissions
- Commitment
- light
Availability
- Membership state
- Accepting
Audience and fit
- Audience
- Founders · Investors
- Benefits
- mentorship and network-access
- Program types
- accelerator, fellowship, and community
- Selection criteria
- open
- Stages
- Pre-seed · Seed · Seed+ · Series A · Series B
- Regions
- North America
Community activity
Events and activity
Greentown Labs hosts events such as Demo Days, where startups present their innovations to potential investors and partners, and Annual Celebrations to commemorate milestones.
Notable members
Key team members include Emily Reichert, CEO, and Ryan Dings, Executive Vice President and General Counsel.
Common questions
What to know about Greentown Labs
Upseed classifies Greentown Labs under the Accelerator organization type. Its current public profile includes program host and community capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
April 2, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.