Massachusetts Clean Energy Accelerators

Accelerators aim to accelerate the life cycle of young innovative companies. Startup accelerators support early-stage companies by providing access to mentors, investors, corporate partners, and customers through organized events and workshops. Startups typically enter accelerators on a competitive basis for a fixed period of time as a cohort of companies. Typically, companies will work through specific pain points and milestones to accelerate the life cycle of their companies. The programs typically run for 3-6 months and culminate in a public pitch event or demo day where start-ups have the opportunity to win cash or in-kind prizes. Accelerator staff help mitigate market barriers by connecting start-ups with mentors, investors, corporate partners and customers through organized events and educational workshops. 

If you are a clean energy start-up looking for an accelerator program, review the accelerators featured on this page to find the best fit for your clean energy business. For supplemental information, review MassCEC's AccelerateMass One-Pager. For additional resources, review MassCEC's webpage on Incubators and Business Resources for start-up companies. 

If you are an accelerator that supports clean energy start-ups, visit the Accelerator Funding Webpage to learn about MassCEC's funding program for accelerator operations, management, and clean energy scholarships. 



Cleantech Open Northeast (Boston/Northeast Region) - Cleantech Open is a US-wide cleantech startup accelerator program, with the mission to find, fund, and foster entrepreneurs with ideas to solve our greatest environmental and energy challenges. Their annual program uses mentoring, training and coaching to connect cleantech startups with the resources that will accelerate their successes, as well as a national platform for media and public visibility. 


MassChallenge (Boston/Global) - MassChallenge is a no equity and not-for-profit organization that runs an annual accelerator program and startup competition, documenting and organizing key resources, and organizing training and networking events. They aim to promote innovation, collaboration and commercialization, address the seed-stage investment gap, provide educational opportunities for entrepreneurs, and showcase entrepreneurship assets and infrastructure locally and nationally. Accelerator programs are run in Boston, London, Jerusalem, Lausanne and Mexico City. 


TiE ScaleUp (Boston) - TiE ScaleUp is a five month accelerator program for New England companies that have already received seed financing. They work closely with select startup companies to mentor them, refine their business model, obtain access to capital, tap into a peer network for ongoing support, and gain access to executive roundtables. The program culminates in a Demo Day to leaders in the entrepreneurial ecosystem. 


Techstars (Boston/Global) - Techstars is a three month accelerator program with  intense hands-on mentorship from Techstars mentors; connections to the Techstars Network of over 5,000 founders, alumni and mentors globally; 400 perks worth over $1M; office space for three months; demo day and other investor connections; equity back guarantee, the only one of its kind in the industry. Companies receive a $100,000 convertible note upon acceptance and an additional $20,000 is offered in exchange for 6% common stock. Additionally they receive access to Techstars resources for life.


Venture Well (Hadley) - VentureWell is a higher education network that cultivates revolutionary ideas and promising inventions. VentureWell helps to cultivate skills and creativity to bring new ideas to the market, often they are first to validate, support and guide an idea with potential.

The ASPIRE program (Accelerating Startup Partnership and Investment Readiness) provides training and support to early stage science and technology startup companies. Produced in partnership with incubators, ASPIRE is a series of experimental, concise, sector-specific workshops that prepare high-potential, emerging companies for investment and critical partnerships.


Village Capital (Washington D.C./Global) - Village Capital seeks innovators who are solving global problems, focusing specifically on accessing opportunity for underserved communities (through health, education, and financial inclusion ventures) and resource sustainability of the planet (through energy and agriculture ventures). The program that village capital puts their companies through provides them with the tools they need to grow a successful business such as training in team management, customer discovery, building a solid financial plan and preparing to take on investment, as well as the opportunity to build relationships with mentors, customers, stakeholders and investors. At the conclusion of the program, the companies assess each other and decide which two companies will receive seed capital from Village Capital. 


Valley Venture Mentors (Springfield, MA) - Valley Venture Mentors is building, supporting, and maintaining a community to launch an entrepreneurial renaissance. VVM offers a way to connect startups with the right Business Executive mentors in their industry in an effort to help these startup entrepreneurs move their companies forward.