Cleantech Open is looking for the world’s most promising startups in the cleantech industry! Do you have an idea that could help solve an environmental or energy challenge? Apply to the 2026 accelerator to gain access to a full business development program that includes expert mentors, investor networking opportunities, industry connections, and a chance to compete regionally and nationally for cash prizes and in-kind services to launch your venture. Applications are due TODAY, April 6. More information here.
CriticalMass, MassCEC’s latest growth-stage Tech-to-Market program provides up to $1,000,000 in grant funding, specialized services, and partner matchmaking to startup applicants with strong track records of early-stage commercialization and successful demonstration projects. Successful applicants will propose commercial deployment projects that address important decarbonization challenges within MassCEC’s four focus areas, help to grow the state’s clean energy economy, and contribute to Massachusetts’ continued clean energy leadership. Applications are due April 7. More information here.
Aspire Climatetech: Climatetech startups, engage with investor-mentors and prepare to raise capital with Aspire Climatetech! Aspire is a five-week intensive, hybrid program that prepares startups for investor engagement. Investor-mentors work one-on-one with startups to simulate due diligence conversations and integrate feedback into deal room materials in real-time. This program aims to prepare startups to raise equity investment. Apply by April 8, 2026. More information here.
EforAll’s Business Accelerator Program gives aspiring entrepreneurs the tools, training, and support they need to succeed. Entrepreneurship for All (EforAll) is a national nonprofit organization with a proven record of supporting small businesses. Applications are due April 9. More information here.
The Auxilium-MBI (Massachusetts Biomedical Initiatives) accelerator is a three-month, in-person program supporting early-stage life science and healthcare startups. Companies selected to participate receive a $250,000 investment from Auxilium to support growth beyond early validation. Applications are due April 11. More information here.
The Eddies is a 7-month innovation-support system based on Individualized Mentoring, Strategic Guidance, Leadership Education, and Connections to Resources; its objective is to help early-stage startups (pre-Series C) take the next steps in their commercialization journey. Their curated education also includes weekly educational modules brought to the cohort by seasoned ecosystem professionals, successful founders, engaged investors, and many industry experts. Applications are due April 17. More information here.
The HardTech Project Funding Program: Hardware founders, are you interested in no-cost marketing, manufacturing and fundraising support to manufacture in Massachusetts? MassTech Collaborative is teaming up with The HardTech Project and FORGE to show that reducing hardware investment risk is the key to attracting more capital to fund hardware innovation. You’ll get a manufacturing readiness report to prove your startup’s product execution capabilities to potential investors, as well as marketing and PR support for a raise including crowdfunding. Applications are due April 24. Learn more and apply here.
TechStars Startup Weekend returns on May 1-3: Join a 54-hour experience designed for aspiring founders to pitch ideas, form teams, and build working prototypes. Open to all experience levels. Friday night you pitch ideas, vote, and form teams. Saturday you build. Sunday you present to judges. You leave with a prototype, a team experience, and real entrepreneurship skills. More information here.
Blue Ridge Labs’ Founder Fellowship helps early-stage founders move from idea to MVP through mentorship, research, and hands-on support. Blue Ridge Labs is Robin Hood’s venture studio for scaling innovations to solve the most pressing social challenges. Turn your bold ideas into a fundable venture that drives economic mobility. Applications are due May 3. More information here.
Boston Climate Week at Greentown Labs, May 6-7: Boston Climate Week is an annual gathering of climate events, workshops, and community activities happening across Greater Boston. It brings together businesses, nonprofits, government, and individuals to accelerate climate action in our region. Greentown Boston is excited to have a full line-up of events during the inaugural Boston Climate Week! Join them at the incubator on May 6 and 7 for two full days of programming—including a Climate Salon, startup pitch event, and a special edition of the signature EnergyBar. More information here.
Climate-Critical Underrepresented Business Support (CUBS) Grants provide up to $800,000 in grant funds and technical support to applicants to support the expansion of services through a regional “Hub and Spoke” model. This model provides accessible and uniform support through regional Hubs that will offer a suite of baseline core services designed to help underrepresented businesses become “business ready” to bid successfully on clean energy procurements. Spoke partners will offer complementary or additional services designed to enhance Hub services and further help underrepresented businesses pivot and grow in the clean energy sector. Applications are due May 8. More information here.
DEBUT 2026: With $190,000 in prizes, the DEBUT Challenge is open to undergraduate student teams working on innovative solutions to unmet health and clinical problems. Applications are now being accepted for the National Institute of Biomedical Imaging and Bioengineering and VentureWell Design by Biomedical Undergraduate Teams (DEBUT) Challenge, a competition that recognizes undergraduate excellence in biomedical design and innovation. DEBUT challenges teams of students in undergraduate biomedical education to solve real-world problems in healthcare. Apply by June 5, 2026. More information here.
The Boost Platform from Sandia National Laboratories, the Department of Energy (DOE), and industry partner FedTech, is an initiative that brings national labs, startups, academia, and DOE-developed technologies together to find solutions to regional energy and infrastructure challenges. Learn from innovators across industries to develop entrepreneurial skills, ranging from technical know-how to customer discovery. Applications are due June 26. More information here.
The EforAll Business Accelerator Trimester 3 is a free, 12-week program offered three times a year. The program delivers immersive business training, peer-to-peer support, mentorship, and access to an extended professional network. Anyone looking to gain increased business confidence, clarity, and connections is encouraged to apply. Applications are due July 16. More information here.
HAYVN HATCH is a pitch night for female founders, held two times a year at HAYVN, a women-centric coworking & event space. Female Founders are invited to present at HAYVN HATCH. The businesses that are most likely to be selected are scalable, with opportunity for growth and an interesting USP. Pitches will consist of a 3 minute presentation by you, the founder, followed by 5 minutes for Judge / Audience questions. Total time is 8 minutes. Applicants MUST have a deck to submit with their application. Application Deadline: August 21. More information here.
Startup Boston Week – September 14-18: Are you a founder? Do you currently work at a startup? Are you new to the startup scene in Boston or New England? Looking to grow your network? You’re in the right place. Startup Boston Week, is BACK for Year 10. This is THE conference where the entire startup community comes together – all industries, all departments, all company stages. Don’t miss out on your chance to network with the startup community! More information here.
The Northwestern Mutual Accelerator™ Powered by gener8tor program is focused on addressing barriers to financial equity and expanding financial access for tech startups aligned to Northwestern Mutual’s key strategic areas of focus including fintech, insurtech, digital health and data analytics. More information here.
ARPA-E SCALEUP Ready Program: The SCALEUP Program is ARPA-E’s early commercialization program designed to help teams turn their groundbreaking ideas into reality. During the SCALEUP Ready program, ARPA-E experts will provide guidance to awardees as they establish their business model, supply chain, and sales channels. Applications are now accepted on a rolling basis. More information here.
Accelerate Your Impact: Massachusetts Small Business Coaching Program: Boston Impact Initiative (BII) and Lawyers for Civil Rights (LCR) have partnered to offer entrepreneurs and small business owners coaching and resources to build sustainable and socially impactful businesses. More information here.
FinTech Sandbox is a nonprofit which enables financial technology entrepreneurs to build robust products by providing access to critical data, development tools and a curated network of customers, entirely for free. FinTech Sandbox is open to all startups innovating in financial services that can use financial data products we offer for product development and testing. The spirit of the program is to offer data to start-ups that could not otherwise afford it. More information here.
Techstars is the worldwide network that helps entrepreneurs succeed. As one of the largest pre-seed investors in the world, they funded over 3,200 companies that have gone on to have a market cap of $79B+. Each company receives up to $120,000 in funding, and access to the worldwide network of investors, hands-on mentorship, and over $4M of perks. Applications are open year-round and will be considered on a rolling basis. Your application will be valid for 12 months from the date of application. More information here.
Through its 2030 Fund, MassCEC invests at the earliest stages of company development across the climatetech landscape. With a focus on tough tech and underserved sectors, MassCEC investments aim to advance clean technology, fill funding gaps, create green jobs, and leverage private capital throughout the Commonwealth. More information here.
P&G Ventures is an early stage startup studio within Procter & Gamble that partners with entrepreneurs to accelerate billion dollar ideas that improve consumers’ lives. Focus areas include nontoxic home and garden, women’s health, anti-aging, daily wellness, and cleaning/sanitizing. More information here.
IFundWomen Boston is a crowdfunding ecosystem designed to help the women-led startups, small businesses, nonprofits, side hustles, and passion projects of Boston raise funds to launch and grow. Join iFundWomen if you are a Boston-area women-led startup to fundraise for your business and get your ideas launched. More information here.
AmplifyMass supports academic researchers and companies who need cost-share or adders for federal/non federal prime awards. AmplifyMass provides up to $300,000 for academic or company projects pursuing cost-share or adders for federal or non-federal prime awards (such as awards from ARPA-E, NSF, DOE, and USABC), or up to $100,000 for academic projects that are not tied directly to a prime grant. The program supports projects that aim to commercialize or substantially de-risk an innovation that falls within MassCEC’s mission. More information here.
SoGal Foundation has teamed up with Winky Lux, bluemercury, twelveNYC, Twilio, and other sponsors to make a small step towards progress by providing several $10K and $5K cash grants to Black women or nonbinary entrepreneurs. Awardees will also receive tactical help navigating the fundraising environment at large so that they will have a more equitable opportunity at scaling the next billion dollar idea. They will also receive lifetime “ask-me-anything” access to the SoGal Foundation and SoGal Ventures teams. More information here.
The Innovate413 Accelerator is a five-month, no-equity launch program that helps founders test ideas, find real customers, and raise early funding. Innovate413’s model emphasizes early customer access, providing introductions to more than 100 employers and nonprofits in advanced manufacturing, sustainability, fintech, and adjacent sectors. Startups also receive hands-on AI and product development support through UMass Center for Data Science & AI and PixelEdge, along with structured investor exposure throughout the program. Standout teams may receive up to $10,000 in grant funding. More information here.