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The energy sector is being reshaped by startups attracting major funding for new technologies.
For instance, Commonwealth Fusion Systems has raised $2.9 billion to commercialize fusion energy. On the other end, recent startups like Base Power are providing home backup power solutions.
Below is our list of 100 Energy startups worth keeping an eye on.
Everything you need to raise funding for your startup, including 3,500+ investors, 7 tools, 18 templates and 3 learning resources.
Buy It For $97 $297 →Information about the industries, countries, and cities they generally invest in.
Get the Sheet for $50Information about their valuation, HQ's location, founded year, name of founders, funding amount and number of employees.
Get the Sheet for $50List of startup investors in the BioTech, Health, and Medicine industries, along with their Twitter, LinkedIn, and email addresses.
Get the Sheet for $50List of 250 startup investors in the AI and Machine Learning industries, along with their Twitter, LinkedIn, and email addresses.
Get the Sheet for $50List of 250 startup investors in the FinTech and Finance industries, along with their Twitter, LinkedIn, and email addresses.
Get the Sheet for $50Tether builds AI software that turns millions of parked electric vehicles into the world’s largest battery. Their platform manages this distributed energy network, helping to balance the power grid and integrate more renewable sources.
Commonwealth Fusion Systems is creating a faster path to commercial fusion energy. They build compact, powerful tokamak systems using high-temperature superconducting magnets to deliver clean power to the grid.
X-energy designs and builds advanced small modular nuclear reactors and the fuel technology required for clean energy generation. Their work focuses on creating a safer, more scalable source of carbon-free power for industrial use and electricity grids.
Helion Energy develops fusion power technology with the goal of generating clean, carbon-free electricity. Their team is building the world's first fusion power plants to help decarbonize the global energy grid.
Torus develops smart energy storage systems that help homeowners and communities manage their own renewable power. Their integrated hardware and software solutions aim to make clean energy more accessible and reliable for everyday use.
Base Power pairs a home battery with an electricity plan to give homeowners reliable backup power. Their integrated system helps lower monthly energy bills and ensures the lights stay on during an outage.
Masdar develops and operates a global portfolio of renewable energy projects, with a focus on solar, wind, and geothermal power. They are a key player in advancing clean energy initiatives and investing in sustainable technologies around the world.
EcoFlow builds a range of portable power stations and solar-powered generators designed for off-grid living and home backup. They create accessible, eco-friendly energy solutions that provide reliable power for everything from camping trips to professional work sites.
Aalo Atomics develops and manufactures compact nuclear reactors for clean energy production. Their advanced, sodium-cooled power plants are designed to help create a zero-carbon world.
Unbound Potential builds large-scale energy storage systems to help manage power grids and integrate renewable sources. Their work focuses on creating advanced battery technology for applications ranging from industrial use to utility-scale power.
Our top ten picks offer a snapshot of a much larger movement. Founders are building everything from new hardware to AI platforms that make our grid smarter.
Many of these companies are young, yet together they have raised tens of billions of dollars. Here is a look at the other startups defining the energy sector in 2026.
| Startup | Main Industry | Year Founded | Amount Raised | Last Funding Round |
|---|---|---|---|---|
| Energy | 2019 | $218.8M | Series C | |
| Hardware | 2021 | $39M | Series A | |
| Hardware | 2018 | $15.4M | Series A | |
| Hardware | 2015 | $1.2B | Series D | |
| Hardware | 2019 | $24.1M | Product Crowdfunding | |
| AI | 2024 | $41.5M | Corporate Round | |
| AgTech | 2013 | $157.6M | Venture Round | |
| Energy | 2010 | $813M | Series F | |
| Mobility | 2016 | $90.2M | Venture Round | |
| Energy | 2002 | $392M | Venture Round | |
| Energy | 1998 | $15.2B | Secondary Market | |
| Energy | 2007 | $2.4B | Debt Financing | |
| Energy | 2018 | $229.8M | Series B | |
| Energy | 2020 | $64M | Series B | |
| Energy | 2016 | $26.6M | Series C | |
| Biotech | 2021 | $54.1M | Series B | |
| Energy | 2017 | $18.2M | — | |
| Energy | 2019 | $25.4M | Seed | |
| Energy | 2022 | $1.9B | Debt Financing | |
| Energy | 2023 | $46.3M | Series A | |
| AgTech | 2018 | $90.9M | Series B | |
| Hardware | 2020 | $30.3M | Grant | |
| Energy | 2017 | $3.5B | Undisclosed | |
| Energy | 2023 | $95M | Venture Round | |
| Energy | 2013 | $106.6M | Venture Round | |
| Energy | 2016 | $55.6M | Venture Round | |
| Energy | 2023 | $196.5M | Series A | |
| Energy | 2022 | $100.7M | Venture Round | |
| Hardware | 2021 | $240M | Series D | |
| Mobility | 2021 | $103M | Private Equity | |
| Hardware | 2013 | £13.8M | Grant | |
| Environment | 2022 | $93.6M | Grant | |
| Energy | 2020 | $867M | Undisclosed | |
| Energy | 2019 | ¥22.3B | Debt Financing | |
| Energy | 2020 | $299.5M | Series B | |
| Fintech | 2003 | $1.2B | Debt Financing | |
| AI | 2021 | $13M | Series A | |
| AI | 2025 | $850k | Seed | |
| Energy | 1986 | $1.5B | Debt Financing | |
| Mobility | 2009 | $310.8M | Undisclosed | |
| Fintech | 2017 | $39.1M | Debt Financing | |
| Energy | 1981 | $1B | Debt Financing | |
| Manufacturing | 2007 | $175.5M | Venture Round | |
| Manufacturing | 2013 | $240M | Debt Financing | |
| Energy | 2021 | $20M | Series A | |
| Energy | 2015 | $76.8M | Series B | |
| Hardware | 2021 | $157M | Debt Financing | |
| Environment | 2007 | $329.3M | Series D | |
| Energy | 2016 | $67.5M | Corporate Round | |
| Energy | 2020 | $298.3M | Venture Round | |
| Mobility | 2016 | $100M | Series C | |
| Hardware | 2012 | $352.6M | Venture Round | |
| Mobility | 2016 | $450.7M | Grant | |
| Energy | 2004 | $15.4B | Debt Financing | |
| Retail | 1886 | $100M | Grant | |
| Mobility | 2018 | $130M | Venture Round | |
| Energy | 2019 | $1.5B | Debt Financing | |
| Energy | 2017 | $60.1M | Series B | |
| Hardware | 2016 | $320M | Undisclosed | |
| Manufacturing | 2009 | $130.1M | Venture Round | |
| Energy | 2023 | $65M | Series A | |
| Environment | 2021 | $7M | Grant | |
| Energy | 2017 | $210M | Venture Round | |
| Analytics | 2011 | $100.7M | Venture Round | |
| Hardware | 2020 | $113.6M | Venture Round | |
| Energy | 2017 | $551.5M | Private Equity | |
| Energy | 2016 | $66.1M | Series C | |
| Energy | — | $557.7M | Debt Financing | |
| Hardware | 2018 | $124.9M | Series C | |
| Environment | 2007 | $505.3M | Grant | |
| Energy | 2021 | $151.7M | Debt Financing | |
| Energy | 2015 | A$57.7M | Grant | |
| Energy | 2012 | $151.7M | Series A | |
| Energy | 2017 | $991.6M | Debt Financing | |
| Hardware | 2017 | $1.6B | Debt Financing | |
| Hardware | 2020 | $61.5M | Grant | |
| Manufacturing | 2015 | $1.8B | Secondary Market | |
| Analytics | 2016 | $139.6M | Series D | |
| Energy | 2021 | $11M | Grant | |
| Hardware | 2010 | $184.8M | Series H | |
| Energy | 2024 | $50M | Series A | |
| Energy | 2000 | $2.6B | Debt Financing | |
| Enterprise | 2001 | $10.5B | Debt Financing | |
| Energy | 2010 | $2.3B | Debt Financing | |
| Energy | 2020 | $9M | Seed | |
| Manufacturing | 2022 | $7M | Seed | |
| Energy | 2014 | $39.1M | Series A | |
| Energy | 2019 | $480M | Corporate Round | |
| Energy | 2011 | $489.2M | Private Equity | |
| Manufacturing | 2018 | $649.5M | Equity Crowdfunding |
