These are the top renewable energy startups changing the world with advanced technology to make our renewable energy goals attainable >>
Renewable energy startups are increasing their presence across energy-dependent industries to reduce and eliminate the use of fossil fuels.
But more needs to be done if we intend to reach our net-zero carbon emission goals by 2050.
Serious investment in energy generation, storage, and technology is required to further bring down the costs of renewable energy.
New technologies and different renewable energy forms are increasing the clean energy portfolio, driven by some truly innovative and game-changing startups and the new technologies they’re using.
This article covers some of the top renewable energy startups to watch in 2026.
Let’s get started!
To begin, let’s examine the phrase “Renewable Energy Startups.”
Startups are typically young companies founded specifically to develop a unique product or service. Startups are rooted in innovation and new technologies that challenge or disrupt traditional methods of business within specific industries.
They intend to provide a product or service that addresses pertinent issues within their industry and makes it irreplaceable for consumers. Startups are frequently referred to as disruptors within their respective industries.
Renewable energy comes from renewable natural sources like wind, solar, hydroelectric, geothermal, hydrogen, biomass, and mechanical.
These energy sources are constantly being replenished and depend largely on technology to convert these sources into energy.
Capturing and storing renewable energy is challenging, but many renewable energy startup ideas provide practical solutions that work.
Fossil fuels, on the other hand, are non-renewable resources like coal, oil, and gas that are burned to produce energy but release harmful greenhouse gas emissions. Moving over to renewable energy is key to addressing the climate crisis.
The renewable energy sector has seen exceptional growth over the last decade and now constitutes about 17% of the total global energy consumption.
According to the Energy Information Administration, the use of renewable energy is expected to increase by 17% to 42 GW in 2026 and is projected to contribute to almost 25% of electricity generation.
In major renewable energy markets, the amount of curtailed generation is relatively low, typically ranging from 1.5% to 4%. By 2026, several European countries such as Spain, Germany, and Ireland are expected to achieve an annual contribution of over 40% from wind and solar PV.
According to the 2021 Tracking SGD7 Report, renewables are the most dynamic in the electricity sector, accounting for approximately 25% in 2018.
Many businesses have realized that their carbon footprint affects their bottom line. The more carbon neutral a business becomes, the more support that business attracts.
Curbing our reliance on fossil fuels is vital to curbing the climate crisis.
The agricultural sector in the U.S. consumes almost 1.9% of the total U.S. energy consumption, contributing to around 35% of the total greenhouse gas emissions in the agri-food industry.
The agricultural sector in the U.S. consumes almost 1.9% of the total U.S. energy consumption, contributing to around 35% of the total greenhouse gas emissions in the agri-food industry.
To date, much has been accomplished to transition the agricultural sector to clean energy. In addition, farms are a viable source of carbon-rich biomass.
New technologies allow clean energy to be generated from biomass while trapping the carbon in the process.
Check out this video by Green Mountain Energy on how agricultural biomass is used to create energy:
Phelas develops and builds Liquid Air Energy Storages (LAES) for wind and solar energy.
The company is in the process of prototyping Aurora, a unique, standardized, modular, mass-manufactured, and cheap large-scale electrical storage system.
Through their technological breakthrough, they aim to create a pathway towards a 24/7 renewable energy supply worldwide.
Their Aurora system uses a newly developed thermodynamic process to store energy.
The cryogenic liquid is heated and evaporated, creating a strong increase in volume and pressure that is used to generate electricity.
Aurora is designed to provide backup power independent from the grid and eliminates the need for Diesel backups.
They have also developed an optimization framework to provide precise storage specifications, hourly performance analysis, insightful sensitivity analysis, and more.
Phelas has raised a total of €600K in funding over 2 rounds, funded by 2 investors. Their latest funding was obtained on Feb 2, 2023, from a Non-equity Assistance round.
Epishine conducted in-depth research in organic electronics and photovoltaics to develop their breakthrough in printed indoor solar cell manufacturing.
These printed organic solar cells are scalable, resource-efficient, and affordable. and reduce the need for disposable batteries. Epishine is part of the European Union’s Life Program 2022.
Epishine’s indoor solar cells optimize energy in low-light indoor environments. The indoor solar cells are thin and flexible as they are printed on recyclable plastic.
This makes for easy integration into wireless products, where it converts light into electricity. These low-light solar cells can be used to power wireless sensors and similar devices.
Their evaluation kit combines solar cells with a supercapacitor and intelligent charging management to support various output voltages.
Funding: Epishine has raised a total of $12.5M in funding over 5 rounds. Their latest funding was raised on Jul 6, 2023, from a Venture – Series Unknown round.
Hydrogen One is a zero-pollution hydrogen fuel energy producer for use in industrial and commerce settings.
Their hydrogen technologies reduce CO2 emissions and improve air quality, which are primarily used in heating, power generation, and the transportation sectors.
Funding: Hydrogen One is an Article 9 Fund specific to entities that have sustainable investments as their objective. BusinessGreen reports that HydrogenOne Capital Growth seeks £250m fundraising in trail-blazing IPO.
Hydrogen One is a zero-pollution hydrogen fuel energy producer for use in industrial and commerce settings.
Their hydrogen technologies reduce CO2 emissions and improve air quality, which are primarily used in heating, power generation, and the transportation sectors.
Hydrogen One is an Article 9 Fund specific to entities that have sustainable investments as their objective. BusinessGreen reports that HydrogenOne Capital Growth seeks £250m fundraising in trail-blazing IPO.
New A.G.E. is a technology company with a portfolio of patented solutions. Their core focus is on alternative green energy solutions that include coal electrolysis, hydrogen, and rare earth element processing.
The company removes tons of buried toxic fly ash that leach mercury, arsenic, and sulfur into the groundwater and air. The waste is recycled to create clean, sustainable hydrogen power.
Their hydrogen/electric hybrid fueling stations are powered by Vodik’s processes for onsite green production with safe low-pressure storage.
Their patented technology allows for removing toxic waste from coal and generating hydrogen for clean energy.
In conjunction with Vodik, patented technologies are being developed for processing plants that will create zero-carbon hydrogen and 100x production capabilities.
The new plants will support the airline industry’s future demand for green hydrogen.
New Alternative Green Energy’s latest funding round was an Option/Warrant for $0,12M on October 28, 2020.
Celsius Energy has created a building energy solution that reduces a building’s carbon footprint by making energy accessible from the Earth.
They specialize in ground source heat pumps, renewable energy, sustainable heating and cooling, geo-energy, and more. The company was named one of the United Nation’s 50 Climate Leaders.
Celsius can reduce CO2 emissions from buildings with their ground source heat pump solution. This is achieved by combining and optimizing existing proven processes.
The geothermal energy system consists of three main elements: a closed, pyramid-shaped geothermal energy exchanger, a heat pump, and digital control.
It is capable of reducing a building’s energy consumption by up to 70%.
Celsius Energy has raised $488.5M over 3 funding rounds and is funded by 3 investors. Their latest funding was raised on Jun 1, 2021, from a post-IPO equity round.
