Top Energy Storage Startups in 2026

Pacifico Energy (“Pacifico” and formerly “Pacifico Power”) is a forward-looking energy infrastructure platform that delivers customized industrial-scale energy solutions to data centers, companies and communities looking to quickly secure reliable and affordable electricity. Pacifico develops, constructs, operates, finances and invests in prime generation (microgrid) and distributed generation energy projects—which help data centers, commercial & industrial companies, and communities become less reliant on utility companies for electricity. Pacifico is backed by the Pacifico Energy Group, which has significant ownership stakes in energy development companies around the world, including Japan’s largest solar developer.

Ultracapacitors with * 4x higher power density * 2x higher energy density than any competitor. This means we lower the costs 50-80% by using less materials, while at the same time offering our customers 2-4x smaller and lighter devices. This will solve crucial energy storage problems by re-generating energy, that would otherwise be lost, or providing peak or backup power in transportation, renewable energy, power quality and industrial sectors. Technology based on patented materials.

Polaron is a startup specializing in AI-driven materials design. The company focuses on accelerating the development of advanced materials for applications such as batteries, wind turbines, and other climate-critical technologies. Its machine learning algorithms leverage image data to characterize and optimize materials faster and more accurately than ever before. Polaron's platform employs generative AI algorithms trained on microstructural image data to model the intricate relationships between manufacturing processes, material structures, and performance outcomes.

Governments have had a harder time adapting to new technologies than businesses have. There are many ways that the public sector can improve the way it serves its citizens by using newer technologies and models. Smart city implementation is no longer a myth with cities like NEOM spending more than $1 trillion dollar is practical proof of traction. However what about cities that lack pockets and tight budgets implement smart city services? Trac is on a mission to change the way smart cities are defined by offering the CITY AS A SERVICE PLATFORM. We are the first to develop and deploy a plug-n-play microservice model of core municipal services through digital platforms that are data-driven and accessible via personal devices. Through this, we want to dissolve traditional tensions between residents and cities and improve sustainable-driven urban quality of life with the low-cost model.

The Vue is the Smart Home Energy Management Solution that provides 24/7 monitoring of home energy, appliances, heating and AC. The Vue home energy monitoring system gives homeowners insight and assurance by preventing costly repairs, making homes more energy efficient, and saving you money in the process.

We believe there is a better, less expensive, cleaner way for families to power their homes. As a pioneer of solar-as-a-service model, we are truly saving the planet, one solar panel at a time. We have long-established relationships with some of the nation’s largest and most trusted national retailers which provide us with a great platform for driving further awareness and brand recognition. Quick Facts: -Sunrun is the nations leader in Residential Solar! -Every 5 minutes we install a new project, and each day over $2 million worth of solar -We have over 200,000 customers and over 4,000 employees -We operate in 23 states and still growing!

We exist to to accelerate the monumental shift away from the supersystem of extraction, processing, and burning of fossil fuels - toward lightweight capture and consumption from entirely renewable sources. While decarbonization seems to be beyond our horizon, we remain undaunted; the long arc of energy consumption must bend toward sustainability. We believe in energy from renewable sources seamlessly integrated into everyday life. The future is silent, efficient, zero emission, flexible, distributed, and clean.

Anthro is reimagining energy storage for the future. They are an advanced materials company working on solutions to some of the most pressing issues confronting the battery-powered electrified future. The ruggedized batteries will safely enable an electrified future tomorrow. They are to be backed by world-class investors and a variety of government grants.

Coreshell Technologies is accelerating the world’s transition to electric transportation and renewable energy by solving the key degradation issue in rechargeable batteries. Their breakthrough nanolayer thin-film coating technology protects batteries from degrading chemical reactions and is uniquely capable of seamlessly fitting into existing manufacturing while producing the step change needed in the capacity, safety, and cost of batteries.

REbound’s refrigeration cycle provides -35C cooling to commercial freezer environments while consuming 40% less electricity than conventional vapor compression systems. Leveraging a patent-pending freeze suppression technique, REbound’s highly efficient cycle enables implementation of safer, near ambient refrigerants at a 2-year payback thus disrupting the energy-intensive vapor compression industry and capitalizing on the $1.6B commercial refrigeration equipment market.