Top Energy Efficiency Startups in 2026

Skyven Technologies is an Energy-as-a-Service company which funds and de-risks capital projects to reduce carbon emissions caused by process heat. It pursues industrial decarbonization with a tech-forward business model that aligns its revenue stream with its customers’ environmental and operational goals.

Powered through our Network Operations Center (NOC), Rodan’s Energy Intelligence Suite (EIS) enables energy teams across North America to make intelligent energy decisions, saving them resources, time, and money every day.

Adiabatic Technologies Pvt Ltd is an Indian energy company building battery systems, BMS, and chargers for the industries that won't accept downtime — robotics, defence, drones, MHE, AGV, and solar. Located in Ahmednagar, we specialize in both R&D and manufacturing of advanced energy storage solutions. We are a fast-growing team working on cutting-edge technology with real-world impact, driving sustainability, and enabling global hardware innovation from India.

Who We Are A Snapshot of Franklin Energy's Growth Hi, we're Franklin Energy. It's nice to meet you! Or maybe we've met before. After all, we have been around since 1994. We were built on the commercial and industrial sector, but over time, we've grown and welcomed new families into the fold. GoodCents expanded our demand response capabilities, PlanetEcosystems is responsible for our cutting-edge technology, and Build It Green is expanding our West Coast footprint while bringing innovation to residential programs in terms of healthy home initiatives and customer engagement. We've partnered with AM Conservation Group to provide a seamless delivery of products within our programs, and they also deliver efficiency education through their acquisition of Resource Action Programs.

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.

CleanSpark brings clean, sustainable energy solutions to institutional, commercial, industrial, and community scale customers by providing integration, installation, and operation/maintenance services for preferred technology partners and platforms.  Through its flagship clean energy enterprise platform, the flex Power System, CleanSpark offers an innovative array of energy solutions solutions that significantly reduce customers energy costs while providing the benefit of clean energy security. CleanSpark saves customers on energy costs.  CleanSpark brings power where previously unavailable.  

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!

VaCom Technologies is a nationally known energy efficiency contracting and technical consulting company specializing in refrigeration systems and industrial facilities. In business since 1992, VaCom's mission is to help our clients optimize the performance and efficiency of their facilities utilizing our capabilities in analysis, control and monitoring of refrigeration systems. Our project development and delivery approach emphasizes fundamentally sound engineering methods and state-of-the-art control technologies, supported by ongoing performance analysis using VaCom’s own EnergyDashboard™ service to provide clients with the greatest life-cycle value. We design projects that are energy efficient, cost effective, and environmentally sound.

Crux OCM is a venture capital backed seed stage start-up on a mission to enhance control room operations in the $87.5 trillion dollar per year oil and gas industry to enhance safety and efficiency through autonomous capabilities. Although we are a young company, our team is comprised of industry veterans that have already made their mark in control system, commissioning, and advanced process control. In two short years we have progressed from concept, to MVP, to commercial-scale POC ‘s. Our key short term KPI is to add new logos via facilitating additional POCs. Crux OCM was born with the belief that control room operators should have better tools to perform their daily jobs. Control room operations directly impact safety, environmental, and bottom line revenue for energy operating companies. We thought, if pilots have auto-pilot software - why don’t control room operators? We are proud to help operating energy companies control rooms operate in the safest, most efficient way possi