Top 55 Energy Saving startups

Sep 23, 2025 | By Alexander Gillet

These startups develop energy saving technologies, such as smart thermostats, LED lighting, building automation systems, energy-efficient HVAC systems, solar photovoltaic panels, battery energy storage, heat recovery systems, etc.
1
Country: Sweden | Funding: $18M
Emulate provides SaaS for utilities to offer behind-the-meter services and optimize demand flexibility with virtual battery technology.
2
Country: USA | Funding: $28M
Sapphire Technologies develops, manufactures, and sells energy recovery systems for both natural gas and hydrogen industrial applications.
3
Country: Netherlands | Funding: €9M
Tibo Energy is an energy management company that offers an Energy Management System to eliminate grid congestion and optimize energy use.
4
Country: Sweden | Funding: $10.9B
H2 Green Steel operates a steel production plant to accelerate the decarbonization of the steel industry using green energy.
5
Country: USA | Funding: $575.5M
Arcadia Power is a nationwide home energy platform providing clean energy and savings.
6
Country: USA | Funding: $491.5M
Turntide‘s Smart Motor System optimizes motor energy use and helps eliminate mechanical issues.
7
Country: USA | Funding: $443.5M
Electra is decarbonizing the steel industry by reducing power consumption of electric arc furnaces. It allows to start and stop production on demand and uses the lowest-cost, intermittent renewable electricity to reduce energy costs.
8
Country: USA | Funding: $403.7M
Boston Metal is a metals production company that develops an electric-powered tech to decarbonize steelmaking and metal production.
9
Country: USA | Funding: $382M
Budderfly is an energy management company with devices that measure and report on all elements of energy use.
10
Country: Ireland | Funding: €224M
Urban Volt is an energy-saving LED lighting firm. They retrofit commercial premises with LED lighting for no upfront cost. Their unique Light as a Service business model allows our clients to enjoy cash and energy savings from the moment of installation.
11
Country: USA | Funding: $174.6M
Sense is offering home owners better insight into their energy usage levels, so they can adjust accordingly. The tech, which relies on AI/ML, works with smart meters from companies like Landis+Gyr and Schneider Electric.
12
Country: USA | Funding: $133M
Viridi, which operates through Green Machine Equipment and Volta Energy Products, builds renewable energy products and systems that substitute for fossil fuel, lead-acid batteries and other older technology.
13
Country: USA | Funding: $119M
Aeroseal seals both air ducts and building envelopes so you waste less energy and reduce your bill
14
Country: USA | Funding: $108.3M
GoExpedi is a platform for the oil and gas industry to more efficiently procure critical parts and supplies
15
Country: USA | Funding: $97.5M
Sealed covers the upfront costs to install energy-saving upgrades like insulation, smart tech, and HVAC to make your house feel like new.
16
Country: France | Funding: €52.5M
METRON's unique AI, supported by Machine Learning and ontologies, is fully context-aware and provides unrivaled insight into energy usage. METRON-EVA, the "Energy Virtual Assistant", collaborates with experts on energy intelligence strategies.
17
Country: Netherlands | Funding: €43M
Sensorfact offers smart energy savings in the manufacturing industry.
18
Country: Colombia | Funding: $45M
Bia is an energy trader that will initially focus on businesses in Colombia, offering them smart meters and a consumption analysis platform with real-time analytics. The startup claims to reduce consumption by analyzing data directly from a mobile application and that an average user could save up to 10% on their energy bill each month with these measurements.
19
Country: USA | Funding: $25.9M
AeroShield Materials is creating thermally insulating transparent inserts. The inserts are only four millimeters of AeroShield's material and, when placed inside a double-pane window, provides 65 percent more energy efficiency.
20
Country: Israel | Funding: $22.5M
CaPow offers a solution that brings perpetual power to automated robotics fleets.
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com