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Top 100 Smart (Energy-Efficient) Home startups
Nov 01, 2025 | By Alexander Gillet | 29 |
These startups develop smart thermostats, solar systems, smart HVAC and lighting, residential energy storage systems and other energy-saving home technologies.
1
Country: USA | Funding: $4M
Pila Energy develops innovative battery systems and software to provide energy security and energy management for homes and businesses.
Pila Energy develops innovative battery systems and software to provide energy security and energy management for homes and businesses.
2
Country: USA | Funding: $174.5M
Dandelion is an Alphabet spinout that develops geothermal heating, air-conditioning and cooling systems
Dandelion is an Alphabet spinout that develops geothermal heating, air-conditioning and cooling systems
3
Country: USA | Funding: $1.2B
Base Power is a modern power firm for the electric era that has built a reliable and affordable residential energy service.
Base Power is a modern power firm for the electric era that has built a reliable and affordable residential energy service.
4
Country: Germany | Funding: €652M
1Komma5° is aiming to offer households everything needed for a carbon neutral home, including energy storage, charging infrastructure for electric vehicles and solar.
1Komma5° is aiming to offer households everything needed for a carbon neutral home, including energy storage, charging infrastructure for electric vehicles and solar.
5
Country: USA | Funding: $582M
Swell is a residential energy storage developer and aggregator.
Swell is a residential energy storage developer and aggregator.
6
Country: UK | Funding: $468.9M
Hometree operates as an online-led boiler installation company.
Hometree operates as an online-led boiler installation company.
7
Country: Israel | Funding: $454.8M
SolarEdge Technologies, global leader in the DC power optimizer market. SolarEdge developed the DC optimized inverter solution that changed the way power is harvested and managed in photovoltaic (PV) systems. The SolarEdge intelligent inverter solution maximizes power generation while lowering the cost of energy produced by the PV system, for improved RoI.
SolarEdge Technologies, global leader in the DC power optimizer market. SolarEdge developed the DC optimized inverter solution that changed the way power is harvested and managed in photovoltaic (PV) systems. The SolarEdge intelligent inverter solution maximizes power generation while lowering the cost of energy produced by the PV system, for improved RoI.
8
Country: USA | Funding: $300M
Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner, and our energy more safe, secure and reliable for all.
Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner, and our energy more safe, secure and reliable for all.
9
Country: Germany | Funding: $250.1M
Tado° offers smart thermostats and apps that adjusts to the real-time behavior of residents in private homes and small businesses.
Tado° offers smart thermostats and apps that adjusts to the real-time behavior of residents in private homes and small businesses.
10
Country: USA | Funding: $230.3M
SPAN develops smart electrical panels that unlock whole-home, room and appliance energy data designed to lower your energy bill.
SPAN develops smart electrical panels that unlock whole-home, room and appliance energy data designed to lower your energy bill.
11
Country: UK | Funding: $215M
BBOXX designs, manufactures, and distributes plug and play solar systems. It also offers pay-as-you-go solar power. BBOXX Power DC product range is closed DC systems in standardised sizes. BBOXX Hub brings the smart capabilities of remote monitoring and control to larger capacity systems and projects. BBOXX Pulse is a comprehensive management platform that enables growth of next generation utility businesses.
BBOXX designs, manufactures, and distributes plug and play solar systems. It also offers pay-as-you-go solar power. BBOXX Power DC product range is closed DC systems in standardised sizes. BBOXX Hub brings the smart capabilities of remote monitoring and control to larger capacity systems and projects. BBOXX Pulse is a comprehensive management platform that enables growth of next generation utility businesses.
12
Country: USA | Funding: $182.3M
Aquion Energy is a company that manufactures sodium ion batteries and energy storage systems.
Aquion Energy is a company that manufactures sodium ion batteries and energy storage systems.
13
Country: Sweden | Funding: $181.2M
Tibber provides energy consumer services and learns to buy, save, and control electricity for homes. Stockholm wants to replace the original power company with an app to help you reduce your own electricity bill.
Tibber provides energy consumer services and learns to buy, save, and control electricity for homes. Stockholm wants to replace the original power company with an app to help you reduce your own electricity bill.
14
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.
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.
15
Country: USA | Funding: $174.5M
Atom Power built the world’s first and only true solid-state circuit breaker. Using semiconductors to control the current digitally, this breakthrough unlocks a future where power is smartly controlled and exponentially safer.
Atom Power built the world’s first and only true solid-state circuit breaker. Using semiconductors to control the current digitally, this breakthrough unlocks a future where power is smartly controlled and exponentially safer.
16
Country: Germany | Funding: $169.2M
Sonnen is a German-based pioneer for intelligent lithium based energy storage. The sonnenBatterie is not just a battery, it's an intelligent storage system that automatically adjusts the energy usage in your household. In combination with solar panels the sonnenBatterie will enable you to supply yourself with clean energy – thus making you independent and protecting you from energy price hikes.
Sonnen is a German-based pioneer for intelligent lithium based energy storage. The sonnenBatterie is not just a battery, it's an intelligent storage system that automatically adjusts the energy usage in your household. In combination with solar panels the sonnenBatterie will enable you to supply yourself with clean energy – thus making you independent and protecting you from energy price hikes.
17
Country: USA | Funding: $153.8M
Mighty Buildings is a developer of 3D printing technology and automation platform that makes housing more affordable for customers.
Mighty Buildings is a developer of 3D printing technology and automation platform that makes housing more affordable for customers.
18
Country: Canada | Funding: $149.4M
Ecobee is a provider of Wi-Fi enabled smart thermostats comes with Amazon's Alexa voice assistant built in for residential and commercial applications.
Ecobee is a provider of Wi-Fi enabled smart thermostats comes with Amazon's Alexa voice assistant built in for residential and commercial applications.
19
Country: Canada | Funding: $145M
dcbel offers AI-driven sustainable technologies which enable people to leverage solar energy to power their cars, homes, and lifestyles.
dcbel offers AI-driven sustainable technologies which enable people to leverage solar energy to power their cars, homes, and lifestyles.
20
Country: Sweden | Funding: $121.4M
Cloover partners with renewable energy professionals to simplify and finance sustainable home upgrades, offering embedded financing options for technologies like solar panels, battery storage, heat pumps, and EV charging systems.
Cloover partners with renewable energy professionals to simplify and finance sustainable home upgrades, offering embedded financing options for technologies like solar panels, battery storage, heat pumps, and EV charging systems.
