Top 32 Smart (Energy-Efficient) Home startups in USA
Apr 07, 2026
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31
1
Funding: $4M
HomeBoost offers a do-it-yourself energy assessment system that helps homeowners identify leaky windows and find rebate opportunities and other ways to cut their energy bills. It ships to homeowners custom hardware that, coupled with a smartphone app, scans the home and then home energy experts review and produce the report.
HomeBoost offers a do-it-yourself energy assessment system that helps homeowners identify leaky windows and find rebate opportunities and other ways to cut their energy bills. It ships to homeowners custom hardware that, coupled with a smartphone app, scans the home and then home energy experts review and produce the report.
2
Solatube develops system for bringing natural daylight into buildings. Its tubular daylighting device (TDD) is a compact and airtight alternative to traditional skylights, minimizing glare and solar heat gain. Solatube's tubular daylighting systems are modular and can be installed in hard-to-reach spaces and rooms, bypassing obstacles that skylights and windows simply cannot reach. They also provide ventilation and beautifully illuminate interiors, improve productivity and well-being, and reduce energy costs. Solatube provides a full range of consulting services for commercial properties, from design to installation, and is developing global distribution in over 100 countries. Acquired by Kingspan Light & Air USA
3
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.
5
Funding: $532M
Lunar Energy manufactures battery storage systems and installs solar panels for homeowners in California, Georgia, and Washington. Lunar can use its fleet of batteries, available in 15- and 30-kilowatt-hour modules, to feed power into the grid as needed. Its virtual power plant (VPP) software can also manage electric vehicle chargers and appliances, allowing for simultaneous power supply and demand reduction. Lunar helps users save money - each day, the app creates a unique plan for maximum energy savings. The company monitors the weather, monitors power consumption spikes, such as when charging your electric vehicle and uses this data to develop this personalized daily plan. Lunar AI tracks rapidly changing energy prices, optimizing and automating home power system to reduce bills.
Lunar Energy manufactures battery storage systems and installs solar panels for homeowners in California, Georgia, and Washington. Lunar can use its fleet of batteries, available in 15- and 30-kilowatt-hour modules, to feed power into the grid as needed. Its virtual power plant (VPP) software can also manage electric vehicle chargers and appliances, allowing for simultaneous power supply and demand reduction. Lunar helps users save money - each day, the app creates a unique plan for maximum energy savings. The company monitors the weather, monitors power consumption spikes, such as when charging your electric vehicle and uses this data to develop this personalized daily plan. Lunar AI tracks rapidly changing energy prices, optimizing and automating home power system to reduce bills.
6
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.
7
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.
8
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.
9
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.
10
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
11
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.
12
Funding: $119M
Aeroseal seals both air ducts and building envelopes so you waste less energy and reduce your bill
Aeroseal seals both air ducts and building envelopes so you waste less energy and reduce your bill
14
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.
Sealed covers the upfront costs to install energy-saving upgrades like insulation, smart tech, and HVAC to make your house feel like new.
15
Funding: $62M
Quilt produces ductless, dual-zone home heat pumps controlled by artificial intelligence. Quilt's indoor and outdoor units, Dial and mobile app work together to create intelligent home climate control solution. To compete with established players in the heat pump market, the company has focused on software and design. One example is the over-the-air update it has implemented for existing heat pumps - the new firmware improved unit performance by over 20%. Ductless systems ensure a consistent temperature in every room. Quilt is even more efficient thanks to the Auto-Away feature, which uses smart sensors to save energy when rooms are unoccupied. Installation is simple and quick, like other ductless systems and most modern systems are currently in production. The company is building a network of certified installation partners.
Quilt produces ductless, dual-zone home heat pumps controlled by artificial intelligence. Quilt's indoor and outdoor units, Dial and mobile app work together to create intelligent home climate control solution. To compete with established players in the heat pump market, the company has focused on software and design. One example is the over-the-air update it has implemented for existing heat pumps - the new firmware improved unit performance by over 20%. Ductless systems ensure a consistent temperature in every room. Quilt is even more efficient thanks to the Auto-Away feature, which uses smart sensors to save energy when rooms are unoccupied. Installation is simple and quick, like other ductless systems and most modern systems are currently in production. The company is building a network of certified installation partners.
16
Funding: $33.1M
EnergyHub is the consumer face of the Smart Grid, helping home owners reduce energy consumption and save money. EnergyHub produces smart, simple, and cost-effective energy management tools that strengthen the relationship between consumers and utilities and solve the energy problems of today and tomorrow.
EnergyHub is the consumer face of the Smart Grid, helping home owners reduce energy consumption and save money. EnergyHub produces smart, simple, and cost-effective energy management tools that strengthen the relationship between consumers and utilities and solve the energy problems of today and tomorrow.
17
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.
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.
18
Funding: $25M
Franklin Whole Home has developed an integrated battery and control system with artificial intelligence. It is inverter-agnostic, can be used to charge electric-vehicle batteries, and turns homes into microgrids when utility services are down.
Franklin Whole Home has developed an integrated battery and control system with artificial intelligence. It is inverter-agnostic, can be used to charge electric-vehicle batteries, and turns homes into microgrids when utility services are down.
19
Funding: $15.7M
Zendure is the most durable external battery you can find for your everyday life. Works with most USB powered devices.
Zendure is the most durable external battery you can find for your everyday life. Works with most USB powered devices.
20
Funding: $16.3M
LIFX is the creator of Wi Fi-enable, multi-colored LED lights controllable via a smart device.
LIFX is the creator of Wi Fi-enable, multi-colored LED lights controllable via a smart device.
21
Funding: $11.2M
Haven Energy a climate technology firm that is hastening the adoption of home battery systems
Haven Energy a climate technology firm that is hastening the adoption of home battery systems
22
Funding: $10.1M
Vantem Global streamlines the construction process, lowering costs and shortening delivery times.
Vantem Global streamlines the construction process, lowering costs and shortening delivery times.
24
Funding: $9M
Arbor is a home energy advisor that helps you automatically lower your electric rate on an ongoing basis.
Arbor is a home energy advisor that helps you automatically lower your electric rate on an ongoing basis.
25
Funding: $4M
YouSolar creates PowerBloc - a full-integrated nano-grid. A nano-grid is a modular power system that typically comprises a solar array, a battery, and an inverter that forms the grid for the house. However, PowerBloc can use and store energy also from the grid, a generator, or any other power source.
YouSolar creates PowerBloc - a full-integrated nano-grid. A nano-grid is a modular power system that typically comprises a solar array, a battery, and an inverter that forms the grid for the house. However, PowerBloc can use and store energy also from the grid, a generator, or any other power source.
26
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.
27
Funding: $1.7M
StorEn Technologies strives to bring proprietary real innovation to Vanadium Flow Batteries.
StorEn Technologies strives to bring proprietary real innovation to Vanadium Flow Batteries.
28
Funding: $1M
Balto Energy's software enables solar-led electrification as a path to achieving a net zero home, in which solar is installed first to maximize cost savings.
Balto Energy's software enables solar-led electrification as a path to achieving a net zero home, in which solar is installed first to maximize cost savings.
29
Funding: $1M
Breezi builds wireless devices that enable homeowners to detect problems with their HVAC systems before they become severe.
Breezi builds wireless devices that enable homeowners to detect problems with their HVAC systems before they become severe.
30
Funding: $150K
Akeptus provides a smart home energy management system that helps homeowners optimize their energy usage and reduce costs.
Akeptus provides a smart home energy management system that helps homeowners optimize their energy usage and reduce costs.
31
Cosmic is the first end-to-end platform for building and managing fully electric, autonomous-powered homes.
32
Emporia is an electrical company that specializes in smart homes technology systems such as energy monitors, smart plugs, and batteries.
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