Top 38 Solar Energy startups in USA
Apr 05, 2026
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34
1
Funding: $20.2B
Tesla is Elon Musk's automotive and clean energy company. It develops and manufactures popular electric vehicles, home energy storage systems, solar panels, solar roof tiles and related products and services for residential and industrial customers. Tesla sources its car and home batteries (Powerwall) from three suppliers: CATL, LG Energy Solution and Panasonic, the latter of which has located part of its battery production at the Tesla Gigafactory Nevada. Tesla is also currently expanding its own battery production capacity. Tesla also manufactures Tesla Solar Roof and Tesla Solar Inverter, while regular solar panels it buys from other companies. For larger customers Tesla provides an online platform that enables automated real-time demand forecasting and energy management, as well as a comprehensive Megapack energy storage system. For residential customers, the company operates a virtual energy company in Texas called Tesla Electric which controls the network of Powerwalls.
Tesla is Elon Musk's automotive and clean energy company. It develops and manufactures popular electric vehicles, home energy storage systems, solar panels, solar roof tiles and related products and services for residential and industrial customers. Tesla sources its car and home batteries (Powerwall) from three suppliers: CATL, LG Energy Solution and Panasonic, the latter of which has located part of its battery production at the Tesla Gigafactory Nevada. Tesla is also currently expanding its own battery production capacity. Tesla also manufactures Tesla Solar Roof and Tesla Solar Inverter, while regular solar panels it buys from other companies. For larger customers Tesla provides an online platform that enables automated real-time demand forecasting and energy management, as well as a comprehensive Megapack energy storage system. For residential customers, the company operates a virtual energy company in Texas called Tesla Electric which controls the network of Powerwalls.
2
Funding: $4.9B
Recurrent Energy, a subsidiary of Canadian Solar Inc. (global renewable energy company) that is building one of the world's largest and most geographically diversified platforms for developing, owning and operating solar and energy storage projects. It is a leading global developer, owner and operator of solar and energy storage systems, with over 14 GW of project capacity under long-term operation and maintenance agreements.
Recurrent Energy, a subsidiary of Canadian Solar Inc. (global renewable energy company) that is building one of the world's largest and most geographically diversified platforms for developing, owning and operating solar and energy storage projects. It is a leading global developer, owner and operator of solar and energy storage systems, with over 14 GW of project capacity under long-term operation and maintenance agreements.
3
Funding: $3.2B
Sunnova provides low-cost solar power to homes. It owns the equipment, installs it, and also eventually sells the electricity it creates to customers.
Sunnova provides low-cost solar power to homes. It owns the equipment, installs it, and also eventually sells the electricity it creates to customers.
5
Funding: $2.1B
Silicon Ranch developer, owner and operator of solar energy facilities in US.
Silicon Ranch developer, owner and operator of solar energy facilities in US.
6
Funding: $2B
Pine Gate Renewables is a U.S. developer of 2-25 MW utility-scale solar farms.
Pine Gate Renewables is a U.S. developer of 2-25 MW utility-scale solar farms.
7
Funding: $1.2B
Nextracker creates smart solartracker solutions that improve the performance of solar PV plants.
Nextracker creates smart solartracker solutions that improve the performance of solar PV plants.
8
Funding: $1.1B
Longroad Energy builds and acquires wind and solar power plants in USA. The company operates over 75 large-scale projects of approximately 25 GW, including remote monitoring, asset management, on-site technical support and full back-office support. Its real estate and development experts acquire leases, options, easements, mineral rights and title insurance necessary for the construction and operation of solar, wind, and energy storage farms.
Longroad Energy builds and acquires wind and solar power plants in USA. The company operates over 75 large-scale projects of approximately 25 GW, including remote monitoring, asset management, on-site technical support and full back-office support. Its real estate and development experts acquire leases, options, easements, mineral rights and title insurance necessary for the construction and operation of solar, wind, and energy storage farms.
9
Funding: $523.5M
Aurora Solar is a SaaS company that uses aerial imagery to assess solar installation projects.
Aurora Solar is a SaaS company that uses aerial imagery to assess solar installation projects.
10
Funding: $466.6M
SoloPower is a producer of thin-film photovoltaic cells and modules that help solar electricity generation and adapt to virtually limitless site-specific applications.
SoloPower is a producer of thin-film photovoltaic cells and modules that help solar electricity generation and adapt to virtually limitless site-specific applications.
11
Funding: $205M
Terabase Energy is a web-based tool that reduces cost and deployment timelines by digitalizing the solar power plant.
Terabase Energy is a web-based tool that reduces cost and deployment timelines by digitalizing the solar power plant.
13
Funding: $169.2M
Omnidian is a provider of comprehensive protection plans for investments in residential and commercial solar energy systems.
Omnidian is a provider of comprehensive protection plans for investments in residential and commercial solar energy systems.
15
Funding: $80.3M
ConnectDER make products that integrate power and data from residential scale DERs into the grid.
ConnectDER make products that integrate power and data from residential scale DERs into the grid.
16
Funding: $75M
Ubiquitous Energy is developing a special kind of “solar glass” designed to convert sunlight into electricity, minus the traditional photovoltaic panels.
Ubiquitous Energy is developing a special kind of “solar glass” designed to convert sunlight into electricity, minus the traditional photovoltaic panels.
17
Funding: $62.2M
Raptor Maps' AI-powered software makes enables companies to inspect, analyze, and optimize their solar assets. Raptor Maps is a global leader in solar software and aerial inspections with over 20 GW of PV assets analyzed.
Raptor Maps' AI-powered software makes enables companies to inspect, analyze, and optimize their solar assets. Raptor Maps is a global leader in solar software and aerial inspections with over 20 GW of PV assets analyzed.
18
Funding: $50.4M
Swift Solar is developing lightweight, flexible, and highly efficient solar panels based on perovskite tandem semiconductors. The company says it has improved perovskite stability by >100x: it's cells can operate over 3,000+ hours with no degradation. Swift's intellectual actives include unique patent-protected solar cell materials, architectures and manufacturing processes for high-performance and stable perovskite products. The company has own manufacturing facility in the USA
Swift Solar is developing lightweight, flexible, and highly efficient solar panels based on perovskite tandem semiconductors. The company says it has improved perovskite stability by >100x: it's cells can operate over 3,000+ hours with no degradation. Swift's intellectual actives include unique patent-protected solar cell materials, architectures and manufacturing processes for high-performance and stable perovskite products. The company has own manufacturing facility in the USA
19
Funding: $50M
ComboCurve is a Fintech business that focuses on good predictions and cash flow analysis in the energy sector.
ComboCurve is a Fintech business that focuses on good predictions and cash flow analysis in the energy sector.
20
Funding: $33.6M
Planted Solar is a solar power plant development startup, that is shaking up the solar industry by using robots and specialized modeling software to speed up deployment.
Planted Solar is a solar power plant development startup, that is shaking up the solar industry by using robots and specialized modeling software to speed up deployment.
21
Funding: $31M
Merlin develops novel solar panels that are significantly lighter than a typical glass panels and their flexible nature changes how and where they can be installed. The panels come with an adhesive on the pack, so they can be attached to surfaces just like a child’s sticker.
Merlin develops novel solar panels that are significantly lighter than a typical glass panels and their flexible nature changes how and where they can be installed. The panels come with an adhesive on the pack, so they can be attached to surfaces just like a child’s sticker.
22
Funding: $11.4M
Energetic Insurance unlocks solar financing for unrated or below investment grade organizations.
Energetic Insurance unlocks solar financing for unrated or below investment grade organizations.
23
AES Distributed Energy builds solar power plants with energy storage for commercial and residential customers. The company provides a full range of services, including design and energy efficiency consulting, permitting, plant construction, solar panel installation, commissioning, grid connection, and system monitoring. Most installations take just a few days. Customers can track solar energy production and see savings in real time.
24
Funding: $10M
New Columbia Solar is transforming how communities across the District of Columbia are powered
New Columbia Solar is transforming how communities across the District of Columbia are powered
25
Funding: $7.1M
SenseHawk is a SaaS platform that helps improve processes and saves cost in the development, construction, and operation of solar sites.
SenseHawk is a SaaS platform that helps improve processes and saves cost in the development, construction, and operation of solar sites.
26
Funding: $5.5M
Janta Power creates vertical 3D solar systems that take up three times less land than traditional flat panels and capture more sunlight throughout the day. Each tower uses intelligent software that tracks sun's path from sunrise to sunset. By adjusting its position throughout the day, the system produces approximately 50% more energy while using only three times less land than flat panel systems. Janta towers are also durable. Each structure can withstand winds of up to 170 mph. The towers feature durable steel frames and modular foundations that simplify installation in a wide range of environments. Pilot Janta solar stations are already operating at several major airports around the world.
Janta Power creates vertical 3D solar systems that take up three times less land than traditional flat panels and capture more sunlight throughout the day. Each tower uses intelligent software that tracks sun's path from sunrise to sunset. By adjusting its position throughout the day, the system produces approximately 50% more energy while using only three times less land than flat panel systems. Janta towers are also durable. Each structure can withstand winds of up to 170 mph. The towers feature durable steel frames and modular foundations that simplify installation in a wide range of environments. Pilot Janta solar stations are already operating at several major airports around the world.
27
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.
28
Funding: $3.6M
Sesame Solar manufactures the world’s first 100% renewable mobile nanogrids that bring power to communities in <15 minutes.
Sesame Solar manufactures the world’s first 100% renewable mobile nanogrids that bring power to communities in <15 minutes.
29
Funding: $3M
Online bidding platform for residential solar buyers. Compare quotes from dozens of top solar companies.
Online bidding platform for residential solar buyers. Compare quotes from dozens of top solar companies.
30
Funding: $2.5M
BlueDot Photonics is committed to finding new ways to harvest, manipulate and transform light using unique materials and simple manufacturing techniques.
BlueDot Photonics is committed to finding new ways to harvest, manipulate and transform light using unique materials and simple manufacturing techniques.
32
HST Solar is expanding large scale solar globally by automating solar design and engineering through software while licensing their solution.
33
Funding: $120K
SolarFi provides solar-powered, transparent enclosure or pods for businesses, restaurants, municipalities and other groups. The enclosures come equipped with WiFi, heating and cooling.
SolarFi provides solar-powered, transparent enclosure or pods for businesses, restaurants, municipalities and other groups. The enclosures come equipped with WiFi, heating and cooling.
34
Funding: $25K
Point Load Power is an energy management instructor that provides solutions about energy uses and access to commercial and building owners. It is looking to create the market for rooftop trackers
Point Load Power is an energy management instructor that provides solutions about energy uses and access to commercial and building owners. It is looking to create the market for rooftop trackers
35
Funding: $20K
Icarus RT is creating a hybrid solar-thermal photovoltaic system that stores and uses leftover “waste heat” from solar panels to generate power on demand. This significantly increases power output per panel and lowers overall cost per kilowatt.
Icarus RT is creating a hybrid solar-thermal photovoltaic system that stores and uses leftover “waste heat” from solar panels to generate power on demand. This significantly increases power output per panel and lowers overall cost per kilowatt.
36
The World Climate Service provides long-range weather and climate forecasts to help energy trading organizations improve profitability while managing weather and climate risk.
37
Vroom Solar develops Smart Solar Management system. Our patent-pending control center converts sunlight to usable power with the flip of a switch – no battery or grid needed to produce power instantly.
38
Emergent Solar Energy is a commercial solar design and construction firm specializing in the Industrial, Agricultural and Municipal sectors.
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