Top 20 Clean (Renewable) Energy startups in USA
Dec 05, 2025
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22
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: $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.
3
Funding: $2.4B
Nexamp is bringing clean energy to homeowners and communities everywhere, and helping them save up to 10% on electricity costs without installing rooftop solar panels.
Nexamp is bringing clean energy to homeowners and communities everywhere, and helping them save up to 10% on electricity costs without installing rooftop solar panels.
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: $1.8B
energyRe is at the forefront of North America's energy transition. Building and delivering reliable clean power directly to where people live is not only our opportunity—it is our responsibility.
energyRe is at the forefront of North America's energy transition. Building and delivering reliable clean power directly to where people live is not only our opportunity—it is our responsibility.
7
Funding: $1.6B
Bright Night provides renewable power solutions in a safe and reliable way.
Bright Night provides renewable power solutions in a safe and reliable way.
8
Funding: $700M
AES Distributed Energy creates solar plus storage facilities, which includes systems that can hold and release solar energy at will.
AES Distributed Energy creates solar plus storage facilities, which includes systems that can hold and release solar energy at will.
9
Funding: $575.5M
Arcadia Power is a nationwide home energy platform providing clean energy and savings.
Arcadia Power is a nationwide home energy platform providing clean energy and savings.
10
Funding: $178.9M
Modern Energy is an energy asset management firm that invests in businesses that bring emerging energy technologies to market and the energy resources those businesses produce. From energy efficiency in the United States to solar projects in Brazil to virtual power plants in the United Kingdom, Modern supports leaders in the transition to a digital energy ecosystem.
Modern Energy is an energy asset management firm that invests in businesses that bring emerging energy technologies to market and the energy resources those businesses produce. From energy efficiency in the United States to solar projects in Brazil to virtual power plants in the United Kingdom, Modern supports leaders in the transition to a digital energy ecosystem.
11
Funding: $139.6M
LevelTen is the safest, most cost-effective way for C&I customers to purchase renewable energy.
LevelTen is the safest, most cost-effective way for C&I customers to purchase renewable energy.
12
Funding: $52.7M
Cherry Street Energy operates as a renewable energy company. Its customers purchase solar power at a competitive rate. Each customer benefits from a comprehensive solar experience, as well as energy insights and analytics.
Cherry Street Energy operates as a renewable energy company. Its customers purchase solar power at a competitive rate. Each customer benefits from a comprehensive solar experience, as well as energy insights and analytics.
13
Funding: $50M
Accelergen Energy is a greenfield energy developer of utility-scale solar, solar plus storage and standalone storage projects
Accelergen Energy is a greenfield energy developer of utility-scale solar, solar plus storage and standalone storage projects
14
Funding: $39.1M
Odyssey Energy Solutions is an industry platform to simplify, streamline, and reduce the costs of developing and financing energy projects.
Odyssey Energy Solutions is an industry platform to simplify, streamline, and reduce the costs of developing and financing energy projects.
15
Funding: $16.6M
WattBuy aims to give households a simple platform to shop for an electricity provider in states where that is an option. Users are able to upload their electricity usage and compare available plans to save money or buy electricity from a solar or wind energy provider.
WattBuy aims to give households a simple platform to shop for an electricity provider in states where that is an option. Users are able to upload their electricity usage and compare available plans to save money or buy electricity from a solar or wind energy provider.
17
Funding: $11.8M
Evergreen creates a marketplace for clean energy projects that ensures and quantifies the impact of every Renewable Energy Certificate.
Evergreen creates a marketplace for clean energy projects that ensures and quantifies the impact of every Renewable Energy Certificate.
18
Funding: $6.9M
GoSun designed a breakthrough technology that allows people to enjoy outdoor gear without having to worry about carbon-emitting power generators. GoSun sells solar ovens, portable fridges, lighting, charging, water purification, tiny houses and power generators.
GoSun designed a breakthrough technology that allows people to enjoy outdoor gear without having to worry about carbon-emitting power generators. GoSun sells solar ovens, portable fridges, lighting, charging, water purification, tiny houses and power generators.
19
Funding: $6M
Syrcuit Energy Solutions is providing carbon free energy solutions to landowners, commercial and industrial businesses, and agriculture clients.
Syrcuit Energy Solutions is providing carbon free energy solutions to landowners, commercial and industrial businesses, and agriculture clients.
20
Funding: $6M
WattCarbon is building the world's first decarbonization procurement platform for accelerating the energy transition.
WattCarbon is building the world's first decarbonization procurement platform for accelerating the energy transition.
