Energy Storage, Battery Storage, Battery Energy Storage, YSG Solar
January 12, 2021

Energy storage systems are becoming increasingly popular throughout the United States and, indeed, the entire world. Pairing energy storage with a renewable energy source like solar power makes energy generation more efficient, flexible, and dependable.

The Benefits of Energy Storage

Energy storage, especially when paired with solar energy, offers a whole host of benefits—economically, socially, and environmentally. Some of the key benefits of energy storage include:

  • Reduced expenses for consumers

  • Greater energy flexibility and reliability

  • Decreased strain on the grid

  • Integration of varied power generating sources like solar and wind

  • Lessened climate impact, especially when used alongside renewable generation sources

The benefits of energy storage are hugely varied and far-reaching. Energy storage is scalable, offering advantages for everyone from families and homeowners to small businesses and international corporations. If you want to save money while helping the environment, then solar-plus-storage is the way to go.

With energy storage becoming more prevalent throughout the energy sector, more and more companies are offering energy storage solutions to consumers. Below, you’ll find a list of the top 50 energy storage companies in 2021. The following companies operate both nationally and internationally to provide energy storage systems for a wide range of clients, from residential property owners to large corporations. Not every company listed operates exclusively in the energy storage sector—some may work in adjacent sectors—but they are all major players in the growth and development of the energy storage industry

Top Energy Storage Companies in 2021

Below, in no particular order, are some of the biggest companies operating in the energy storage sector in 2021. The future looks bright for battery storage systems and these companies will undoubtedly play a prominent role in the growth of both energy storage systems and renewable energy projects.

#1. NextEra Energy

One of the biggest utility companies in the United States, supplying electricity to over 5 million Florida residents. Alongside its affiliates, NextEra Energy is the world’s largest generator of renewables from wind and solar and a world leader in battery storage.

#2. Toshiba

Toshiba’s energy storage system uses a combination of SCIB tech and a highly performing DC/AC converter. Toshiba’s efficient, durable energy storage solution utilises peak load and stability controls. 

#3. Tesla

Established back in 2003, Tesla has grown to become one of the most recognisable brands in the world, operating in the EV, solar, and energy storage sectors. Alongside vehicles like the Model S, Model X, and Model 3, Tesla’s energy storage solutions include the Powerwall and Powerpack batteries.

#4. sonnen GmbH

The German company offers affordable renewable energy generation and battery storage solutions. Sonnen’s mission is to provide its consumers with clean energy and independence from the power grid.

#5. General Electric

Dating all the way back to 1890, General Electric has been a huge player in the U.S. energy sector for 130 years. Constantly striving to enhance and innovate its line of products, GE offers its ‘Reservoir’ energy storage system for integration across power grids.

#6. Siemens

Even older than GE, the German corporation was established all the way back in 1847. Siemens is the biggest European industrial manufacturer, operating in the industry, healthcare, and infrastructure sectors as well as the energy industry.

#7. Panasonic

The Japanese corporation is a huge name in electronics, providing solutions for homes, cars, and businesses. Panasonic also operates in the renewable energy sector, listing one of its five company segments as ‘Eco-Solutions’.

#8. ABB

Established in the 1988, ABB is a Swiss company pursuing technological innovation. ABB serves sectors including utility, industries, infrastructures, and transport.

#9. Johnson Controls

Dating all the way back to 1885, Johnson Controls holds productivity, security, and sustainability as its three main principles. The company is focused on the growth of smart communities & cities with effective energy systems, integrated infrastructures, and cutting-edge transportation.

#10. Fluence

Fluence is a global leader in energy technologies and services, offering three different pre-configured systems for various customers and applications. 

#11. Samsung SDI

Samsung is a worldwide leader in the lithium-ion battery storage market, offering residential customers the ability to connect to the grid and PV arrays for the most efficient energy consumption model.

#12. LG Chem

Another frontrunner in the global energy storage market, LG offers an optimised energy storage battery solution. LG’s products use the latest, most innovative technologies, providing maximum energy efficiency.  

#13. RES

Working in the development, engineering, construction, and operation of projects worldwide, RES has a portfolio of over 16 gigawatts. The company offers a wide range of energy storage solutions, tailored to meet the needs of any client.

#14. Eversource Energy

One of the biggest energy companies in the Northeast, Eversource delivers electricity and natural gas, as well as water, to 4 million customers in Connecticut, New Hampshire, and Massachusetts. Eversource has also been breaking into the energy storage market in recent years.

#15. Invenergy LLC

The Chicago-based firm is a pioneer in the growth of energy storage solutions in the United States. With a focus on large-scale energy storage systems, Invenergy adds flexibility and adaptability to power grids.

#16. Xcel Energy

Operating across eight states in the West and Midwest, Xcel Energy provides services to 3.4 million electricity customers and 1.9 million natural gas customers. Its comprehensive portfolio includes a rapidly growing energy storage component.

#17. Austin Energy

A community-owned utility company, Austin Energy services the City of Austin, Travis County, as well as a small portion of Williamson County. Its diverse portfolio includes energy storage projects.

#18. National Grid

Servicing New York, Massachusetts, and Rhode Island, National Grid is one of the largest energy suppliers in the country. National Grid is increasingly moving toward renewable energy solutions, including battery storage projects.

#19. Georgia Power

Established in 1902, Georgia Power is a public utility company serving over 2.4 million customers in the state. Like many others, the company has been further exploring energy storage technologies in recent years.

#20. Duke Energy

Based in Charlotte, North Carolina, Duke Energy supplies electricity to 7.4 million customers in the Southeast and Midwest. Its commercial business has been developing renewable energy and battery storage projects throughout the United States.

#21. AES Corporation

With a portfolio of distribution businesses, thermal generation facilities, and renewable energy generation facilities, AES provides sustainable energy in fourteen different countries

#22. Entergy

Coming up on 30 years in business, Entergy delivers electricity to 2.9 customers in Arkansas, Louisiana, Mississippi, and Texas. The company owns and operates power plants with 30,000 megawatts of capacity, and has also moved into the energy storage sector.

#23. DTE Energy

DTE develops and manages a diverse range of energy-related businesses and services across the country. Its portfolio includes a number of battery energy storage projects.

#24. NV Energy

NV Energy is an energy provider for 2.4 million electric customers throughout Nevada and Northeastern California. Like many others, it has been breaking into the energy storage industry with a number of new projects in recent years.

#25. CPS Energy

CPS provides natural gas and electricity services to over a million customers in San Antonio, Texas. As with many of the other energy companies in the United States, it has ventured into the battery storage sector in recent times.

Energy Storage System 1

#26. Pacific Gas & Electric (PG&E)

One of the largest combined natural gas and electric companies in the United States, PG&E delivers energy to almost 16 million customers in Northern and Central California. It continues to embrace a wide range of energy storage technologies, developing new projects all the time.

#27. Connecticut Light and Power Company

CL&P provides 1.2 million Connecticut energy consumers with safe, reliable electricity. CL&P operates operates energy storage projects using both fuel cell and pumped hydro technologies.

#28. CMS Energy

CMS Energy, the parent company of a number of subsidiaries, operates primarily in Michigan. Through its subsidiary companies, CMS operates across a wide spectrum of the energy industry, including in the energy storage sector.

#29. PECO

A subsidiary of Exelon, PECO serves 1.6 million electricity customers and 485,000 natural gas customers in the five-county Philadelphia region. The company also operates a number of thermal energy storage projects.

#30. Cypress Creek Renewables

Cypress Creek Renewables is one of the largest solar companies in the United States, with offices across the country. Though its primary focus is utility-scale ground-mount projects, CCR is also involved in the development of battery storage projects.

#31. Imperial Irrigation District

Though primarily concerned with the provision of water for agriculture in Southern California’s Imperial Valley, IID is also involved in the electricity industry. Additionally, IID has dipped into the lithium-ion battery storage industry. 

#32. Ameresco

Ameresco offers energy services and solutions for businesses and organizations through North America and Europe, with over 1,000 employees in the United States, Canada, and the United Kingdom. As you might expect from a company of this scale, Ameresco has also ventured into the energy storage industry.

#33. SunPower

SunPower is one of the most recognized companies in the solar business, working with residential customers, businesses, governments, educational institutions, and utilities around the world. In terms of energy storage, SunPower has primarily focused on lithium-ion battery systems.

#34. New York Power Authority

The largest state public power organization in the country, NYPA operates sixteen generating facilities and over 1,400 circuit-miles of transmission lines. Its primary focus in terms of generation is clean, renewable hydropower. 

#35. Borrego Solar Systems

In business for forty years, Borrego Solar Systems works with both commercial solar and energy storage systems. Borrego acts as a leading engineer, developer, installer, financier, and operator in these fields.

#36. Exelon

Exelon is one of the largest competitive power generation companies in the United States, with over 32,000 megawatts of nuclear, gas, wind, solar and hydroelectric generating capacity. Like many of the biggest names in the business, Exelon has been working on further developing its energy storage portfolio.

#37. Con Edison

Con Edison delivers energy products and services to its customers via a number of subsidiaries, including Consolidated Edison Company of New York, Inc. (CECONY), Orange and Rockland Utilities, Inc. (O&R), Con Edison Clean Energy Businesses, Inc., and Con Edison Transmission, Inc. Of course, Con Edison is also branching out into the energy storage industry. 

#38. Pedernales Electric Cooperative

Notably founded in 1938 by Lyndon B. Johnson, PEC serves almost 290,000 meters across Central Texas. Recently, PEC has been working toward the development of lithium-ion battery projects. 

#39. Key Capture Energy

Key Capture Energy develops utility-scale battery storage projects. The company’s goal is to optimise the grid of tomorrow through the most effective, efficient implementation of large-scale energy storage systems.

#40. Avangrid 

Avangrid, a subsidiary of Spanish energy company Iberdrola, is made up of two separate segments—Avangrid Networks and Avangrid Renewables. The Avangrid Renewables segment includes a number of energy storage projects.

#41. El Paso Electric

El Paso Electric has a net dependable generating capability of 1,852 MW, with a number of facilities dotted throughout Arizona, New Mexico, and Texas. EPE has also ventured into the energy storage sector with operating capacity in thermal energy storage.

#42. Arizona Public Service (APS)

APS serves about 2.7 million customers throughout the state of Arizona, using a balanced energy mix which is nearly 50% carbon-free. The company strives to diversify its portfolio and offer greater choice to its customers, and has a number of energy storage projects both under construction and in operation.

#43. PSEG Long Island

PSEG Long Island is a subsidiary of the overall Public Service Enterprise Group Incorporated. Serving the Long Island, NY area, the company has pursued energy storage solutions in recent years.

#44. Florida Power & Light 

FPL is the third-largest electric utility company in the United States, serving over 10 million people across the state of Florida. The company has established battery storage projects as part of its highly efficient energy portfolio.

#45. Hecate Energy

Hecate Energy develops, owns, and operates power plants across North America and further afield. As well as solar, wind, and natural gas, the company also specializes in energy storage solutions.

#46. Tucson Electric Power (TEP)

TEP delivers power to over 417,000 customers in the Tucson metropolitan area. The company also offers comprehensive energy services to its customers, with a fast-growing renewable energy portfolio which includes energy storage projects.

#47. Central Hudson Gas & Electric Corporation

Established in 1925, Central Hudson Gas & Electric delivers natural gas and electricity to 380,000 customers in New York’s Hudson Valley. The corporation is also involved in a number of energy storage projects.

#48. S&C Electric Company

S&C Electric Company, founded over a century ago in 1909, specializes in the switching, protection, and control of electric power systems. Like many others, the company has delved into the energy storage industry with a number of operating lithium-ion battery projects.

#49. Consumers Energy

The largest energy provider in Michigan, Consumers Energy provides natural gas/electricity to 6.7 million residents in the state. CE has a number of operational pumped hydro energy storage projects.

#50. FuelCell Energy 

FuelCell Energy provides environmentally responsible solutions for various applications, including long duration energy storage, through state-of-the-art fuel cell power plants. The company operates on a global basis, with installations across three continents. 

Energy Storage System 2

Interested in an energy storage system for your home or business? Reach out to YSG Solar now. Whether or not you’ve already installed solar panels with YSG, or you’re completely new to renewables and energy storage, we’re here to help. To learn more, send us an email or call at 212.389.9215 today.

YSG Solar is a project development vehicle responsible for commoditizing energy infrastructure projects. We work with long-term owners and operators to provide clean energy assets with stable, predictable cash flows. YSG's market focus is distributed generation and utility-scale projects located within North America.