Top 10 solar companies in the United States


The United States of America is one of the few countries in the world, alongside Germany, China and India, to raise the stakes in its solar industry. While the current Trump administration may appear hostile to the concept of human-induced climate change, several US companies believe solar power is perhaps the most sustainable form of energy – one that will help probably to a better future, not just for the United States, but for the whole world.

The United States has one of the highest carbon footprints of any major nation in the world. And that makes them all the more necessary to embrace energy sources that can help them reduce some of their carbon emissions – a move that should be made even after President Trump withdrew from the deal. Paris, simply for the gravity of the situation that the current president often seems to miss.

That said, it’s not as if America isn’t making a serious push in the solar sector, rather the opposite is true. Statistics tell us that over the past four decades, the cost of solar power in the United States has fallen about 150 times. At the forefront of this change are a number of companies that are shaping America’s solar industry. We take a look at the 10 largest solar energy companies in the United States:


When you are a subsidiary of one of the most revolutionary companies in the modern world (Tesla), you have big shoes to fill. SolarCity, since its inception in 2006, has experienced massive growth across the board and has firmly established itself as one of the largest solar companies in the United States. The USP of the firm is that it has invested heavily in solar technology R&D. Apart from that, it also deals with solar home installations.


The company is based in California and started operations in 2007. Over the past 10 years, the company has expanded its market from the Americas to parts of Europe. Sungevity mainly deals with the design of solar home systems, where it provides solutions ranging from installation to financing. The company was acquired from the Northern Pacific Group in 2017.

Solar Five

Solar Five may not have a global presence, however, it is one of the largest solar companies in the United States that provides residential solar power systems. Its teams in Massachusetts and Florida focus primarily on the local community and work closely with them to help them install solar home systems.


SunPower Corporation is engaged in the design and manufacture of crystalline silicon solar panels and photovoltaic cells, a technology developed by researchers at Stanford University. What gives the company access to resources and labor is the fact that it belongs to the fourth largest energy company in the world, Total.

RGS Energy

It seems the biggest opportunities in the US solar scene are in the residential sector, as like many of the companies on this list, RGS Energy is also primarily focused on residential solar space. Interestingly, RGS Energy is one of the oldest solar companies in the United States, as it started selling solar panels in 1978. The company serves customers in all 50 states of America as well as 10 Canadian provinces. .

Horizon solar power

Horizon Solar operates in the residential solar space in the United States, a seemingly large market. It has always been ranked among the top solar companies in the United States. Since its creation ten years ago, the company has established a strong position in the American solar market while providing installation and financing facilities.


Headquartered in the San Francisco area of ​​California, Sunrun began operations in 2007. Currently, the company has operations in 23 states of the United States as well as Puerto Rico, making it one of the leading companies in solar power in the United States.


Unlike the other companies on this list, Soligent is primarily a distributor of solar products. They have a nationwide supply chain with customers from almost every state in the United States. Besides distribution, they also offer a strong after-sales support system by providing engineering and maintenance services.

OneRoof Energy

Another California-based company, OneRoof started operations in 2011 before going public in 2012. Currently, the company offers financing options for people who want to install solar systems in their homes.


While PetersenDean started out as a simple roofing contractor, in a short time he expanded his operations to solar installations in residential, commercial and industrial spaces. In addition to installing solar systems, PetersenDean also offers attractive financing options to its customers.

So this is it. The United States of America still relies heavily on its coal industry to meet the majority of its energy needs. However, we can hope that over time and as people and more importantly the administration come to terms with the many benefits of solar power.

* This list of the 10 largest solar companies in the United States is the result of the editorial decision of the ELE Times.

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