GTM: Top 10 developers account for just 42% of US commercial solar market

Facebook
Twitter
LinkedIn
Reddit
Email
Selected regional developers. Source: GTM Research

GTM Research’s latest report, US Commercial Solar Landscape 2016-2020, details how the top ten developers in the country account for just 42% of the overall commercial solar market.

“The fragmented commercial developer landscape is largely the result of bottlenecks in the customer origination process that make it difficult for any individual player to consistently grow,” according to senior solar analyst and report author Nicole Litvak. “There are therefore no dominant players driving the overall market growth, as SolarCity does in residential.”

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

This is in contrast to the heavily-saturated and competitive residential market, where the leading installers account for 58% of the market share, with the top three companies (SolarCity, Vivint Solar and Sunrun) installing almost half of the 2015 total. 

Leading residential and non-residential installers' market share 2015. Source: GTM Research

The report forecasts that by 2020, the US commercial space will be valued at US$3.8 billion; presenting big opportunity for an unconsolidated market that has yet to become aggressively competitive.

As the commercial market stands presently, there are in fact large competitive players, thirteen of which are profiled in the report. The report notes that regional developers are generally more successful than their national counterparts in originating local customers due to their knowledge of the local markets and regulations. However, those systems are often more difficult to fund.

“The commercial market has struggled to efficiently match individual projects with financing,” writes Litvak. “Furthermore, there is almost a complete lack of tax equity financing available for systems with non-creditworthy customers.”

The report concludes with a prediction for the stagnant commercial sector to experience considerable growth over the next five years. Forecasts for US commercial market growth are at 30% this year with more than 1.3GW installed across the country.

Drivers for this expansion include the extension of the federal Investment Tax Credit (ITC), the widespread adoption of solar by national consortiums and an expanding market for community solar.  

GTM Research also predicts that the non-residential segment will hit 3GW by 2020.

Read Next

Premium
October 16, 2026
Markus Beck of RCT Solutions discusses how the US PV manufacturing can be sustained beyond the current boom.
Premium
October 16, 2026
Industry experts from all fields of the solar PV industry gathered this week at PV CellTech USA to discuss the US solar manufacturing sector.
October 16, 2026
Concord New Energy (CNE) has closed US$400 million in financing for its US clean energy and digital infrastructure portfolio.
October 15, 2026
Aligned Climate Capital and Nexamp have secured finance for their respective community solar portfolios in the US.
October 14, 2026
Arevon Energy signed three 20-year Indexed REC contracts with Illinois utilities for its 200MWac/275MWdc Panther Energy solar project.
October 13, 2026
Heliene has announced the sale of Section 45X PTCs, facilitated by U.S. Bank's community development and infrastructure finance subsidiary.

Upcoming Events

Solar Media Events, Upcoming Webinars
October 21, 2026
2pm AEDT
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK
Solar Media Events
April 20, 2027
Istanbul, Türkiye