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

June 17, 2026
Distributed solar developers including MCEC, Aligned Climate Capital and Catalyst Power have secured funding across US projects.
June 17, 2026
Independent power producer (IPP) Alluvial Power has reached commercial operation at its 150MWac project in Ford County, Kansas.
June 16, 2026
European inverter manufacturing capacity has now surpassed 100GW, according to figures from PV Tech Market Research.
Premium
June 16, 2026
PV Tech Premium sat down with Anne Loomis, partner at Troutman Pepper Locke, to discuss the safe harbour deadline for US solar developers.
June 15, 2026
Enphase Energy has launched its IQ9N Microinverter, which uses gallium nitride (GaN) technology, for the European residential solar sector.
June 15, 2026
CPUC has finalised details of its community solar, which has been dismissed as 'unworkable and destined for continued failure' by CLASS.

Upcoming Events

Media Partners, Solar Media Events
June 30, 2026
Sacramento, California
Media Partners, Solar Media Events
August 25, 2026
São Paulo, Brazil
Media Partners, Solar Media Events
September 1, 2026
Mexico City, Mexico
Solar Media Events
September 9, 2026
Schaumburg, Illinois
Media Partners, Solar Media Events
September 9, 2026