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.

16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2028 and beyond.
13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our fourth PV CellTech conference dedicated to solar manufacturing in the USA. From polysilicon, wafers, ingots, cells and modules, to critical component suppliers including glass and frames, the event connects every stage of the value chain under one roof. PV CellTech USA also brings together investors, innovators, manufacturers and industry stakeholders to collaborate and strengthen domestic solar manufacturing across the United States.

Read Next

June 1, 2026
Nextpower has filed a patent lawsuit against GameChange Energy on the same day GameChange announced a strategic consolidation of its activities and rebrand.
June 1, 2026
SEG Solar will build a third module manufacturing plant in the US that will bring the company’s total manufacturing capacity to 10.6GW.
June 1, 2026
EDF power solutions North America has signed a 30-year PPA to sell power generated at the 400MW Utah Solar 1 Energy project to the LADWP.
June 1, 2026
US IPP Matrix Renewables and EPC contractor SOLV Energy have commenced construction on the Tormes Solar Project, a 457MWdc facility in Navarro County, Texas.
June 1, 2026
New York State's 2027 fiscal year budget has allocated US$200 million for rooftop and community solar, unlocking 1GW of new PV.
June 1, 2026
The ESMC has joined 22 other European industry bodies in signing an open letter, calling for greater protection from 'unfair trade practices'.

Upcoming Events

Media Partners, Solar Media Events
June 2, 2026
Johannesburg, South Africa
Media Partners, Solar Media Events
June 3, 2026
National Exhibition and Convention Center (Shanghai)
Solar Media Events
June 16, 2026
Napa, USA
Media Partners, Solar Media Events
June 30, 2026
Sacramento, California
Media Partners, Solar Media Events
August 25, 2026
São Paulo, Brazil