Residential flourishes and utility flounders in mixed 2018 for US PV

Facebook
Twitter
LinkedIn
Reddit
Email
Steady growth of residential PV installations shows the market nears maturity, the analysis said (Credit: SEIA / Wood Mackenzie)

Tariff and policy uncertainty saw installations decline across US utility and non-residential PV last year even as the residential segment bounced back, according to the Solar Energy Industries Association (SEIA) and Wood Mackenzie.

The latest update from the trade body and the consultancy found a 7% year-on-year dip for US utility-scale PV installations in 2018.

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

The segment, the analysis found, produced the bulk (6.2GW) of PV-wide capacity additions (10.6GW) in the country last year but faltered under “disruption, delay and even cancellation” due to Section 201 tariffs.

Adopted last year, the US levies on module and cell imports prompted sponsors to postpone 2018 commercial launches to 2019, according to the SEIA and Wood Mackenzie. In the Carolinas, delays were compounded by a hold-up with interconnections under the PURPA programme.

For utility-scale PV, the flip side to the Section 201 tariffs was that module prices are falling faster than expected. This, the analysis pointed out, boosted competitiveness and helped drive the signing of 13.2GW of utility solar PPAs in 2018; the resulting, current contracted pipeline of 25.3GW marks an all-time record for US solar. 

PV in US power addition top two for sixth year running

According to the SEIA and Wood Mackenzie, the 10.6GW added across all PV subcategories in 2018 marks the sixth consecutive year where solar is amongst the US top two for power additions, together with natural gas.

Unlike utility solar, the residential segment reversed its decline throughout 2017 by recording in 2018 year-on-year installation growth of 7%. The steady pace of addition indicates the market is nearing its maturity point, the new analysis indicates.

According to the document, installations across California, Massachusetts and the other typical residential heavyweights are being fast overtaken by new-entrants including Texas and Florida.

Future residential growth can be fuelled by incentives and net metering – Nevada saw a 261% jump in 2018 after reinstating the policy – but could be hindered by high customer acquisition costs, the SEIA and Wood Mackenzie noted.

Their analysis found a slight decline – 8% – in non-residential installations of US PV in 2018. Massachusetts and California alone saw a joint 450MW dip last year, although the former (64% drop) bore the brunt to a greater extent than the latter (17%).

See here for more information on the US Solar Market Insight by the SEIA and Wood Mackenzie

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

August 20, 2026
GameChange Energy has broken ground on a major expansion of its transformer manufacturing facility in Mumbai, India, as the company continues to evolve beyond its solar tracker roots into the provision of critical power infrastructure.
August 20, 2026
French energy major Engie has signed a deal to supply power from a 61MW solar PV project to a data centre in Irving, Texas.
August 19, 2026
Japanese PV manufacturer Toyo has reported 2.6GW of cell shipments and 191.5MW of module shipments in the first half of 2026.
August 19, 2026
Dimension Energy has secured US$857 million in additional capital to expand its distributed solar platform across 29 projects in the US.
August 19, 2026
US-based module manufacturer Translucent Solar has entered production ramp-up at its module assembly plant in South Carolina.
August 19, 2026
EDF power solutions North America has signed two PPAs with NV Energy to sell power generated at a solar-plus-storage project in Nevada.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
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