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

June 18, 2026
Developer Lightsource bp has reached financial close on the 171MWdc Glorit solar PV power plant, north of Auckland, New Zealand.
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 17, 2026
Navitas announced investment, Bondada secured EPC contract, SolarSquare raised US$53 million, Gujarat Inject and Waaree won module orders.
June 17, 2026
Foresight Group-backed developer NZ Clean Energy (NZCE) and Fonterra have signed a long-term virtual power purchase agreement (PPA) under which the dairy cooperative will purchase electricity generated by NZCE's Darfield solar-plus-storage project in Canterbury.
June 16, 2026
European inverter manufacturing capacity has now surpassed 100GW, according to figures from PV Tech Market Research.

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