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

Unlock unlimited access for 12 whole months of distinctive global analysis

Photovoltaics International is now included.

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Unlimited digital access to the PV Tech Power journal catalogue
  • Unlimited digital access to the Photovoltaics International journal catalogue
  • Access to more than 1,000 technical papers
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

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

17 June 2025
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 17-18 June 2025, will be our fourth 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 2026 and beyond.
7 October 2025
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.
21 October 2025
New York, USA
Returning for its 12th edition, Solar and Storage Finance USA Summit remains the annual event where decision-makers at the forefront of solar and storage projects across the United States and capital converge. Featuring the most active solar and storage transactors, join us for a packed two-days of deal-making, learning and networking.

Read Next

June 10, 2025
Australia’s Queensland government has confirmed an AU$2.4 billion investment in the CopperString transmission project, aiming to extend the National Electricity Market (NEM) to the North West Minerals Province.
June 9, 2025
Solar manufacturer Qcells has launched a recycling arm, called EcoRecycle, and a recycling plant in the US state of Georgia.
June 9, 2025
Sonnedix has signed a power purchase agreement (PPA) with Renfe to supply 420GWh of renewable energy annually for its commercial operations.
June 9, 2025
Growing political headwinds threaten to dent US solar manufacturing and project deployment, despite a strong start to 2025.
June 9, 2025
US residential solar installer Sunnova has laid off more than half of its workforce, while a subsidiary from Delaware filed for Chapter 11 bankruptcy.
June 6, 2025
rPlus Energies has secured more than US$500 million for an 800MW solar-plus-storage project in Emery County, Utah, US.  

Subscribe to Newsletter

Upcoming Events

Solar Media Events
June 17, 2025
Napa, USA
Upcoming Webinars
June 30, 2025
10am PST / 6pm BST
Solar Media Events
July 1, 2025
London, UK
Solar Media Events
July 1, 2025
London, UK
Solar Media Events
September 16, 2025
Athens, Greece