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Solar Industry Data


Solar Industry Growing at a Record Pace

Solar energy in the United States is booming. Along with our partners at GTM Research and The Solar Foundation, SEIA tracks trends and trajectories in the solar industry that demonstrate the diverse and sustained growth across the country.

Below you will find charts and factoids that summarize the state of solar in the U.S. SEIA Members have access to presentation slide decks that contain this data and much more. Not a SEIA Member? Join today!

Solar Growth and the ITC

The Solar Investment Tax Credit (ITC) has provided industry stability and growth since its initial passage in 2006. In the last decade, solar has experienced an average annual growth rate of 59%. Installations surged in 2016 ahead of potential drop down of the ITC, but an extension in late 2015 has created federal policy stability through 2021. To learn more about the ITC and its impact on the solar industry, click here.

Solar Growth with the ITC

Solar as an Economic Engine

Nearly 250,000 Americans work in solar - more than double the number in 2012 - at more than 9,000 companies in every U.S. state.

Solar Industry Employment by Sector

Growth in Solar is led by Falling Prices

The cost to install solar has dropped by more than 70% since 2010, leading the industry to expand into new markets and deploy thousands of systems nationwide. However, over the second half of 2017 we’ve seen slight upticks in system prices due to increases in module costs caused by the section 201 trade case.

Solar Growth and Price Decline

Solar's Share of New Capacity has Grown Rapidly

Solar has ranked first or second in new electric capacity additions in each of the last 5 years. Solar’s increasing competitiveness against other technologies has allowed it to quickly increase its share of total U.S. electrical generation- from just 0.1% in 2010 to nearly 2% in 2017. 

Annual Additions of New Electric Capacity

U.S. Solar Market Through 2017: Key Takeaways


10,608 MW installed in 2017


  • Down 30% from a record-breaking 2016, but over 40% higher than 2015
  • 3,898 MW installed in Q4 2017 for third-largest quarter ever

Over 53 GW of total solar capacity now installed

  • Average annual growth rate of 59% over the last 10 years
  • Generates enough electricity to power 10.1 million homes

In 2017, solar accounted for 30% of all new capacity installed

  • Builds upon strong 2016 in which Solar accounted for 39% of all new capacity, ranking 1st
  • Solar currently generates 1.9% of all electricity nationally

While prices have dropped 52% over last 5 years, price declines slowed in 2017

  • Total installed system price changes over last 12 months range from an increase of 1.6% in residential to a decrease of 2% in non-residential
  • System price increase attributable to rising module costs caused by Section 201 case; other hardware and some soft costs have declined
  • Still, 27 states had reached grid parity for residential by end of 2017 (only 12 in 2014)
  • Utility-Scale PPAs now signed at $28 - $45 per MWh

There are now more than 1.6 million solar installations in the U.S.

  • After reaching 1 million in 2016, 2 million should be hit in 2019 and 4 million by 2023

Solar PV Price Breakdown

The biggest cost-decline opportunity in the solar industry exists in soft costs, which includes labor, permitting/inspection and supply chain. The U.S. Department of Energy is leading the charge on reducing soft costs, and SEIA and The Solar Foundation are working with cities and counties to streamline permitting processes and reduce local barriers to going solar. 

Q4 2017 Quoted PV Prices

The U.S Solar Industry is a 50 State Market

While California has traditionally dominated the U.S. solar market, other markets are continuing to expand, including Minnesota, South Carolina, Florida and Texas.  In 2017, installations in states outside the top 10 constituted a record 28% of the total market.  As the price of solar continues to fall, new state entrants will grab an increasingly larger share of the national market.

State Solar Capacity through 2017


Top 10 solar states


Residential Market Continues to Diversify

After years of 50%+ annual growth, residential market growth has slowed in several leading states as installers re-orient their sales and business strategies.  At the same time, over half the states saw growth in residential solar in 2017, as share of installations among states outside the top 10 hit 18%- an all-time high. 

Annual Residential Solar PV Installations

Community Solar, Corporate Procurement Boost Non-Residential Solar Market

The rapid rise of community solar has boosted the non-residential segment in recent years, coupled with increasing numbers of both off-site and rooftop corporate procurement by such companies as Walmart, Apple, Target and Amazon.  Both sub-segments are expected to drive growth in non-residential going forward.  

Non-Residential Solar PV Installations

Utility-Scale Solar Pipeline

In 2017, 59% of all solar capacity installed was utility-scale, and this segment should account for close to two-thirds of all solar capacity again through 2021. Procurement for new utility-scale projects slowed over the second half of 2017 due to uncertainty surrounding the Section 201 trade case, but the contracted pipeline is expected to increase in 2018 as developers look to build out projects ahead of Investment Tax Credit declines.  


U.S. Utility-Scale PV Pipeline

U.S. Solar PV Growth Forecast

Installation growth is expected to remain flat in 2018 as the industry adjusts to new tariffs on imported solar panels. Incremental growth is expected to return in 2019 and beyond as tariffs decline, prices drop and developers accelerate build-out ahead of Investment Tax Credit declines. By 2021 there will be over 100 GW of solar installed in the U.S., with annual totals exceeding 15 GW by 2023.

U.S. Solar PV Deployment Forecast

Solar Helps K-12 Schools and Fortune 500 Companies Save Money

Data from SEIA's annual Solar Means Business report show that major U.S. corporations, including Target, Walmart and Apple are going solar at an incredible rate. The top 25 corporate solar users in America have installed nearly 1,100 MW of capacity at 2,000 different facilities across the country as of October 2016.

Other key takeaways:

  • The amount of solar installed at U.S. corporations and businesses is enough to offset 1.1 million metric tons of carbon dioxide emissions each year
  • Commercial prices have fallen by 58% since 2012 and by 16% in the last year

Explore the map below to see where the top 25 corporate solar users in the U.S. have installed solar energy systems. Click here to view the full Solar Means Business Report.


SEIA, The Solar Foundation and Generation 180 produced Brighter Future: A Study on Solar in U.S. Schools, which shows that more than 5,500 K-12 schools nationwide have installed solar energy systems. Check out the map below, and click here to access more materials from the report.

Each pin on the map below represents a K-12 school or school district with a solar energy system. For a fullscreen version, click here.

Solar Schools Map Legend