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Nick Cunningham

Nick Cunningham

Nick Cunningham is an independent journalist, covering oil and gas, energy and environmental policy, and international politics. He is based in Portland, Oregon. 

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Is The Sun Setting On The Solar Boom?


The U.S. solar industry is expected to see its expansion significantly curtailed this year after installing record capacity in 2016, marking the first annual decline in installations for the industry.

A new report from GTM Research and the Solar Energy Industries Association (SEIA) raises some question marks for the trajectory of the solar industry. In the second quarter, the U.S. installed 2.38 gigawatts of new solar PV. A decent performance, but with two quarters in the books, the industry is only on track to install 12.4 GW of new capacity in 2017, a decline of 17 percent from last year.

The report from GTM Research and SEIA laid out a few reasons for concern. Residential PV only expanded by 1 percent quarter-on-quarter, the result of “weakness in the California market and a slowdown in Northeast markets, which are feeling the impact of pull-back from national providers.” Solar’s super-charged growth in recent years can in part be attributed to state policies that mandate renewable energy. Those policies are reaching their limits, meaning that going forward, a lot of new installations will need to be made on a voluntary basis.

But, beyond those wrinkles, there are many reasons why solar providers still feel good about their prospects. Solar provided 22 percent of all new electric capacity in the U.S. in the first half of 2017, second only to natural gas. Also, the decline in installations this year will be in the context of a record-setting year in 2016 in which solar accounted for 39 percent of all new capacity—more than natural gas.

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The expected expiration of tax credits at the end of 2016—credits that were ultimately extended through the end of the decade—led to a massive volume of projects last year. As the industry refills the pipeline with new projects, 2017 was always going to be a bit slower than 2016.

As the solar industry matures, the heady growth rates will be harder to maintain. The industry has averaged annual growth rates of 68 percent over the last decade. As the industry continues to expand, it will still add large volumes of new capacity, but the figures, in percentage terms, will come down.

Most importantly, though, industry costs continue to decline, making solar more competitive than ever.

Costs are down 55 percent in the last five years, and the U.S. Department of Energy just released new research showing that the industry has hit a major milestone. In 2011, the agency laid out a goal to get utility-scale solar costs down to $1 per watt by 2020, a goal that the DOE says has officially been achieved this year—three years earlier than expected. Also, the DOE says solar generation now averages below 6 cents per kilowatt-hour, a competitive figure. And that ignores the fact that utilities are already signing deals with customers for even cheaper rates. SEIA says that solar has reached grid-parity in 27 states, compared to only 12 in 2014.

(Click to enlarge)

However, there are a few problems lurking just over the horizon for the solar industry. Along with the fact that state renewable energy standards are reaching their limits, the biggest threat to the industry is the potential action from the Trump administration on imported solar panels. The President is rumored to be lining up tariffs on imported panels in response to a trade dispute case—a move that would be devastating to the U.S. solar industry because a lot of panels are manufactured in China.

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The industry has projected that cumulative installed capacity would triple over the next five years, putting it well over 100 GW. But that bullish scenario is jeopardized if trade barriers are put up, resulting in “a substantial downside revision to our forecast for all three segments,” the GTM Research/SEIA report says, referring to its residential, commercial and utility-scale segments. GTM Research estimates that tariffs would erase two-thirds of the expected capacity that would be installed over the next five years. SEIA calls the trade dispute an “existential threat” to the industry, endangering a third of all solar jobs in the country.


The tariffs would reverse much progress the industry has made on costs. DOE estimates that new tariffs would increase solar module prices from 35 cents to 78 cents per watt, resulting in the cost of utility-scale solar systems to jump from $1 per watt to $1.38 per watt. As The Economist noted in August, the move would set the industry back five years.

The U.S. International Trade Commission (ITC), which will hear the trade dispute, is expected to issue a decision this month on letting the case move forward, which will ultimately put the matter in the hands of President Trump.

By Nick Cunningham of Oilprice.com

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Leave a comment
  • Oilracle on September 14 2017 said:
    ----Also, the DOE says solar generation now averages below 6 cents per kilowatt-hour---

    Right! According to their "models."
  • Michelle Shelly LeBoeuf on September 14 2017 said:
    Most of the people only did the solar installation to get the government to pay for it. I personally think it looks tacky on the houses especially when they install it on the roof that faces the road. HOA's will put a stop to that tackiness.
  • Refman on September 15 2017 said:
    Michelle: In Texas HOA's are not allowed to block solar panels. HOA's should stick to their original intent, such as not letting your neighbor paint his house purple
  • NickSJ on September 15 2017 said:
    Is the 6 cent/kwh cost claim based on full rated power or effective production, which is far less than that? Does it take into account the cost of the 100% conventional power backup required for those inconvenient hours when the sun doesn't shine? Is that number artificially reduced by tax subsidies?

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