U.S. construction costs dropped for solar, wind, and natural gas-fired generators in 2021
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<div class="title bg_tie"> <h1>Today in Energy</h1>
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<span class="date">October 3, 2023</span>
<h1 id="articleTitle"><a href="#">U.S. construction costs dropped for solar, wind, and natural gas-fired generators in 2021</a></h1>
<img src="images/2023.10.03/main.svg" alt="U.S. capacity-weighted average utility-scale construction cost by technology" border="0">
<div class="source">
<span style="line-height:110%">
<strong>Data source: </strong>U.S. Energy Information Administration, <a href="https://www.eia.gov/electricity/generatorcosts/"><em>Electric Generator Construction Costs</em></a> and <a href="https://www.eia.gov/electricity/data/eia860/"><em>Annual Electric Generator Report</em></a>
</span></div>
<hr style="margin:0">
<p>The average construction costs for solar photovoltaic systems, wind turbines, and natural gas-fired electricity generators all decreased in the United States in 2021 compared with 2020, according to our <a href="https://www.eia.gov/electricity/generatorcosts/">recently released data</a>. Average construction costs fell by 18% from 2020 for natural gas-fired generators, by 5% for wind turbines, and by 6% for solar photovoltaic systems. </p>
<p>These three technologies—solar, wind, and natural gas—made up more than 91% of the capacity added to the U.S. electric grid in 2021. Investment in new electric-generating capacity in 2021 increased by 10% from 2020 to $50.8 billion dollars.</p>
<p>Generator cost data are reported to EIA through Form EIA-860, <em>Annual Electric Generator Report</em>. The costs discussed in this article reference the <a href="https://www.eia.gov/electricity/generatorcosts/"><em>Electric Generator Construction Costs</em></a> web page, which organizes the nominal construction cost values for generators installed in each reporting year. The recently released data examine trends from past years. Discussion of additional cost information and trends can be found in the <a href="https://www.eia.gov/outlooks/steo/pdf/steo_full.pdf"><em>Short-Term Energy Outlook</em></a>. </p>
<p><strong>Solar</strong><br>
Average U.S. solar construction costs across all solar panel types fell 6% to $1,561 per kilowatt (kW) in 2021. The decrease was primarily driven by a 10% drop in the construction cost for <a href="https://www.pilkington.com/en/global/commercial-applications/types-of-g… silicon</a> tracking panels, which fell to $1,423/kW, their lowest average cost since 2014. </p>
<p>The average construction cost for <a href="https://www.pilkington.com/en/global/commercial-applications/types-of-g… silicon</a> fixed-tilt panels increased by 5%, making them the most expensive of the major solar technologies at $2,047/kW. The average cost for <a href="https://www.energy.gov/eere/solar/cadmium-telluride#:~:text=The%20benef… telluride</a> panels remained relatively stable, decreasing only 1% to $1,626/kW in 2021.</p>
<p>Most solar panels installed in the United States are <a href="https://www.pilkington.com/en/global/commercial-applications/types-of-g… silicon</a> tracking panels. Unlike <a href="https://www.eia.gov/todayinenergy/detail.php?id=37372#:~:text=Fixed%2Dt…; systems, <a href="https://www.solarpowerworldonline.com/2020/01/what-is-a-solar-tracker-a… tracking systems</a> automatically move to follow the sun as it moves across the sky, allowing more continuous sun exposure and, therefore, greater electricity production. In 2021, crystalline silicon tracking systems accounted for 56% of the utility-scale solar capacity added to the U.S. power grid. </p>
<img src="images/2023.10.03/chart2.svg" alt="average U.S. construction cost for solar photovoltaic systems" border="0">
<div class="source">
<span style="line-height:110%">
<strong>Data source: </strong>U.S. Energy Information Administration, <a href="https://www.eia.gov/electricity/generatorcosts/"><em>Electric Generator Construction Costs</em></a> and <a href="https://www.eia.gov/electricity/data/eia860/"><em>Annual Electric Generator Report</em></a>
</span></div>
<hr style="margin:0">
<p><strong>Wind</strong><br>
The average construction cost for U.S. onshore wind turbines fell 5% in 2021 to $1,428/kW. The average construction costs for all three wind turbine size groups decreased slightly in 2021. The cost for the largest wind farms—those with more than 200 megawatts (MW) of capacity—remained relatively flat, decreasing by 1% to $1,382/kW. Wind farms ranging from 100 MW to 200 MW also decreased in average construction costs to $1,464/kW in 2021, down 4.4%. Average construction costs for wind farms with 1 MW to 100 MW of capacity decreased by 22% to $1,949/kW in 2021. </p>
<img src="images/2023.10.03/chart3.svg" alt="average U.S. construction costs for wind farms" border="0">
<div class="source">
<span style="line-height:110%">
<strong>Data source: </strong>U.S. Energy Information Administration, <a href="https://www.eia.gov/electricity/generatorcosts/"><em>Electric Generator Construction Costs</em></a> and <a href="https://www.eia.gov/electricity/data/eia860/"><em>Annual Electric Generator Report</em></a>
</span></div>
<hr style="margin:0">
<p><strong>Natural gas</strong><br>
The average construction cost for natural gas-fired generators fell 18% between 2020 and 2021. The decrease in average cost for natural gas-fired generators was driven primarily by decreases in the cost for combustion turbines. The average construction cost for combustion turbines fell by 19% in 2021 to $512/kW in 2021. </p>
<p>The average <a href="https://www.tva.com/energy/our-power-system/natural-gas/how-a-combined-…; generator construction cost increased by 8% in 2021 to $1,252/kW.</p>
<img src="images/2023.10.03/chart4.svg" alt="average U.S. construction costs for natural gas-fired generators" border="0">
<div class="source">
<span style="line-height:110%">
<strong>Data source: </strong>U.S. Energy Information Administration, <a href="https://www.eia.gov/electricity/generatorcosts/"><em>Electric Generator Construction Costs</em></a> and <a href="https://www.eia.gov/electricity/data/eia860/"><em>Annual Electric Generator Report</em></a>
</span></div>
<hr style="margin:0">
<p><strong>Principal contributor: </strong>Alex Mey</p>
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<p><strong>Tags: </strong>
<a href="index.cfm?tg=natural gas">natural gas</a>,<a href="index.cfm?tg=generation"> generation</a>,<a href="index.cfm?tg=electricity"> electricity</a>,<a href="index.cfm?tg=wind"> wind</a>,<a href="index.cfm?tg=solar"> solar</a> </p>
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