Solar Builder

MAR-APR 2018

Solar Builder focuses on the installation/construction of solar PV systems. We cover the latest PV technology (modules, mounting, inverters, storage, BOS) and equip installers/contractors with tips and tools to make informed purchasing decisions.

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SOLARBUILDERMAG.COM | 11 Now that the #TrumpTariffs are in place, we know that utility-scale solar will take a hit. GTM Research is expecting an 11 percent decrease in U.S. solar PV installations over the next five years — 7.6 GW reduction from pre-tariff expectations, 65 percent of which is in utility-scale. But optimism remains in the residential market. Let's start with just how much the tariff will increase the price of a residential solar installation. Based on the cost break- down by component provided via SolarReviews (Fig 1.), a 30 percent tariff would add $0.21 per watt or 6.8 percent to the retail cost of a solar system. But as Andrew Sendy, chairman of Solar Investments Inc., points out, this isn't quite true. His analysis via Solar Estimate: "The 70 cents average wholesale cost of solar panels in the United States is a blend of the cost of premium panels which can be around 90 cents per watt at the wholesale level [i.e Sunpower, Panasonic and LG] and the widely used Tier One Chinese solar pan- els such as Canadian Solar, Trina, ReneSola and Jinko, which have been sold during 2017 in larger volumes at the wholesale level for around 50 cents per watt," Sendy writes. "If we look at the effect the new tariffs have on the cost of Tier One Chinese modules, selling for $0.50 per watt in 2017, then all things being equal the 30 percent tariff would add 15 cents per watt to the wholesale cost of panels themselves. This would equate to around 4.9 percent of the retail price of a solar system based on SolarReviews research." A 4.9 percent increase would increase the average residential cost of solar to $3.23 per Price Points NEWS IN THE How much will tariffs increase the costs of residential solar? By Chris Crowell Fig. 1

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