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Most utility-scale fixed-tilt solar photovoltaic systems are tilted 20 degrees-30 degrees

(Thu, 27 Dec 2018) Nearly 40%, or 10.4 gigawatts (GW), of utility-scale solar photovoltaic (PV) systems operating in the United States at the end of 2017 were fixed-tilt PV systems rather than tracking systems. Of the utility-scale fixed-tilt solar PV systems, 76% of the capacity was installed at a fixed angle between 20 degrees and 30 degrees from the horizon.

In 2016, U.S. energy expenditures per unit GDP were the lowest since at least 1970

(Wed, 26 Dec 2018) U.S. energy expenditures declined for the fifth consecutive year, reaching $1.0 trillion in 2016, a 9% decrease in real terms from 2015. Adjusted for inflation, total energy expenditures in 2016 were the lowest since 2003. Expressed as a percent of gross domestic product (GDP), total energy expenditures were 5.6% in 2016, the lowest since at least 1970.

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