Brown energy
Brown energy or brown power are terms that have been coined to describe energy produced from polluting sources as a contrast to green energy from renewable, non-polluting sources.<ref>Garrett-Peltier, Heidi (1 February 2017). "Green versus brown: Comparing the employment impacts of energy efficiency, renewable energy, and fossil fuels using an input-output model". Economic Modelling. 61: 439–447. doi:10.1016/j.econmod.2016.11.012.</ref> The term "grey energy" or "gray energy" has been used instead, including by the United Nations.<ref>Swiss market statement 2011; 69th session of the UNECE Timber Committee (PDF), Sabine Augustin, Eduard Belser, Thomas Bettler, Andrea Burkhard, Susan Cox, Cristoph Dürr, Mi-chael Gautschi, Ulrike Krafft, Tatiana Pasi, Michael Reinhard, Claire-Lise Suter, October 2011, p. 14, retrieved 2021-02-03{{citation}}: CS1 maint: others (link)</ref>
