http://www.ibew.org/articles/19ElectricalWorker/EW1904/WhoWeAre.0419.html
https://www.insidesources.com/wind-solar-industries-pleased-by-dem-letter-supporting-clean-energy-tax-credits
https://www.forbes.com/sites/kensilverstein/2019/04/07/big-oil-is-feeling-the-heat-and-dipping-into-green-energy
https://www.fastcompany.com/90328169/these-huge-towers-of-bricks-are-an-ingenious-solution-to-our-energy-storage-problem
http://www.ibew.org/articles/19ElectricalWorker/EW1904/Inventors.0419.html