HybridTech News, Nov. 23, 2016, by Chris Gromek.
http://hybridtech.us/room-to-grow/

"...it’s a brand new day for the electrical systems that serve marijuana grows and other indoor agricultural installations. And the lighting industry is taking notice. In March 2016, market research firm MarketsandMarkets released an analysis that forecasts a doubling in demand for grow lights worldwide between 2016 and 2022, with sales approaching $4.2 billion by the end of that period. More than half of that growth is expected to take place in North America."