25 Oct '13, 2pm

GM's 1.8 MW big solar field on Ohio factory will be state's largest

Let's see, 1.8 MW is 1800 kW divided by 21,000 panels which gives 85 watt panels. I presume they are talking about the instantaneous output at a light intensity of one full sun. They say that is enough for about 200 homes. 1800/200 homes equals 9kW, which I think is wrong here, in that the typical home uses about 9 or 10 kWhrs per day, not kW. So the array is 1800 kW times 5 hours ( I think that's fair estimate since it assumes really some lesser than full sun times over probably a longer actual production time) the array can generate more like 9000 kWhrs per day, which is enough for about 900 houses. You see kW is a power unit, not an energy unit. I think you guys are either catching on to Danny or you missed the point. This is GM doing a PR stunt to suggest they are environmentally friendly. There was supposed to be outrage at either the use of solar because it's some po...

Full article: http://green.autoblog.com/2013/10/25/gm-1-8-mw-big-solar-...

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