Hot yoga vs Room Temperature , energy concern

Ok , I ve been teaching/ practicing hot yoga for 7 year . I have became more aware of evironmental concerns and my carbon footpint .Since most electric companies get there electricity  from coal fired plant which are one of the biggest contributors to global warming / climate change .

If a yoga rooms normal temp is 68F then it gets boosted up for hot yoga  at 105F = 37F diff… say 8 times a day 7 days a week . That's  thousands and thousands  watts of power > carbon emissions that are added onto the depleting Ozone .
Can one still get a healthy work out with the ancient yoga practice without heating it up ? Or does the hot temp bring that many more health benefits?
 We should start measuring the amount of sweat vs the damage it does to the atmosphere . I feel the yoga community should be more responsible and  take action on the sustainable front . Actions like adding solar /wind power  to reduce their carbon footprint . Yea purchases may be  pricey but a bold move .  Some  governments have tax credits , loan plans, etc..

 Hence marketing a hot yoga studio 'we breath the solar way ',green yoga', you get the picture …. the consumers would get  your commitment to well being coupled with a  care for  the environment which is our children's  future to.  For the earth , Edward