A transpirant insulated green house with extra heating from sun or wind energy.
With solar panels or wind turbines powering electric boilers or heaters.
Especially for in fall and winter time. Together with lighting.
And its important that there is enough air moisture.
Other:
Extra heating from the sun is possible with long and or broad black basins with water, pipelines and a pump for pumping the heated water through the green house.
But this only works in warm climates or in around spring and summer time.
By JK in november 2016
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