Could you build a PSG with an RMH whose exhaust piped underground into a manifold or looping series of pipe like in the Ceres Greenhouse Systems? What would happen if you could use all that extra heat and pump it into the soil?
Could you get a cheap, tropical greenhouse even in the northern reaches?
I thought it was a bear, but it's just a tiny ad
Your suggestions have been mashed into the PIE page - wuddyathink?