Hello all
after learning about this idea I’ve been wondering if it could be done on a single home scale. my thought was drilling boreholes in about a 50ft radius at a depth sized to storage load and insulate the top. charge the system during the spring summer and fall with evacuated tube collectors. but here in the pacific northwest we can go months with little sun so my thought was store heat all summer and use it in the winter. or does this technology only work at large scale.
http://www.dlsc.ca/how.htm
