Hello, Intro: My name is Joerg and I live in southern Alberta, Canada. I am following the geothermal idea for now 30 years and I am getting close to saying good-bye to NG, but as always the problems come when one has a vision (and a stubborn mind). We build a new home with about 4800 sqft in 2010 and I had envisioned geothermal with PV solar then already, but the best quote I got was CAD120,000 additional to our budget. You all will understand that this would buy lot of energy, particularly in Alberta, where we, literally, sit on the stuff. So, the idea was dropped in 2010, but our house and workshop is heated with in-floor water heat and radiators in the second floor. All heated with one 250,000 BTU NA boiler in our house and a 125,000 BTU in our shop, 60'x80', 18 eve. The house boiler kept up easy when we had -40°C, (-40°F) this past winter, but the shop boiler was running steady. Now, -40 is probably the coldest we have had in a long time, but nerveless, it showed us it can happen. I have 21.2kW PV production in my yard, more then I need and could run a heat pump theoretical free of energy costs (debatable, I know). Now to my thought and I know nothing about sizing the needed energy to meet my peak demand, but here is my thought in order of approach: Drill one 100m (330') deep well with core samples to check the formation we are dealing with and insert a Temperature probe with sensors every 10m (33') to be able to check the sub temp.s now and later. Once this is done, the structure and possible water movements are cataloged, I am planning to drill four wells around this first well in 3-4m (10-13') distance to the same depth (or adjusted depth if so told by the first test well) and insert one 1" closed loop in each hole. Second step: install evacuated solar panels to match the four wells to bring energy in to the boreholes in the summer and extract it when needed with a suitable heat pump. I know of one site that works like this, but can't get connected to the people that operate it, it is called 'DRake Landing' and can be seen here for awhile longer: https://dlsc.ca/dashboard.htm Now the setback: I received my first quote for the drilling and installing of the loops only, no hardware included: CAD117,000 plus three days room & board for the crew and meals. The total would probably run around CAD140,000 without connection the systems, switch gear and heat pump. Please give me your comments, hints, directions, links etc. Again, I am older, but never saw 'no' as an option. JoergK.