That's a cool product! I've got a used S19 on the way so was a bit worried about dropping it into oil so planning on using a hydro conversion kit instead.
We just had solar PV fitted with a battery but the heating system uses a gas combi for radiators and the HW tank so we can't easily dump excess solar into the HW tank. Not sure how much that would save anyway if there's little demand at peak solar.
I figured that a buffer tank is just an extra battery but way cheaper than an electric one. So hopefully we can run the miner when we're getting excess solar and use the cheap rate at night to "charge" the buffer tank. When there's demand for heating/HW the buffer tank can help the combi and save on gas.
Thanks for the link, there's a rabbit hole for me to go down on SN!
