I have a 3.9kW PV array on a domestic property in the UK. I don't use much of the electricity it generates so I am looking to get into ASIC mining with a single device. I have looked at the online calculators, but what puts me off buying something like a Antminer S9 (or S17 if I can get one) is the noise and the fact it'll only be profitable when it's sunny. This is because my electricity price is quite high at 0.15 GBP/kWh (0.19 USD).

I might build an insulated box for the noise issue or later on do some dielectric cooling. Suggestions welcome here though as the unit has to be quiet.

My real question though... Has anyone used, or is there, some kind of solar switching device that can push power to the ASIC miner when I am generating more solar power than I can use? Can these units stand a few daily power cycles and do they lose anything significant they have been working on if they are shutdown mid-calculation? Would this just be a daft thing to do?

Thanks in advance.