Despite the fact that we knew our previous electricity consumption and could work out roughly how much the GSHP had used (hugely more than predicted) Finn Geo wouldn't really accept that our consumption was a lot more than they had told us it was likely to be. They tell me my own meter must be faulty (it's being checked next week...) and they have put a meter on the GSHP as we asked them, so we'll be able to present them with accurate figures; if it continues to consume almost twice as much as they quoted, which I think ours did over the last year, then presumably either the machine is faulty or they have mis-sold it (and they will be continuing to sell to others using the same very optimistic predictions). 12k seems an incredibly huge sum for annual consumption. We'll have to wait at least 6 months now to get an accurate consumption figure but I'll keep you posted. Let's at least all hope for no more compressor, soft start or dirty water situations...