Doing some basic maths - one server and one PVR on 7x24. Average power 300W each. Electricity costs about 17c/unit (Kw/hr). That means the two servers are costing 0.6kW * 17c * 24 hrs * 31 days = $75.88 + GST = $85.37. Then cable modem and router - say 200w in total. That is .2kW * 17c * 24 hrs * 31 days = $25.30 + GST = $28.45. So to run the servers and networking I am spending at least $104/month!
Some thoughts on saving money
1. Stop the hobby!
2. Find a way to get the PVR (running gbpvr) to sleep and wakup on recording and then go back (haven't worked out how to do that yet)
3. Install a windmill(!) - I live in Wellington!
Other people's thoughts?