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Our dishwasher heats the water if it's not hot enough, at full price, so we use a short cycle & hot fill because the water was either heated free from the sun or at least off peak tariff from AGL. Can your dishwasher wash in cold water only?, You must use a longer cycle to achieve good cleaning.
Mine is set to hot water fill at all times. I'd check out that logic with your son because that doesn't sound right to me. If your HWS heats at tariff 33 that has to be cheaper than daytime electricity. The amount of energy required would be the same IMO. I even make sure that the dishwasher runs at night so it doesn't rob any of our solar contribution, as we make a dollar or two from solar at present.
Thanks for the info Trev and Phil either way i don't think the figures add up in Tassie (Not so much the quality and amount of Sun as other factors like the rebate amount)
The rebate deals are different in each state and are latitude dependant. Tassie has hydro, which is about as green as you can get too.
On that point, we'll have to differ.
Are you reimbursed for Gross KWh or Nett. We only get Nett in SA.
Update: I've been offered a 1.5 KW sytem + 2 KW inverter for $2500 and am negotiating to make it a 1.9 KW system with 2 KW inverter for $3000 (A crowd called Ultra Greensun) The electrician is apparently coming this week for a look.I would Ideally like German made SMA Inverter and German Panels but that would be twice the price from other quotes I am looking at.. Not paying $5,500 or $6000 We have double glazed windows everywhere and use 99% low voltage light Globes 7w - 14w maximum. Using energy saver master/slave powerboards with our two main entertainment set ups and recently in my office too (so taking this pretty seriously)Apparently, and I've been told this by a couple of different sources, our temperate climate means the efficiency loss due to the latitude is somewhat offset by the low number of days where the panels are heated past their optimum efficiency temperature (if you get my drift)