Quote:
Originally Posted by tlgerdes
Are you sure? If you are on the 66c/khw. then you should be sending 100% of your power to the grid, as it should be gross metering. You then buy back everything you use from your electricity company. You might have a Nett invoice (what you feed vs what you consume) that indicates a cost difference of 70% of the value.
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The way the system works is that the power output from the solar panels goes through your home FIRST, and if you are using any power it is consumed, and the excess is then recorded on your Bi-directional meter as a separate tariff reading.
The only way you will get 100% is to shut everything off in your home when the sun is out. No fridge, no power usage at all.
My household has generated about 11,000 kWhr so far since we installed it. About 8,500 kWhr has been recorded by the meter as generation back into the grid - that amount is credited to our account at 60 c/kWhr (and now its 66 c/kWhr). The remaining 2,500 kWhr was consumed by our household as free power.
Economically it's best to put as much power into the grid as you can while the sun is shining, that way you get the maximum rebate at 66 c/kWhr. Changing your habits like doing your washing and running your dishwasher at night during the cheaper off peak power period.
In about 18 months the entire system should have paid itself off (ie the premium solar rebate will pay it off - a tariff in Victoria that will last until 2023).
happy with the system - the SMA SunnyBoy inverter is first class German technology. The only regret I have is not going for the maximum 5 kW solar system.