|
Hi Bojan,
I think the problem here is the tariff of the electricity, namely, you arent getting back the electricity at the rate you are buying it, or vice versa..... also, nothing is technically being counted in either direction....
Consider mine: my solar meter is reading ONLY what my solar system is generating and therefore only goes up. Last time I looked at it about 6 months ago, it had generated over 2000 KWh and at my rate, of 60c per KWh, thats $1200....
When Integral Energy read the meters, (I have 3 phase) they tally up what we have used and then calculate the generated solar amount value and subtract that monetary amount from my bill. (generally about $300-$400 per quarter).
When you have a single meter that "spins" backwards when fed with solar, they have NO WAY of knowing just how much solar you have generated OR how much electricity the house has used, which are BOTH different rates depending on your deal.....This means, they dont know how much electricity you have used ("billings") and how much solar you have generated ("rebates") so their accounting system is all screwed up.
Therefore, they have probably "estimated" the usage based on historical data for the house (before the solar) and this is just a best guess because of the solar being connected to a non-compliant meter....
They need to know how much solar energy is being generated by consumer "grids" so they can report it back to the government as they have to PROVE how much their constituents are generating so they can satisfy the green generation percentage they are held to by the government.
Ultimately, you could also be diddling yourself out of money because if your house is not using any electricity and the solar is supplying power to the grid, then there is no way for the meter reader to determine what generation amount has come from the solar system, which ultimately you get back as a credit!
I have seen some houses in my area that have large roofs which have around 15-20 solar panels up there and I am pretty sure they are getting a CREDIT on their bills as their usage would be nowhere near the 3-4KWh per hour they would be generating on a bright sunny day....I've got 8 x 190W panels and clear skies generate instantaneous power of 1.4KWh and I have seen my house collect 11KWh in one day!
Hope this helps?
Cheers
Chris
|