Who gets the power

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Who gets the power

Postby Volcano » Wed Aug 03, 2016 10:25 am

Hi all,We have 16 panels (Ulladulla),we generate quite a lot and our use is minimal,we use 2.5- 3. Max KWh per day.Who gets the left overs of our power.We are with Origin,Endeavour power is the King pin in NSW.At the end of 2016,we will be on 6c a KWh,no dout we will get a bill,I hope you guys can work out what I mean.Many thanks
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Re: Who gets the power

Postby Gordon-Loomberah » Wed Aug 03, 2016 10:46 am

Do you mean you only use 2.5 - 3kWh of your solar output per day, or that amount of energy in total? 2.5- 3kWh would run a fridge, and a few lights and TV in the evenings, but not a lot more.

As you are connected to the grid, the electrons just get exported into the grid and supply your neighbours with green energy. That wont change when your GFIT reverts to a NFIT, however you will get paid a lot less for your exports.
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Re: Who gets the power

Postby Volcano » Wed Aug 03, 2016 3:45 pm

Thanks Gordon,I'm only going on Origins bill.Average daily usage 2.72 kWh.Our place is only 10 sq.We Can generate 600- 700 a quarter,last bill was,Export was 751 per quarter,we have a feed in Tariff,we have gas heating and cooking,end of the year we'll go all electric.Oh we DID have a water bed,so we had 16 panels installed.Many thanks.H
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Re: Who gets the power

Postby Gordon-Loomberah » Wed Aug 03, 2016 3:50 pm

Are you on the Gross or Net FiT now?
I'm not sure what the daily connection charges are there, but they must make up a fair proprtion of your bill.

Getting rid of the gas and using as much as you can of your own electricity production should reduce energy expenses considerably :)
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Re: Who gets the power

Postby Volcano » Wed Aug 03, 2016 3:59 pm

I think ours is feed in tariff,(maybe you call Net Fit)It all goes in and what we use comes out of that and we get payed for the rest @ 20 c kWh,and we get maintenance charge of about $70 quarter (that hurts).Cheers H
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Re: Who gets the power

Postby Gordon-Loomberah » Wed Aug 03, 2016 4:03 pm

OK, sounds like the NET FiT, so your 2.7kWh/day bill only represents imports, probably mostly your overnight usage, all the rest of your electric energy is provided by your solar array. :)
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Re: Who gets the power

Postby davidg » Thu Aug 04, 2016 11:02 pm

How much do get per kWh for exported power and how long have you had the system installed for? this should tell us if your on Gross feed in tariff (Gross all power is exported first at premium price typically around 60c per kWh) OR Net feed in tariff (use solar power first when available only export what you don't use), as it sounds like your not sure which one your on.
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Re: Who gets the power

Postby Volcano » Fri Aug 05, 2016 9:41 am

We use what we use and the rest we get 20C a kWh,we have had our system for about six Years,doing the sums we will miss out on 12 months,when they stop to 20c,but in the long run,we will get our money back.Cheers H
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Re: Who gets the power

Postby Smurf1976 » Tue Aug 30, 2016 8:56 pm

In a technical sense a grid connected solar system is just another power station, albeit a small one, operating in parallel with the rest.

For simplicity imagine the grid as a straight line drawn on a sheet of paper. Your house is connected to that, so is Loy Yang, Yallourn (both are major power stations in Vic) and every other power station in the grid as well as every load from big factories down to the street light outside your house.

Everything is at the exact same frequency in an AC grid and at any given time what's going in matches what's going out + losses. Assuming you're on the main Australian AC grid (Qld, NSW, ACT, Vic, SA) then whatever frequency someone measures at home in Brisbane will be the exact same frequency that exists at the generators at Bayswater (NSW) or Torrens Island (SA) power stations or an office building in Melbourne.

So you feed power in and that's exactly the same, albeit at a much smaller scale, as what a power station is doing. Power goes in, someone else is drawing it out. Who's doing what is irrelevant so long as the total quantities match.

So in practice the issue is a purely financial one rather than technical. Your solar system generates power and is synchronised to the grid. Your appliances draw power, also synchronised to the grid. All that's going to change is how much you are paid for power that leaves your premises.

From financial perspective if the rate you are being paid for power sent into the grid is less than what you're paying for power drawn from the grid then it makes sense to shift as much of your own consumption as possible to the times when your own power station (solar) is running, thus minimising both exports and imports. You can do this manually, eg set the dishwasher to turn on when it's sunny, or there are fully automated "black boxes" that can do things like turn your appliances on or divert any surplus (to your own requirements at the time) power you are producing into the hot water system (thus storing the energy as hot water and reducing power drawn from the grid to heat water with).

But in a technical sense, nothing changes at all.
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Re: Who gets the power

Postby Volcano » Wed Aug 31, 2016 9:21 am

Wow,thanks for that.
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