Tuesday, November 4, 2008

Solar Power

We had a 1kw solar power system installed on our roof yesterday (3.11.08). For our latitude etc we have an excellent orientation with our roof at 26deg pitch and only 4deg off due north. And that's almost as technical as I'm likely to get. A government rebate brought it into financial reach and we thought that with the likelyhood of the price of energy going up by 30% or more in the next few years it would be a good idea. We sell electricity back to the power company so our overall bill will be reduced. Hopefully we will be able to add more solar panels eventually. It is cold, rainy and partly cloudy today but we are generating around 470 watts. My husband said that with daylight savings we should get an extra hour of sunlight and generate even more *lol*.

Here is the control box installed in our garage.

The reading on this day was better with the sun shining. Here is a close-up of the panels on the day of installation.
My husband Max is now going to add some technical details so he can direct people to my blog if they want information.
The system is a 1kw Grid Interactive Solar Power Generator. This means that it does not store energy in batteries but sends any power we are unable to use at the time into the Power Grid. As you can see from the photo there is an array of six solar panels on the roof. They are connected in series and can generate up to 225 volts at 5 amps DC. The voltage from the panels is fed into a Fronius Grid Interactive Inverter which converts the DC voltage into 240 volts AC and inserts it into the electrical switchboard where it is used by our appliances or lights and sends any extra power into the Western Power Electricity Grid. We get paid for the power we generate and send to the Grid as it is considered "Green Power" and we also have been issued with 21 RECs (Renewable Energy Certificates). The system we purchased is upgradable to a 2kw system by the simple addition of 6 more solar panels. The Grid Interactive Inverter is a Fronius I20 made in Austria and the solar panels are made by Nesl Solartech of China type DJM-170D. The system was supplied by Renewable Logic of Bayswater after we saw the special deal that was being offered when we attended the 2008 Perth Sun Fair at the University of Western Australia.
Cheers
Shari (and Max)

2 comments:

Lurline's Place said...

Silly girls we are - we should have had a Sewing Day - lots of people seem to be at home! Nice to see you are saving energy!
Hugs - Lurline!

Christine said...

We have signed up to get the Solar too, but have to wait as the company is soooo busy.
Did they tell you how much off your own electricity use this will cover?

cheers
Christine

Maukie - the virtual cat

Mumsyblossom's World