For those interested, here are some details about my
Scroll down to see
about the system, last entry 11.2.2012
of CO2 are saved every year
partly cloudy, as you would expect!
observed was 1102W.
the power was around 300W,
I was impressed.
it had collected 6 kWh, worth AU$
was going backwards quite
often, what fun to watch!
stainless steel fittings.
Feb. 13. 2009, partly overcast
day, even some rain. Maximum observed solar power input 1102W.
Collected Energy this day:
Collected Energy since Feb.
11. @ 4pm:
Feb.14.2009 was a dead loss.
Very cloudy all day. Produced only 1.2kW
Feb.15. 2009 , 6kWh
on a sunny day.
A pattern seems
Feb. 16. & 17.
Feb.18. 2009, exactly 1
week since installation.
the new digital
power meter was installed by Western
advantage to me. You only really
need it if you would want
will cost me another
$655+ but I had no choice. Western Power
hrs "light time", or 7 days,
my panels have produced 35 kWh of energy.
day was cloudy with even
some rain, 2 days were partly cloudy.
this would be the average
over the year (unlikely), it would produce
total value of $255 or $42.5 off each power bill.
(that's with 1
kWh costing 14c)
years to break even for my
investment, the government rebate not considered.
will save tons
of coal and
greenhouse gases and support
know that electricity
prices will soon rise to reflect a more
With more decentralised
renewable energy we may need less substations,
maximum usage is really happening with lots of
Air Conditioning on hot
From what I've heard many
areas in Perth are already in dire need for
From now on I will report in longer intervals.
the system (Showers today)
Total Electrical Energy
Total hours of useful
daylight: 178 hrs
The new meter was
installed for only 1 week
energy taken from the grid
Total energy fed back into
the grid : 14 kWh
Average daily units to pay:
Average daily units I sold: 14/7
= 2 kWh
(this means that I used about 3
Average daily units produced form
sunlight: 69/14 = 4.93 kWh
I must have been conservative in
power use, cause normally the
average daily consumption was 15kWh.
: 23 kWh
System has produced
94.5 kWh over 246 hrs since installation
taken from the grid was: 290 kWh
Total energy fed
the grid : 81 kWh
The System has produced 234.2 kWh
over 600 hrs since
average the panels produce 0.390kw
I could track the sun I
estimate to be able to raise this figure by 33%.
A big letdown
is that I will have
to pay $655 for a new meter I don't
advantage it gives me, or
the government, is that it measures
the energy I feed back in the grid.
For me it
opens the option of
switching to Smartpower,
I will look into this option after I
have more data. Smartpower
has a different tariff depending on the time of
would be happy to just have the
meter run backwards. I will not
produce more than I use anyway. I don't need to
especially since they want to read the meter every
month now. What for?
A $30 bill for me to pay?
turned out not to be the case.
the government decide,
however, to make Synergy pay me a
lot more for the delivered energy (like in South
Australia) , the new
meter could be paid in less than 5 years.
Here my first
because of the new
minus directly used
366+79 = 445kWh = 7.6 kWh/day
Sold: 91 kWh = 1.57 kWh/day
This brings my energy consumption back to about 6kWh/day.
Last year same time it was 11
Not bad, especially since we are really 2
Today 29.May 2009
was a sunny day. Collected only
proper tracking it would be 5 kWh
power , meter display
107, is 134 kWh
power, meter display 07,
is 822 kWh
Today 17.June 2009
was a sunny day. Collected 2.71
power is 141 kWh
do need tracking....
After a long winter
is a milestone.
crossed the 1
Of which this much was sold to Synergy:
exactly a fortune, but
A refund for the new 3 phase meter.
The installation cost (I
paid $655) , after reviewing their fees and
charges, has been found to
be lower than thought!
Thank you every one who
complained about the ripoff!
Now there is
a letter from the
WA government that says:
So $1083 is
supposed to compensate
me for not getting a proper gross feed-in
- March 2010
- June 2010 $130 (got that)
2010 - December 2010 $301
2011 - December 2011 $ 652
I also may be
receive the new net feed-in
tariff from July 2010 on. How about that!
Read up on http://www.clean.energy.wa.gov.au/pages/re_feed-in_tariff.asp
2 years since installation
Reading on the inverter is 3076 kWh
over 8574 h
The sytem procuced
kWh/daylight hour on
Sold to Synergy was
Total bought from
This means I used alltogether 9709
kwh ( 7578(bought)+3076(produced)-945
included) over 2 years
which is 13.3 kWh/day
net usage over 2 years is about 10
of my electricity use is produced by the sun
of the electricity I collect from the sun is
sold to Synergy
3076 kWh * .09
kg/kWh = 277
kg of CO2 proportionally
goes into the production of my solar cells,
according a studie of Prof.
3076 kWh * 1 kg/kWh
= 3076 kg of
CO2 would have been
created by coal power plants
2800 kg = 2.8 t of CO2
over 2 years was
saved by installing just 6 Photo Voltaic panels
3 years since installation
Produced electrical energy is 4558 kWh
bought from Synergy since installation
So, all is
stable, it produces about 1.5 MWh/year
Assuming $ 0.46/kWh I made $653 selling
and with $0.21/kWh I saved $659 by using solar
which makes $1312 income over 3 years
Without the special feed-in tariff it would
generate $315 per year
At today's prices that's OK but with what it
has cost 3 years ago, well let's not talk
Thanks for dropping in!
Any comments please email Tony at