Solar power – how is yours going? – Environmental Tips, Info, News & Questions

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Solar power – how is yours going?

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Guest_Cat©_*

Posted

27 December 2009 – 08:27 PM

Well I finally remembered to get out there and look at the daily solar power produced and work it all out. From what it appears (for this time of year anyway) we are producing 6.8Kw per day.

So the guy at Synergy said to work it out you multiply the current per Kw rate by the daily figure.

So 17.61 c including gst he said

x

6.8 Kw

That works out to $68.32 per 61 day billing cycle we are saving!!! WOW! thats great, more than I expected!

Obviously it will be less in winter but hopefully we can save at least $350 maybe $400 a year! Cool for a system that cost us nothing!!

So how is yours going? Our is a 1Kw system.


Posted

09 January 2010 – 09:07 PM

biggrin.gif

We’ve been on stand-alone for eight months now and I LOVE it! No bills! Although the continual cloudy days can be a bit irksome, but we just use less power. It’s worth if for no bills.


Posted

19 February 2010 – 11:34 PM

Our Synergy bill shows us the average daily consumption is 52 units, our most recent bill for $858 says we used 72 units a day
ohmy.gif

We are currently trying to get quotes to have solar panels installed but DH & I can’t for the life of us understand how to figure out how many watts, kilowatts, units etc we need.

It’s probably very simple but we just can’t get our head around it.

Basically:

What size system would we need for a 52 units a day power usage & to be self sufficient – no bill?

How in god’s name do people only use 8kw a day
ohmy.gif
SERIOUSLY??? Is 8kw different to units? What am I missing
huh.gif

Right enough babbling from me, I’ll just sit back and wait for someone to come explain it all to me
biggrin.gif

Thank you muchly

Sammy

Ohhhh please can you explain to me Cat@ how to work out the units we use?Our Synergy bill shows us the average daily consumption is 52 units, our most recent bill for $858 says we used 72 units a dayWe are currently trying to get quotes to have solar panels installed but DH & I can’t for the life of us understand how to figure out how many watts, kilowatts, units etc we need.It’s probably very simple but we just can’t get our head around it.Basically:What size system would we need for a 52 units a day power usage & to be self sufficient – no bill?How in god’s name do people only use 8kw a daySERIOUSLY??? Is 8kw different to units? What am I missingRight enough babbling from me, I’ll just sit back and wait for someone to come explain it all to meThank you muchlySammy


Posted

26 February 2010 – 01:59 PM

A 1kW system generates about 1600kW hours each year (the units on Synergy’s bills are kW hours) – this works out about 4.5 kW hours per day.  If your average daily consumption is 52 units (kW hours) then you would need a 12kW system.

Most people have a 1kW system.  We have a 2kW system and actually got a credit on our last bill.  We do use about 8kW hours per day but the 2kW system generates about 9kW hours per day on average.

Yes we live in a home and not a tent.  I’m amazed anyone could be using 52 units per day.  Do you have a ducted air con running 24/7?


Posted

13 March 2010 – 12:44 AM

QUOTE

What size system would we need for a 52 units a day power usage & to be self sufficient – no bill?

So, from the pp, you will need about 60 panels on your roof?
biggrin.gif

I would forget solar and get an energy meter and see where all your energy is being wasted.  A low energy using house (no aircon, conservative appliances, gas heating..) would need a 1.5-2KW system.  If you have ducted RC aircon, look at only using it in the rooms you use – my brother has a ducted vent in

his garage

so they dont have to walk from their cool house into a hot car or to the back fridge to get a beer.  I certainly expect their electicity bill to be enough to power a small nation.

Ask yourself how many fridges to you really need.  Do you need a bar fridge going all year around if its primarly used in summer.  Lots of ways you can cut electricity.

Kath

So, from the pp, you will need about 60 panels on your roof?I would forget solar and get an energy meter and see where all your energy is being wasted. A low energy using house (no aircon, conservative appliances, gas heating..) would need a 1.5-2KW system. If you have ducted RC aircon, look at only using it in the rooms you use – my brother has a ducted vent inso they dont have to walk from their cool house into a hot car or to the back fridge to get a beer. I certainly expect their electicity bill to be enough to power a small nation.Ask yourself how many fridges to you really need. Do you need a bar fridge going all year around if its primarly used in summer. Lots of ways you can cut electricity.Kath


Posted

12 April 2010 – 12:18 AM

I can see this is an old post but I thought I would add in how well ours is doing.

We have a 1 kW array and in the peak of summer we were getting about 6.5 kWh per day  (on a good day), and the FIT is 60 c/kWh in Victoria, we would typically use about 2-3 of what we generated and export the remaining 3-4. The winter in Melbourne is a different story but our system generates a bit over 1/3 of our total annual use.  Our annual daily average is about 7.5 kWh/day (6.5 in summer, 8.5 in winter).

Sammy – 52??? – sorry, how do you use that much?

Dry washing on the clothes line, set thermostat to 18 in winter, don’t use aircon, set washing machine temp to either cold or low, change light bulbs for compact fluoros, turn lights off, don’t leave TV on when you are not watching it (that includes the black screen when the DVD player has stopped).


Posted

16 April 2010 – 08:10 PM

We are really happy with our new system. We have had it in for 4 weeks and have made 230odd Kw already. We have a 1.5kw system with a 3kw invereter. We are lucky we bought a 3kw inverter as we regulary make over 1500Kw hours during the day. we were told we would make a max of 8 kw on a good day but so far we have made 10kw one day and 9kw for 6 days so it is great not have a ‘limit’ on what we make.

On average over the 4 weeks we have made 7.5kw per day.


Posted

16 April 2010 – 08:45 PM

We had a guy come out here for a quote to put panels on the roof & the power goes back into the grid. We didn’t realise it was like that & we thought it would be that the solar power went into the house & then put the excess back into the grid.

Umma

– is this what you have? I know you are in Vic, we are in NSW, but can you tell me the company who installed yours if that’s the set up you have.

I hope this makes sense,

Thanks.

Fi

ETA: Also, can you access the main line power if you run out of solar power?

Hi!We had a guy come out here for a quote to put panels on the roof & the power goes back into the grid. We didn’t realise it was like that & we thought it would be that the solar power went into the house & then put the excess back into the grid.- is this what you have? I know you are in Vic, we are in NSW, but can you tell me the company who installed yours if that’s the set up you have.I hope this makes sense,Thanks.FiETA: Also, can you access the main line power if you run out of solar power?


Edited by fionah, 16 April 2010 – 09:44 PM.


Posted

08 May 2010 – 07:28 PM

Yes you can access the mains power, most people will need to.  But what you can’t do is use the solar if there is a power failure withe the mains unless you have a stand alone system, this is a safety thing because if you are exporting and someone is working on the line they could get hurt.

Just an observation, there are a couple of people here who are confused about kW and kWh, it is a bit tricky to understand the difference but kW is a measure of the size of the system (eg 1kW or 1.5 kW or someone said their inverter is 3 kW) or the instantaneous power being generated and kWh is a measure of how much power was generated (or used) over a period of time eg a typical system might generate 6 kWh per day.  For example if you generated 750W for 8 hours the total power generated that day was 6 kWh (750 x 8=6000). Hope this helps.

Kelby – Wow!!

Fi- ours is a net system. We only get credit or feed in tariff (FIT) for the excess that we don’t use. In NSW you have the option for a gross or net system. Under a gross system you get paid the 60 c/kWh for all the electricity that you generate. This is obvious going to pay off your system much faster but it isn’t in general going to encourage energy efficiency. Our system was installed by a small local company.Yes you can access the mains power, most people will need to. But what you can’t do is use the solar if there is a power failure withe the mains unless you have a stand alone system, this is a safety thing because if you are exporting and someone is working on the line they could get hurt.Just an observation, there are a couple of people here who are confused about kW and kWh, it is a bit tricky to understand the difference but kW is a measure of the size of the system (eg 1kW or 1.5 kW or someone said their inverter is 3 kW) or the instantaneous power being generated and kWh is a measure of how much power was generated (or used) over a period of time eg a typical system might generate 6 kWh per day. For example if you generated 750W for 8 hours the total power generated that day was 6 kWh (750 x 8=6000). Hope this helps.Kelby – Wow!!


Edited by umma, 08 May 2010 – 07:30 PM.


Posted

21 May 2010 – 09:47 PM

umma – are you sure you get a choice between net and gross metering in NSW?


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