> Solar system saving calculator
This calculator will help you work out if installing a solar panel power system is financially worth the expense or not. It will tell you how long the system takes to break even (the payback period) and how much money you could be saving over its total life. Great for checking a solar quote.
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Comments left
- Ali said:
Hi can I download this calculator, it is very helpful. Please send me a link to download it on desktop and use it. Thankyou
ON Mon, 4 Oct 10, 2:10am probably from Australia Reply to this comment
- Darren said:
Why does the "break even" line in the table change when i change the 'opportunity' interest rate? It shouldn't matter what other opportunities are for the system to break even... Darren.
ON Sat, 30 Oct 10, 7:58am probably from Australia Reply to this comment
- Eco Guy said:
ah, well spotted; fixed.
ON Tue, 2 Nov 10, 4:42am probably from Australia Reply to this comment
- Eco Guy said:
- Peter said:
Hi, I am trying to model a gross FiT that would run for some years then revert to net. During the gross period the monthly return line curves upwards. I don't understand why it is not flat. Surely on a flat gross tariff the income is exactly the same each year. When it stops and net takes over there should be a step to wherever bill inflation has taken the net value to. Thanks, Peter.
ON Fri, 1 Jul 11, 10:51pm probably from Australia Reply to this comment
- Mac said:
Hi, great calc but freaks out at 99kW system putting out 129000 kW / annum. Throws out infinity symbols. please fix.
ON Fri, 15 Feb 13, 12:58pm probably from Australia Reply to this comment
- Mac said:
even a 70 kW system is maxing this out and resulting in the infinity symbols instead of answers. please adjust this useful calculator.
ON Mon, 18 Feb 13, 12:48am probably from Australia Reply to this comment
- Eco Guy said:
Hi, Now fixed - goes up to Mw...
ON Mon, 25 Feb 13, 8:55am probably from Australia Reply to this comment
- Eco Guy said:
- Mac said:
brilliant! thanks Eco Guy!
ON Wed, 27 Feb 13, 9:22am probably from Australia Reply to this comment
- Mac said:
Sorry Ecoguy, but it seems the calc has more errors... try a $60000 system that puts out 30000kW. Calcs gone all askew. thanks
ON Sat, 2 Mar 13, 12:46am probably from Australia Reply to this comment
- Eco Guy said:
it will now adjust units to suit magnitude, i.e Kw Mw etc
ON Sat, 2 Mar 13, 11:41pm probably from Australia Reply to this comment
- Eco Guy said:
- Mac said:
Thanks Eco Guy, much appreciated. Legend!
ON Sat, 16 Mar 13, 7:57am probably from Australia Reply to this comment
- Mac said:
It's almost there but still throws the infinity errors in the fields Total not spent on grid power, Total gained, and Total amount gained (-lost) compared to capital in bank.
Try 99.98 kW system and $200,000 over 30 yrs, 136,000 output/annum, 25c, 4% returnON Sat, 16 Mar 13, 8:59am probably from Australia Reply to this comment
- Dorian said:
Hello Eco Guy,
I would like to see if I can purchase a custom version of this calculator in excel with some minor additional information such as inflation data, etc. I am located in Brazil and need a version in portuguese. I can of course do the translation.
Please contact me as soon as possible.ON Fri, 15 Aug 14, 8:17pm probably from Australia Reply to this comment
- Shiz said:
Great calculator. Can you please modify it to factor in panel degradation over time?
ON Thu, 12 Feb 15, 12:15am probably from United States Reply to this comment
- Lee said:
We have Net metering. Our utility just sends a credit bill in the summer. No showing how it is calculated. So I will have to calculate each months feed into the grid by subtracting how far backwards their meter ran. Its the only way I can think of to see how much per kwh they are paying me and the percent of my electric generation i am NetMetering/Tariffing and getting paid for. Is that the correct way to put in the Tariffing values?
ON Sat, 3 Oct 15, 4:51pm probably from United States Reply to this comment
- Jake said:
Suggestion for price saved on grid power be affected by percentage of power going to grid for better accuracy of calculations
ON Thu, 10 Mar 16, 7:11am probably from Australia Reply to this comment
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