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Solar Power for domestic Use
Rank: Elder Joined: 7/26/2007 Posts: 6,514
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newfarer wrote:KulaRaha wrote:I installed a 300 litre solar water heater in my house 5 years ago. Cost me 120k back then (I hear prices have dropped). My power bill dropped by 45% in month one, and has remained the same within 10% of that through power price hikes and dips. I have recently added 2 instant showers as I have a large family and many guests. No effect on monthly bills.
A friend built his home in 2007 and installed a full house solar system from Australia. Cost him 1M. His power bill is 200 bob monthly and his home is bigger than mine. Your friend must have already recovered his 1million investment by now. Just dispelling the myth that payback is 25 years. At our local power prices, its much much shorter. I am now looking for a similar system and understand the best come either from Australia or Texas. Business opportunities are like buses,there's always another one coming
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Rank: Elder Joined: 2/16/2007 Posts: 2,114
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@kularaha,
How do those things look like on the roof,ie both the one you have currently and the Australian one?I find them to be an eyesore at least in an an urban setup..
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Rank: Veteran Joined: 8/30/2007 Posts: 1,558 Location: Nairobi
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300litres. Would be for how many people roughly?
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Rank: New-farer Joined: 2/22/2015 Posts: 61
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KulaRaha wrote:I installed a 300 litre solar water heater in my house 5 years ago. Cost me 120k back then (I hear prices have dropped). My power bill dropped by 45% in month one, and has remained the same within 10% of that through power price hikes and dips. I have recently added 2 instant showers as I have a large family and many guests. No effect on monthly bills.
A friend built his home in 2007 and installed a full house solar system from Australia. Cost him 1M. His power bill is 200 bob monthly and his home is bigger than mine. Interesting information. A few questions: 1) Is the water heating purely by solar or it's boosted by electricity? 2) What's the average water temperature achieved during 'peak/offpeak' sunshine seasons? Only Fools Have No Plan B
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Rank: Elder Joined: 12/25/2014 Posts: 2,301 Location: kenya
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lekamu wrote:KulaRaha wrote:I installed a 300 litre solar water heater in my house 5 years ago. Cost me 120k back then (I hear prices have dropped). My power bill dropped by 45% in month one, and has remained the same within 10% of that through power price hikes and dips. I have recently added 2 instant showers as I have a large family and many guests. No effect on monthly bills.
A friend built his home in 2007 and installed a full house solar system from Australia. Cost him 1M. His power bill is 200 bob monthly and his home is bigger than mine. Interesting information. A few questions: 1) Is the water heating purely by solar or it's boosted by electricity? 2) What's the average water temperature achieved during 'peak/offpeak' sunshine seasons? Also wanted to find out the guy who used 1 m from Australia ,how many watts can his solar support . Can it support fridge ,tv,oven ,bulbs and all that just depending entirely on solar or there is a back up from main grid . Reason is for 200 a month is a little bit confusing because I'm sure the solar works only during the day but at night to run all those appliances can't make you have a bill of only 200.please explain further
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Rank: Elder Joined: 2/26/2012 Posts: 15,980
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enyands wrote:lekamu wrote:KulaRaha wrote:I installed a 300 litre solar water heater in my house 5 years ago. Cost me 120k back then (I hear prices have dropped). My power bill dropped by 45% in month one, and has remained the same within 10% of that through power price hikes and dips. I have recently added 2 instant showers as I have a large family and many guests. No effect on monthly bills.
A friend built his home in 2007 and installed a full house solar system from Australia. Cost him 1M. His power bill is 200 bob monthly and his home is bigger than mine. Interesting information. A few questions: 1) Is the water heating purely by solar or it's boosted by electricity? 2) What's the average water temperature achieved during 'peak/offpeak' sunshine seasons? Also wanted to find out the guy who used 1 m from Australia ,how many watts can his solar support . Can it support fridge ,tv,oven ,bulbs and all that just depending entirely on solar or there is a back up from main grid . Reason is for 200 a month is a little bit confusing because I'm sure the solar works only during the day but at night to run all those appliances can't make you have a bill of only 200.please explain further 200 a month must be the miscellaneous KPLC charges. I hve not yet come across a "cheaper" solar power installation that runs a TV, radio, fridge, and heat water, occasionally heat a room esp if you are a mountaineer or run a cooling system if you are at the coast or lakeside. "There are only two emotions in the market, hope & fear. The problem is you hope when you should fear & fear when you should hope: - Jesse Livermore
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Rank: Elder Joined: 7/26/2007 Posts: 6,514
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Chaka wrote:@kularaha,
How do those things look like on the roof,ie both the one you have currently and the Australian one?I find them to be an eyesore at least in an an urban setup.. Mine looks ok, the tank is relatively ugly but the solar tubes are fine. It is on my roof. For the Aussie one, he has put an array of panels in the garden behind his house, so is not intrusive. Business opportunities are like buses,there's always another one coming
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Rank: Elder Joined: 7/26/2007 Posts: 6,514
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Horton wrote:300litres. Would be for how many people roughly? For me, the 300lts manage two showers quite well, total of 3 adults. But 2 are women, so you know they take longer...  Business opportunities are like buses,there's always another one coming
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Rank: Elder Joined: 7/26/2007 Posts: 6,514
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lekamu wrote:KulaRaha wrote:I installed a 300 litre solar water heater in my house 5 years ago. Cost me 120k back then (I hear prices have dropped). My power bill dropped by 45% in month one, and has remained the same within 10% of that through power price hikes and dips. I have recently added 2 instant showers as I have a large family and many guests. No effect on monthly bills.
A friend built his home in 2007 and installed a full house solar system from Australia. Cost him 1M. His power bill is 200 bob monthly and his home is bigger than mine. Interesting information. A few questions: 1) Is the water heating purely by solar or it's boosted by electricity? 2) What's the average water temperature achieved during 'peak/offpeak' sunshine seasons? I use the pure solar option, but there is a switch to turn on the heater built-in for those cloudy days. For peak sunshine, it goes to 70C, and offpeak hovers around 40s, so rarely do I have to turn the electric heater on. Business opportunities are like buses,there's always another one coming
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Rank: Elder Joined: 7/26/2007 Posts: 6,514
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enyands wrote:lekamu wrote:KulaRaha wrote:I installed a 300 litre solar water heater in my house 5 years ago. Cost me 120k back then (I hear prices have dropped). My power bill dropped by 45% in month one, and has remained the same within 10% of that through power price hikes and dips. I have recently added 2 instant showers as I have a large family and many guests. No effect on monthly bills.
A friend built his home in 2007 and installed a full house solar system from Australia. Cost him 1M. His power bill is 200 bob monthly and his home is bigger than mine. Interesting information. A few questions: 1) Is the water heating purely by solar or it's boosted by electricity? 2) What's the average water temperature achieved during 'peak/offpeak' sunshine seasons? Also wanted to find out the guy who used 1 m from Australia ,how many watts can his solar support . Can it support fridge ,tv,oven ,bulbs and all that just depending entirely on solar or there is a back up from main grid . Reason is for 200 a month is a little bit confusing because I'm sure the solar works only during the day but at night to run all those appliances can't make you have a bill of only 200.please explain further His whole house runs on solar. The way it works is the panels charge an inverter that then gives you power during night hours. I will ask him what the 200/= bill is for. Business opportunities are like buses,there's always another one coming
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