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tuco wrote:You could consider doing actual measurements in your location. This way you will be able to calculate return on investment quite precisely. Over here companies who offer solar systems for home use also offer such service, along with solar calculators. If I had money to invest, this would be on top of my priority list.
The_Metatron wrote:tuco wrote:You could consider doing actual measurements in your location. This way you will be able to calculate return on investment quite precisely. Over here companies who offer solar systems for home use also offer such service, along with solar calculators. If I had money to invest, this would be on top of my priority list.
Yes, some sort of site survey is certainly required. That can very accurately quantify how much energy I can collect.
On what I'm going to have to guess is my energy requirements. I haven't lived in this house long enough to have my own records. Time to call the power company...
Macdoc wrote:Your first goal is to improve your insulation ....there are infrared meters you can get to identify areas needing better insulation including windows where you can change the glass to better stuff.
Panels are cheap, BUT you have to go off grid otherwise you are into feed-in tarrifs. WIth panel costs so low and you doing install I'd bet 5-7 years is achievable once you button up the house.
The_Metatron wrote:My next upgrade, before the solar system comes online, should be my electric water heater. It's a standard resistive heated water heater. The new hybrid resistive/heat pump water heaters use 75% as much energy. There isn't much I can do about my clothes dryer except to not use it. Likewise with the clothes washer, we don't wash with hot water unless it's really necessary. It hasn't been, yet.
Adco wrote:The_Metatron wrote:My next upgrade, before the solar system comes online, should be my electric water heater. It's a standard resistive heated water heater. The new hybrid resistive/heat pump water heaters use 75% as much energy. There isn't much I can do about my clothes dryer except to not use it. Likewise with the clothes washer, we don't wash with hot water unless it's really necessary. It hasn't been, yet.
I installed a timer for our geyser. I turn it on from 5-7am and then from 5-7pm. I saw a drop of R400 (about 10%) off our bill the next month and it has been down since, about three years ago. Also try turning the geyser temperature down if you can. Even a 5 degC will make a difference.
Another thing to try is double glazing. A lot of heat is lost through windows. The glass is a fairly good conductor of heat and an air gap between two panes helps buffer that transfer of energy. I am going to try that at my house. Our bedroom is freezing in the winter and our windows are perfect for adding another sheet of glass separated by a 5mm strip of wood. Cheap enough to experiment with. Only R650 for a 1.8m x 1.4m sheet of 3mm glass.
One more place to insulate is the roof cavity. Apparently that stops heat transfer in the summer.
The_Metatron wrote:Here I am, making tea and charging my iPhone off-grid:
Let the sun do some goddamned work for a change.
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