Lucang
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Lucang got a reaction from zsde in Flat Plate Solar Collector on top of roof, geyser inside roof. Is a pump really necessary?@rourke There seem to be only 2 MPPT controllers ( both around R3500 ) The Elon Smart and then Pi2RC ). Both are more or less the same, DIY friendly and very easy ( apart from getting on the roof and the COC part that I guess needs to be done to avoid insurance issues but that you can pay someone around R1000 afterwards to sign off ) . Solar Panels are around R1400 minimum and you need 3. Then there are brackets ( I estimate it to be atleast R600 ) and some wiring which is atleast R200 and lastly a fusebox for the panels which is a must (around R800 ) . This project is minimum R11k. My next concern is how long will it take to recover this. I estimate that this will save about 4 to 5 units per day of electricity in my casse, lets say 4, that is R13.50 on a good day so lets avg it out to R7.5 per day due to winter etc. That is 4 years if all else is equal. I am therefore also thinking of a grid invertor but I have a feeling if I do the math it will take even longer to break even and once you add batteries to the equation and expensive inverters something will definitely require replacing along the line. Tough decision to make if you look at it purely from a financial point of view like I do ( I work in Finance so it needs to make sense to me as well since loadshedding is no longer a factor )