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Wall mounting solar panels

  • 17-10-2021 11:35am
    Registered Users Posts: 41

    Has anyone looked into or mounted solar panels on their walls. This person in the UK has a south facing wall and installed on their wall and says due to the angle in winter they are performing well. I was thinking it could be an option to add more panels when roof space is fully unitized and ground mount is not an option. I wounder if irish installed would be keen on it and if you wanted to get planning permission or retention fi there would be an issue 😃

    Video discussing the install and production.


  • Registered Users Posts: 19,415 ✭✭✭✭cnocbui

    Solar panel hobyists tend towards living a fantasy. 'Performing well in winter' - I'm sure the raving pratt has to don sunscreen in December to avoid sunburn on the small amount of skin not covered for warmth.

    A wall mounted panel is going to generate feck all in winter and just as feck all in summer on the rare days it's not cloudy.

  • Registered Users Posts: 2,331 ✭✭✭bullit_dodger

    I like what he's done there. If your not doing this via a BER grant, I'd say there's little/nothing to worry about other than wind. With the panels effectively being a "sail" you'll want to make sure that they are adequately bolted in place.

    One slight improvement, i'd try to have them angled them 10-20 degrees away from the vertical (the plane of the wall), in winter this won't make much difference, but in summer those panels due to the "angle of incidence" will be producing little.

    At Dublin latitude (53 deg North) in June the sun will be 23.5+52 = 76 degree from the horizontal at midday. So Cos(76 deg)=24% production. If they were 20 deg sloped. that would increase to Cos(56 deg) = 56% production. 20 deg slop would also improve very (very) slightly in December too.

    But I can appreciate that you want it to look somewhat decent too....only suggesting it as an improvement.

    Also agree with cnobui that with the dark cloudy days in winter.....was more commenting on efficiency rather than reality, but I do like the idea that he's trying at least