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Roof is easily accessible with a ladder and it’s a one level house. I just used a window cleaner chemical similar to windex. Took about 20mins. The solar panels were a bit dusty. I could see it from the ground level. I’m just not sure what the proper cleaning chemical is to use for solar panels. J.
An Oxford study said that it would take the power of 4000 homes to charge a Tesla semi. I ran the numbers myself and found that solar panels on 5 or 6 rooftops would supply enough energy for a Tesla Semi's annual needs (link). The Oxford study seems to be framed to put the Megacharger's needs...
This is why when I put in my solar, I told the folks I wanted the largest inverter I could buy, incase I wanted to put more panels on. In my case 47 panels, with a solaredge 11400 inverter. During certain peaks in summer, the inverter would hit its limit even though solar could produce more.
The frame of the roof, columns and foundation has to be solid and probably in steel: ~$1k. The solar panel on the roof will have the size of 6 x IBC Poly 275 CS5 (992mm x 1650 mm), just to have some comparison Tesla should match: ~ $1k. Battery, charger, inverter and all other electronics should fit into the frame of the foundation: ~$1k.
Bottom line: Tesla has a surfeit of potential customers and is choosing SOP/cookie cutter installs at the moment. So, yes, your options are a cheap $10k roof that will get torn off in favor of a solar roof (and add to the cost), or putting on a "traditional" roof and getting solar whenever Tesla gets around to it.
For small angles cosine is still near 1, e.g. if you were off 30 degrees (your panels normal is 70 degrees above the horizon (20 degree roof slope) instead of, say, an optimal 40 degrees), cos (30 deg) = 0.866, and you lose about 14% off your annual production. Cheers, Wayne. ftrv8 and BGbreeder.
Cost us around £1k to fit bird proofing as we had to get scaffolding put up due to the nature of the roof. And get decent bird proofing, not just some flimsy mesh, as they can sometimes break through, and then you have a real issue. There’s a house nearby where the mesh hasn’t held and it’s a full on pigeon hotel.
Install was completed in 1 day (7 AM to 4 PM). The crew were all pretty enthusiastic about the work and Tesla in general. Some have been with the company since the Solar City days. They had 3 licensed electricians working the Powerwall install and 4 guys on the solar install.
In my opinion, Tesla is the best at solar and battery. Here’s the problem: I’m having a very difficult time getting an “in my opinion” a “solar design that make sense” for flat roofs from Tesla Solar. Their solution is 68% ROI and flat panels on a flat roof for 50k. I have over 3000k square feet of roof space, the design uses 50% of ...
May 4, 2021. #1. I'm going to go with a dark gray/charcoal standing seam metal roof. There will be zero mystery about long term performance of the roof system and PV system. PV mounting system will clamp to standing seam meaning zero roof penetrations. Panasonic HITT 96 cell panels with ultra low .26% annual degradation after 1st year.