@ammulderI know that’s about utility solar, but it makes me think... I would love a solar roof, and I wonder... would it be worth maxing out the percentage of energy generating tiles to sell back to the grid on peak days? To charge multiple EVs in the future? To maximize the change of powering the house through the winter?
i'm unsure if it's about utility per se. Richard Perez had article detailing blackout of NE US and parts of Canada way back when, pointing out that blackout could have been avoided by ~1/2 gigawatt of PV, distributed over the region/area
There are 2 Perez's in that article.
Richard has been in field a very long time
as a single data point myself, I went with 37 Enphase IQ7 microinverters and 37, 315 watt Hanwha Q.Peak Duo panels for 11,655 DC, derated 15% to 9,907 AC so I'm Tier 1 under 10 kilowatts (florida) so way less paperwork
my bill went from around $90/$100 per month to $21.69 (minimum charge with connect fee)
HOWEVER, I love swimming in ~87 degree plus pool (arthritis) so I need another 3-5kilowatts PV plus battery since I sell excess electrons at around 2 cents in the day and buy them back at night at ~8.6cents
my PV array 2 years ago cost $2.40/watt ($1.68/watt with 30% US federal tax incentive) and costs are lower
I also store electrons in my PHEV (a car wreck forced me to get a vehicle before I could get a Model 3)
I have always believed in oversizing PV arrays, as the article point out, the energy is _free_
(i made 17.2 megawatt hours in 2019 and 17.4 megawatt hours in 2020)
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