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If we were serious about solar PV
- Feb 21, 2023 11:35 am GMT
If we were serious about solar PV:
We would change some of our practices, and create new requirements, including:
1) Ensure that all the PV was installed to gain maximum solar irradiance and make maximum power. Priority would be given to south facing roofs, and new housing would require roof pitches that maximized winter solar production.
2) Panels would be backed with a coolant that would then be used to make hot water or space heat. Most panels have 3 times the thermal capability that they do electrical capability.
3) Inverters would be required to be grid forming and transfer trip switches would be required to be installed.
4) PV systems would be required to have storage and change to charging storage when the local voltage exceeded 130 volts (p.u.)
5) Roofs would be installed in new homes, such that installation of PV would not exceed any of the limits of the roof. Retrofits of roofs, when done, would require structural investigation and upgrades (OBTW - this would reduce storm damage to buildings from roof damage in a storm).
6) Panels would be assembled into 20-40-foot-long assemblies to minimize roof time for installers (Being on a roof is one of the most dangerous places to work according to OSHA). Assemblies would be pre-wired. Also develop robots to do the rooftop work.
7) Wiring would be required to be sized such that the maximum DC current did not exceed 80% of recommendation. (Reducing losses).
8) Install communications, cyber security, and remote controls in the systems. This allows maintenance contractors to clean panels and repair the system based on monitoring.
9) Require only semi-dwarf trees be planted in the solar path to the panels. Full size trees should not be allowed.
10) Do trade off studies for cooling vs. energy production for any dispute related to trees vs. solar.
11) Require that any retrofit of a building or new building include enough solar PV to meet the average diversified load for the building.
12) License installers and create truth in advertising laws for the solar salespeople. Train and certify local inspectors for solar.
13) Create standard contracts that are state approved for solar installation and disclose interest rates, and other charges.
13) Require everyone up to the current national electrical codes.
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