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Often, utilities and laws make it irrationally difficult to use solar and grid at the same time. You'd need a grid tie system (if permitted), or loads that you
by mwint 4y ago
Often, utilities and laws make it irrationally difficult to use solar and grid at the same time. You'd need a grid tie system (if permitted), or loads that you can run off solar alone (not connected to your home wiring).
I can totally see the rationale for buying panels, and an inverter, such that I could feed into my home if the power went out - but not going through the mess of permitting, just planning to hook it up if the apocalypse does occur.
- hedora 4y agoAssuming you want to use solar and grid at the same time, how would you avoid using a grid tie system? You definitely need to match phase with the grid, or bad things will happen, and you definitely need it to not back-feed current into downed lines. Is there some other expensive thing the grid tie is doing, or are you proposing some other setup?
- Schroedingersat 4y agoYou could have both grid and solar feed into something less regulated with no back feed. A stupid but easy to think of example would be Solar-battery + inverter for your load with a DC grid powered charger when batteries are low.
- mwint 4y agoYou’re correct - I’m addressing why someone would buy a solar setup and not use it. You’d need a grid tie to use it, and often the permits for those are slow to get. But if the power goes out for an extended period in a real apocalypse scenario, and I’m getting cold, guess what: I’m turning on my solar and disconnecting the grid entirely.
- robocat 4y ago> Is there some other expensive thing the grid tie is doing Legal permits and network regulations are the expense I would guess. Probably nothing particularly technically difficult.