There are a couple points to consider and a couple that refute some of your concerns.
First, you don’t need a full off grid battery setup to benefit. With time of use rates a battery that covers peak usage and even recharges under low time of use rates is a big benefit over its lifetime.
On safety, to sell back to the grid you need an interconnect agreement and inspection of your system. California utilities can install meters that can apparently detect secondary sources of back feeding the grid. Lastly if you try to DIY a correct setup you’ll have to buy UL1741 spec equipment for managing back feeding and equipment with other safety standards relevant to your use. Often this is not a code requirement but in the interconnect agreement and utilities have enforcement powers.
For off grid solar it’s a different story but the NEC always applies. If someone wants to do a comically bad job at their electric work they’re probably going to burn down their house anyway.
In my current home I’ve recently finished removing and replacing all the electric work accomplished by a previous owner’s “contractors.” Nothing like having electrical work run through low voltage grade audio visual wall plates and connectors for zero fire protection IN AN AIR PLENUM THAT GOES FROM MY BASEMENT TO MY SECOND FLOOR. That way if something does catch on fire it didn’t have all those pesky layers of protection between the floors of the house. Literally $30 in parts later and shorting wires get two hours to melt and trip a breaker.
First, you don’t need a full off grid battery setup to benefit. With time of use rates a battery that covers peak usage and even recharges under low time of use rates is a big benefit over its lifetime.
On safety, to sell back to the grid you need an interconnect agreement and inspection of your system. California utilities can install meters that can apparently detect secondary sources of back feeding the grid. Lastly if you try to DIY a correct setup you’ll have to buy UL1741 spec equipment for managing back feeding and equipment with other safety standards relevant to your use. Often this is not a code requirement but in the interconnect agreement and utilities have enforcement powers.
For off grid solar it’s a different story but the NEC always applies. If someone wants to do a comically bad job at their electric work they’re probably going to burn down their house anyway.
In my current home I’ve recently finished removing and replacing all the electric work accomplished by a previous owner’s “contractors.” Nothing like having electrical work run through low voltage grade audio visual wall plates and connectors for zero fire protection IN AN AIR PLENUM THAT GOES FROM MY BASEMENT TO MY SECOND FLOOR. That way if something does catch on fire it didn’t have all those pesky layers of protection between the floors of the house. Literally $30 in parts later and shorting wires get two hours to melt and trip a breaker.