Is it legal to have a cutover so that it's possible to use one's own renewable energy when the power's out, given an exclusive Buy-All Sell-All agreement?
- 1a) when the grid is down
- 1b) when the grid wants the customer to slowly increase load e.g. after the power has been out
- 1c) when it's safe to send more electricity to the grid e.g. at retail or wholesale or intraday rates
- 2a) how full are the local batteries
- 2b) the current and projected local load && how much of that can be throttled down
- 2ba) how full and heated the hot water tank(s) are
- 2bb) the current and projected external and internal air temperature and humidity
- 2bba) the current and projected internal air temperature and humidity, per e.g. bath fans and attic fans with or without in-wall-controllers with humidistats
- 2bc) projected electrical needs for cooking, baking, microwaving (typically at 100W*15amps=1500W or more)
- 2c) how many volts at how many amps the local renewables are producing
But IIUC, Buy-All Sell-All service provision agreements threaten termination of service if the customer/competitor does anything but sell all locally produced electricity to the grid by direct connection, so an emergency cut-over that charges your batteries off your solar panels instead of the grid (e.g. when the grid is down) is forbidden.