Reliable Off-Grid Packages

[winnie]

Actually I was think in terms of reducing the cost of a customer owned installation.

Service point at the 'road', then customer owned feeder crossing the property.

If the customer owned feeder is designed to carry 2A at 650V DC on a continuous basis rather than 100A at 240V very infrequently, then that feeder conductor could be very small indeed.

-Jon

 

[gadfly56]

Actually I was think in terms of reducing the cost of a customer owned installation.

Service point at the 'road', then customer owned feeder crossing the property.

If the customer owned feeder is designed to carry 2A at 650V DC on a continuous basis rather than 100A at 240V very infrequently, then that feeder conductor could be very small indeed.

-Jon

Well, 2 amps at 650VDC sounds pretty puny for a commercial or industrial installation regardless of how much battery storage you have, and around here, the POCO owns everything to the weatherhead, so no advantage to a residential customer.

 

[pv_n00b]

I think winnie's point was using batteries to smooth the demand as far as the POCO is concerned, not in conjunction with PV.

Sure, take away the PV. The utility service has to be able to supply the load if the BESS fails, so there is no option to undersize any of it. It's an interesting idea, just not feasible in the real world.

 

[gadfly56]

Sure, take away the PV. The utility service has to be able to supply the load if the BESS fails, so there is no option to undersize any of it. It's an interesting idea, just not feasible in the real world.

It's an interesting though experiment about forcing load management onto the customer, rather than the POCO having to cover load changes over the day, if you're willing to tell customers that they are SOL if the batteries fail.

 

[retirede]

Sure, take away the PV. The utility service has to be able to supply the load if the BESS fails, so there is no option to undersize any of it. It's an interesting idea, just not feasible in the real world.

In his example, the only load that can possibly be served by the utility is a 1.5 KW DC power supply. Nothing else is capable of being powered from the utility.