FERC Order 1000 (2011)
FERC required regions to plan transmission together and to allocate the cost of new lines to those who benefit. States and utilities objected that the agency was dictating how local grids get built and paid for.
Dozens of parties challenged the rule in court.
A federal appeals court upheld it in 2014, cementing FERC's role in regional cost allocation.
The current fight is again about who pays for grid upgrades. Order 1000 shows FERC can win cost-allocation battles, but only after years of litigation.
