The first amended agreements are trickling in following FERC's 2018 decision to reinstate transmission owners’ rights to self-fund network upgrades.

FERC acted on tariff filings by more than a dozen transmission owners to correct how they calculate accumulated deferred income tax balances.

FERC identified 13 additional transmission owners it said should change accounting practices that could inflate rates by underestimating tax credits.

The number of state officials and utilities announcing actions because of the Tax Cut and Jobs Act signed by President Trump last month keeps growing.