Today’s LiveWire Spotlight addresses FERC Order 851 approving TPL-007-2, which has been extensively re-written to better address the threat of geomagnetic disturbances (GMD) to BES equipment and stability. In the Order, the Commission concurrently approves NERC’s finalized work plan to examine all the parameters in the GMD equations to a high degree of detail.

TPL-007-2 will begin to take effect on July 1, 2019 in the U.S. – a phased compliance schedule for the supplemental GMD Vulnerability Assessment is pending. The additional updates directed by Order 851 to the CAP requirements are due back to FERC a year later.