PJM Interconnection on Dec. 8 said that its board has approved changes of nearly $260m to the Regional Transmission Expansion Plan (RTEP) to incorporate baseline and network upgrade changes.
The approved facility upgrades were presented to the Transmission Expansion Advisory Committee in November, PJM said, adding that all of the approved projects will be incorporated into the RTEP.
PJM said that the board authorized $259.34m for:
- Construction of new baseline reliability upgrades totaling $158.11m and associated cost allocations for the upgrades
- Changes to previously approved RTEP baseline upgrades for a net increase of $47.26m
- Addition of facilities, network upgrades and withdrawal of cancelled facilities related to the interconnection queue for a net increase of $53.97m
Among the projects that were approved were the:
- Reconductoring of the entire Dequine-Meadow Lake 345-kV circuit #2 in the AEP Transmission Zone, at an estimated cost of $6.6m; the required in-service date is June 1, 2021
- Reconductoring of the entire Dequine-Eugene 345-kV circuit #1 in the AEP Transmission Zone, at an estimated cost of about $22.2m; the required in-service date is June 1, 2021
- Addition of a second 345/138-kV transformer at the Chamberlin substation in the ATSI Transmission Zone, at an estimated cost of $3.8m; the required in-service date is June 1, 2021
With the newest changes, PJM said that it has authorized more than $29bn in transmission additions and upgrades since the first RTEP began in 2000.
PJM also said that its board has approved the 2016 Installed Reserve Margin (IRM) Study results of 16.6% for 2017-18.
The board approved the IRM and associated parameters for each of the next four delivery years based on results from PJM’s annual IRM Study, PJM added, noting that those parameters are key inputs to the reliability pricing model auctions; the IRM study also satisfies the requirements of the resource adequacy standard for the ReliabilityFirst Corporation.
The study results re-set IRM for the delivery years of 2017/2018, 2018/2019, 2019/2020, and establish the initial IRM for 2020/2021, PJM said, adding that the study examines the 11-year planning horizon, from June 1, 2016, through May 31, 2027.
Based on results, PJM said that it recommended a 16.6% IRM for the 2017/2018, 2019/2020, and 2020/2021 delivery years, and a 16.7% IRM for the 2018/2019 delivery year.