A new annual resource adequacy survey released by the Midcontinent Independent System Operator and the Organization of MISO States projects the MISO region will have adequate resources for 2019, while continued action will be needed to ensure resource adequacy in the extended outlook.
MISO said that the OMS-MISO survey offers a forward-looking view that informs MISO and stakeholders of the potential future resource landscape and helps inform collaborative action by states and MISO members to ensure continued resource adequacy.
This year’s survey projects MISO will have from 0.6 gigawatts to 6.6 gigawatts of generation resources beyond the regional requirement in 2019. The reserve margin is expected to range from 17.6 percent to 22.4 percent next year.
As with previous years, the demand forecast continues to indicate slowing growth. The 2019 summer peak forecast decreased 1.5 gigawatts from the 2017 survey.
In the five-year outlook, the regional growth rate decreased from 0.5 percent last year to 0.3 percent.
On the supply side, the survey indicates that a decrease in resource commitments beyond 2019 could lead to greater resource adequacy risk.
The survey said that lower resource commitments are mainly focused in Zones 4 and 7, and noted that fewer resource commitments lead to a higher likelihood of using emergency resources. Zone 4 covers Central and Southern Illinois, while Zone 7 covers Michigan.
In most of the MISO region, load serving entities, with oversight by the applicable state or local jurisdiction, are responsible for resource adequacy.
In late April, MISO said it was projecting adequate power reserves to meet 2018 summer peak demand. The regional transmission organization expects summer demand to peak at 124.7 gigawatts, with 148.6 GW of available capacity.
The OMS is made up of representatives from each state with regulatory jurisdiction over entities participating in MISO.
The purpose of the OMS is to coordinate regulatory oversight among the states, including recommendations to MISO, the MISO Board of Directors, the Federal Energy Regulatory Commission, other relevant government entities, and state commissions as appropriate.
MISO briefed stakeholders on the survey results on June 8.
Additional details are available here.