In a transmission planning status update, the Midwest ISO (MISO) said it has completed tariff language for regional planning and cost allocation in order to be in compliance with FERC Order 1000.
MISO is still working on developing a “more detailed” proposal on interregional planning and cost allocation and is modifying its right of first refusal (ROFR) proposals, based on stakeholder input, the RTO said in the update. MISO held a stakeholder meetings on these topics on June 1 for the ROFR proposal, and will hold one on July 9 for interregional planning and cost allocation.
Among other projects MISO is working on is a series of studies evaluating what the impact of EPA regulations, particularly the Cross-State Air Pollution Rule (CSAPR) and Mercury and Air Toxics Standards (MATS), will be on the region. MISO is conducting CSAPR emission tracking and projections, seasonal maintenance margin calculations, supply chain analysis, natural gas infrastructure evaluation, and EPA-related outage coordination management, the RTO said.
“Taken together, these analyses will help identify potential outage coordination issues in the MISO region, and suggest potential tariff changes, if necessary,” MISO said.
The RTO has completed the supply chain study and the analysis of EPA regulatory impacts on the Eastern Interconnection. The region is currently developing methodologies for tracking emission outputs from the generation fleet, is finalizing its gas and electric infrastructure interdependency analysis Phase 2 draft results, and is evaluating potential market-related issues and potential tariff changes.
MISO is also conducting the Northern Area Study to evaluate the reliability and economics of proposed transmission and generation alternatives across MISO’s northern footprint. The study was prompted by stakeholder transmission proposals to address existing reliability issues in this area, potential EPA-prompted generation impacts, and the need to understand economic benefits in a comprehensive fashion, MISO said.
The first stakeholder meeting is on June 7. For the study, MISO is developing economic and reliability models.
Another study MISO is undertaking is the Market Efficiency Planning study, an outgrowth of the top congested flow study. The market efficiency study “seeks to identify and evaluate market efficiency projects/portfolios within the MISO footprint and on the seams,” the RTO said, adding that the process involves local flowgate specific congestion mitigation, or bottom-up, solutions and larger-scale projects and portfolio, or top-down solutions, on a regional basis “to ensure more efficient and cost effective projects/portfolios.”
Another study, the Manitoba Hydro study, evaluates the potential of using the hydro system to provide additional operational reserve capabilities, determine the potential of using the system as a large-scale storage device, and to “investigate the possibility of eventually including enabling transmission as a multi-value project in Appendix A” of MISO’s transmission expansion plan (MTEP), MISO said.
Finally, MISO said its 2012 summer assessment found sufficient reserves to meet peak demand this summer. Demand in the region is expected to peak at 89,867 MW, while the region has available capacity of 114,475 MW for the season, comprising a forecasted regional reserve margin of 27.4%, exceeds its reserve requirement of 16.7%.
MISO’s 2011 actual reserve margin was 26.6%, with a 23.8% forecast.