MTEP15 Chapter 2.3: Process and Schedule

MTEP15 Chapter 2.3: Process and Schedule

graphicMTEP is a myriad of moving pieces. Each piece needs to fit together to create the complete plan. At its most basic level MTEP is MISO’s annual process to study and recommend transmission expansion projects for inclusion in MTEP Appendix A. Official approval of this report and its list of transmission projects occurs, if justified, at MISO’s December 2015 Board of Directors meeting.

The process to produce the list of Appendix A projects requires 18 months of model building, stakeholder input, reliability analysis, economic analysis, resource assessments and report writing. It requires many hand-offs between various work streams and stakeholders (Figure 2.3-1). Along the way, the process includes sub-deliverables such as Planning Reserve Margins, resource forecasts and regional policy studies.

MTEP inputs and outputs

Figure 2.3-1: MTEP inputs and outputs

MTEP Planning Approach

To incorporate multiple perspectives MISO conducts reliability analysis and economic analysis from several angles, both bottom-up and top-down. It evaluates generator requests to connect to the grid via the Generator Interconnection Queue. MTEP also reports on studies that address public policy questions (Figure 2.3-2).


MTEP15 Workstreams

Completion of MTEP15 requires coordination between multiple subject-matter experts and different types of analyses (Figure 2.3-3). It integrates reliability, transmission access, market efficiency, public policy and other value drivers across all planning horizons.

At the core is model building (Chapter 2.5). The models are updated by stakeholders and serve as the basis for the various types of analyses. The MTEP futures (what-if scenarios) feed both the capacity expansion analysis (Chapter 5.2), Resource Adequacy studies (Chapter 6.1 and 6.2) and policy studies (Book 3). The MTEP process culminates in recommendations for various types of transmission expansion.

Figure 2.3-3: MTEP15 baseline timeline

Figure 2.3-3: MTEP15 baseline timeline

Stakeholder Involvement in MTEP15

Stakeholders provide model updates; project submissions; input on appropriate assumptions; and review the results and report. This feedback occurs through a series of stakeholder forums. Each of the five subregions hold Subregional Planning Meetings (SPM) at least three times annually (per FERC Order 890 requirements) to review projects specific to its region. MISO staff and stakeholders review system needs for each project. Some projects may also use stakeholder Technical Study Task Forces (TSTF) to discuss analytical results in greater detail or when these results are Critical Energy Infrastructure Information (CEII). See Chapter 4.1 for more information about FERC Order 890 requirements and milestones. The SPMs report up to the Planning Subcommittee (PSC). The Planning Advisory Committee (PAC) reviews the full MTEP report in detail, and provides formal feedback to the System Planning Committee (SPC), which is made up of members of the MISO Board of Directors. The SPC makes its recommendations to the full Board, which has final approval authority (Figure 2.3-4).

Figure 2.3-4: MTEP stakeholder forums

Figure 2.3-4: MTEP stakeholder forums

MTEP15 Schedule

Each MTEP cycle spans 18 months. MTEP15 began June 2, 2014, and ends December 10, 2015, with Board approval consideration (Figure 2.3-5).

Milestone Date
Stakeholders submit proposed MTEP15 projects September 16, 2014
First round of Subregional Planning Meetings (SPM) December 11, 2014
Stakeholders submit GADS data January 30, 2015
Second round of Subregional Planning Meetings (SPM) May 19, 2015
PROMOD models complete June 6, 2015
Powerbase modeling complete June 30, 2015
Dynamics models complete July 13, 2015
MTEP15 Report first draft posted August 10, 2015
Third round of SPM meetings (7/27 - 8/17) August 17, 2015
Planning Advisory Committee final review and motion October 14, 2015
MISO System Planning Committee October 20, 2015
MISO Board - System Planning Committee review November 19, 2015
MISO Board of Directors meeting to consider MTEP15 approval December 10, 2015

A Guide to MTEP Report Outputs

MTEP15 is organized into four books and a series of detailed appendices.

  • Book 1 summarizes this cycle’s projects and the analyses behind them
  • Book 2 describes annual and targeted analyses for Resource Adequacy – including Planning Reserve Margin (PRM) requirement analysis and Long Term Resource Assessments.
  • Book 3 presents policy studies. It summarizes regional studies like the Independent Load Forecasting, and cross-border studies.
  • Book 4 presents additional regional energy information to paint a more complete picture of the regional energy system.
  • Appendices A through F provide the detailed project information, as well as detailed assumptions, results, and stakeholder feedback.