Yesterday, the Midcontinent Independent System Operator (MISO) printed the Renewable Integration Impact Assessment (RIIA), an evaluation that evaluates growing quantities of wind and photo voltaic sources throughout the MISO grid and the broader bulk electrical system. RIIA represents the end result of greater than 4 years of study in addition to important enter from stakeholders.

RIIA will inform MISO’s Response to the Reliability Imperative, the broad vary of efforts MISO is pursuing to make sure system reliability whereas we transition to scrub power.

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MISO developed the RIIA as an informational examine to establish complexity inflection factors related to growing ranges of renewable integration. The evaluation discovered that considerably larger ranges of renewables penetration will be achieved, however it can require planning and appreciable regional cooperation to cost-effectively accomplish.  

Here’s an excerpt from the Executive Summary of the report:

While grid operators have managed uncertainty for many years, MISO is getting ready for an unprecedented tempo of change. MISO, members, regulators, and different entities chargeable for system reliability all have an obligation to work collectively to deal with these challenges. MISO calls this shared duty the Reliability Imperative, which is damaged into 4 classes Market Redefinition, Long Range Transmission Planning (LRTP), Operations of the Future, and Market System Enhancements. RIIA is a key a part of understanding the dangers forward.

“MISO, our members and the whole trade are poised on the precipice of nice change as we’re being requested to quickly combine much more renewable sources,” mentioned MISO’s President and Chief Operating Officer Clair Moeller in a press launch concerning the RIIA. “Given our regional Reliability Imperative, MISO should act shortly, intentionally and collaboratively to make sure that the planning, markets, operations and programs hold tempo with the modifications. We can obtain nice change collectively.”

RIIA identifies potential future system weak factors that will should be addressed as renewables enhance. These outcomes are supposed to help stakeholders as they weigh plans and insurance policies that can additional change the long run grid’s useful resource combine.

More from the Executive Summary:

Beyond 30%, transformative pondering and coordinated motion between MISO and its members are required to arrange for the numerous challenges that come up (Figure 1, under). It is necessary to notice that renewable development doesn’t occur uniformly throughout the MISO footprint, or the broader interconnected system. Growth happens quickest in areas with prime quality wind and photo voltaic sources, out there transmission capability, and favorable regulatory environments. For instance, when MISO reaches 30% renewable power penetration, some Local Resource Zones are prone to be approaching 100% renewable power penetration. Locations which expertise the quickest renewable development expertise challenges first, however past 30% renewable penetration the system as an entire dealing with new and shifting dangers somewhat than merely native points.

MISO is planning to host a remaining RIIA workshop on Wednesday, March three, 2021 from 2 – four pm ET to offer an summary of the report and focus on its conclusions.

“We imagine it can take transformational change, together with redefined markets and planning processes, to allow environment friendly and dependable operations sooner or later,” mentioned MISO’s EVP Market & Grid Strategies Richard Doying.  

“Coordinated motion amongst all stakeholders will probably be essential to facilitate individuals’ decarbonization objectives and plans for larger ranges of renewable era.”

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