Riding through MISO changes: What utilities need to know — and do — this summer
MISO’s demand response rules are evolving, with new requirements taking effect in summer 2026 and additional changes expected over the next several years.
For utilities managing residential Load Modifying Resources (LMRs), these updates raise expectations around testing, performance, and availability — and increase the financial impact of underperformance.
What’s changing in MISO (and why the stakes are higher)
MISO’s recent and proposed rule changes reflect a broader shift toward tighter performance accountability for LMRs. Together, these changes require utilities to be more deliberate about how demand response is planned, tested, and operated in real time.
Changes we know are coming (FERC‑Approved)
Several updates are already finalized and taking effect starting this summer:
- Annual real power testing is now required for LMRs
- Testing timelines are tied to the calendar year prior to registration
- Registered capacity is limited to tested performance, with defined exceptions
As a result, pre‑season testing is no longer just a compliance exercise; it directly determines how much capacity a utility can confidently register and rely on. Utilities that delay or minimize testing risk limiting registered capacity and reducing flexibility in future program years.
Now is the time to align testing plans with how you want to register and operate resources in 2027. Your EnergyHub CSM can help translate MISO’s new testing requirements into a strategy that supports both compliance and flexibility.
Changes likely taking effect this summer
Additional changes expected this summer increase both complexity and risk:
- Higher penalty exposure, particularly for partial and complete failures
- A new ‘worst‑hour’ or fourth‑hour penalty methodology that places greater weight on sustained performance late in an event — when weather-sensitive portfolios are most likely to taper or rebound
- Tighter performance tolerance bands, narrowing the margin for error
- More stringent availability definitions, making accurate DSRI reporting essential
Under these rules, late‑event performance and disciplined availability reporting play a much larger role in overall portfolio outcomes. Nomination and operational decisions now carry greater downstream consequences.
Changes that may reshape DR by 2028
Looking ahead, MISO’s pending accreditation reforms could fundamentally reshape how residential LMRs participate in the market:
- More frequent dispatch tied to MaxGen warnings, not just EEA2 events
- Accreditation tied to reported availability during “capacity at risk” or resource adequacy hours
- Expanded requirements around performance data, testing, and availability
While these changes are still pending, the direction is clear. Utilities that start building robust performance and availability data now will be better positioned to adapt when these reforms take effect.
Best practices for navigating MISO changes
As MISO’s rules evolve, utilities are being asked to deliver more predictable performance with less margin for error. The best practices below are designed to help utilities navigate these changes in a practical, operations‑ready way — managing risk, protecting portfolio value, and maintaining flexibility as expectations around testing, performance, and availability continue to tighten.
Each approach reflects real‑world utility experience and what’s working today as programs adapt to a market with tighter performance and availability expectations.
| MISO change or pressure | 2026 best‑practice focus | Why it matters for 2027 and beyond |
| Annual real power testing | Plan intentional, multi‑event test campaigns | Creates defensible performance data for registration |
| Capacity limited to tested performance | Treat testing as a portfolio strategy | Avoids locking in overly conservative capacity |
| Fourth‑hour / worst‑hour penalties | Test full four‑hour, sustained performance | Builds confidence in late‑event delivery |
| Higher penalty exposure | Pilot DLS and smoother load shapes | Reduces late‑event degradation and penalty risk |
| Weather‑sensitive performance | Stack resources during test events | Demonstrates more resilient aggregated performance |
| Stricter availability rules | Use forecasting to inform testing and availability | Aligns expected and reported performance |
| Increased nomination risk | Use test results to guide nominations | Improves operational confidence and discipline |
| Single‑stream value concentration | Test background and locational strategies | Diversifies value and reduces dependency on events |
| Pending accreditation reforms | Build repeatable performance datasets now | Eases future accreditation transitions |
| Greater reliance on performance data | Align M&V with testing strategy | Ensures today’s data remains usable tomorrow |
Build and execute a robust testing plan
The MISO changes this addresses
- Annual real power testing requirements
- Capacity registration limited to tested performance
- Testing timelines tied to the prior calendar year
What utilities are doing
Many utilities are moving beyond single, check‑the‑box tests. Instead, they are:
- Running multiple test events across different hours (often spanning 12–10 p.m.)
- Using longer, four‑hour events to validate sustained performance
- Treating testing as a portfolio‑level strategy rather than an isolated obligation
This approach supports compliance while building confidence in how portfolios perform during real system stress, helping utilities take a data-driven approach to right-size their nominations and manage their risk exposure.
How EnergyHub helps
EnergyHub works with clients to design testing plans that balance rigor and flexibility — supporting multiple event types and durations within a single portfolio. We also work with utilities to use 2026 testing strategically — supporting stronger registration and more flexibility in the 2027 program year and beyond.
Pilot dynamic load shaping (DLS) to improve fourth‑hour performance
The MISO changes this addresses
- Worst‑hour / fourth‑hour penalty methodology
- Increased exposure from partial failures late in events
What utilities are doing
To address endurance risk, utilities are piloting smoother load shed strategies designed to reduce rebound and improve 4th hour late‑event performance. Many utilities are comparing traditional DR events with more gradual curtailment approaches to better understand performance, customer impact, and late‑event endurance. Utilities with multiple DERs can also test stacking of DER resources across the four hour event to evaluate how multiple DER’s can contribute to an aggregation of performance.
How EnergyHub helps
EnergyHub enables DLS pilots alongside standard events, helping utilities evaluate performance outcomes and determine where smoother load shapes can meaningfully reduce penalty exposure.
Use capacity forecasting to inform availability decisions
The MISO changes this addresses
- Stricter availability definitions
- Penalties tied to failure to acknowledge or respond to dispatch
- Increased scrutiny of DSRI availability reporting
What utilities are doing
Utilities are increasingly using capacity forecasting as one operational input — rather than a single source of truth — to inform availability decisions. This includes incorporating weather and device‑level insights to better align expected performance with reported availability.
How EnergyHub helps
EnergyHub’s capacity forecasting capabilities support same‑day and next‑day planning, helping teams make more informed availability decisions while applying operational judgment where it matters most.
Identify additional pathways to maximize portfolio value
The MISO changes this addresses
- Higher performance risk concentrated in a single value stream
- Growing importance of flexibility and locational performance
What utilities are doing
Utilities are looking beyond traditional DR events to diversify how their portfolios deliver value, including:
- Background VPP strategies that help offset capacity lost through conservative fourth‑hour nominations and support peak shaving during MISO seasonal 1CP hours
- Locational dispatch approaches that expand the value stack and help ensure program cost‑effectiveness by delivering flexibility where it’s most needed
How EnergyHub helps
EnergyHub supports multiple value streams on a single platform, helping utilities think strategically about how, when, and where their flexible resources can deliver the most value.
Re‑evaluate M&V methodology with future accreditation in mind
The MISO changes this addresses
- Pending accreditation reforms
- Greater reliance on availability and performance data
- Increased dispatch frequency over time
What utilities are doing
Rather than waiting for new requirements to take effect, utilities are proactively reviewing whether their current M&V approaches still align with where MISO is headed. Many are coordinating early with EM&V partners to avoid last‑minute changes driven by compliance deadlines.
How EnergyHub helps
EnergyHub works collaboratively with utilities and third‑party EM&V providers, using real performance data to inform M&V strategies that are resilient to future market changes.
Preparing now protects value later
MISO’s evolving rules make one thing clear: preparation is a strategic advantage. Utilities that invest early in testing, performance data, and operational alignment are better positioned to navigate tighter requirements — without sacrificing portfolio value or flexibility. By acting now, utilities can reduce risk, support more confident operational decisions, and set their DR portfolios up for long‑term success as market expectations continue to evolve.
EnergyHub’s role is to work alongside utilities: helping translate evolving market rules into practical strategies that support reliable operations and shared success. We look forward to continuing the conversation after the summer to reflect on lessons learned and performance outcomes.
Utilities that use 2026 testing to build durable, multi‑resource performance data will be better positioned for 2027 registration and future accreditation changes. Your EnergyHub team is ready to help you design a testing strategy that delivers confidence — not just compliance.
Disclaimer: This blog post is for informational purposes only and does not constitute legal, regulatory, or financial advice. EnergyHub’s interpretations of MISO regulations are based on our current understanding of market rules, which are subject to change. You should consult with your own legal counsel or regulatory teams before making any operational changes or market commitments.