Error
  • JLIB_APPLICATION_ERROR_COMPONENT_NOT_LOADING
  • JLIB_APPLICATION_ERROR_COMPONENT_NOT_LOADING

AEI ISO Alerts 2026 Service Notice

Carlisle, MA -- June 02, 2026 -- AEI will be resuming its free ISO Alert service to help subscribers avoid coincident peaks with the electric power grid during the coming months of warm weather and heavy demand. The service will resume on Monday, June 15th, 2026 and continue through the last Friday in September.

New Methodologies for NY, PJM, and ERCOT

For 2026 we are introducing new methods for determining the basis for our reports and alerts. These new methods are intended to be more closely aligned with the way certain ISOs will ultimately call the peak hour at the end of the year. Specifically:

  • For NYISO, we will be using only the July and August peak hours as the benchmark load during the summer. This method avoids the issue we saw in 2025 where the peak on June 24th set the bar too high and too early given what ultimately happened in July and August.
  • For PJM, we will be using the "5CP" method where the Top 5 Hours in June through September are averaged to calculate the annual peak hour. In our reporting, we will reference the 5th highest hour as the benchmark since any value above that number will cause average of the top 5 hours to move higher. Be aware that this method will likely have many false positives in June due to the weight of an early month in the season. For all intents and purposes, this is equivalent to the default method we have always used except that we are recognizing the 5th top hour as the benchmark rather than the single top reigning annual peak (RAP) hour.
  • For ERCOT, we will take the single peak hour for each of the four months June, July, August, and September to build a composite (average) hour from those four hours. For months in the future we will use the corresponding months of 2025 as a proxy for the individual monthly peaks.

For all the other ISOs, nothing will change in the calculations. Peaks in 2026 are judged solely from ISO data collected since June 1st 2026. As usual, that means that peaks are occuring on nearly a daily basis as the season warms up.

New Support for G-3 Customers who Opt for Transmission Coincident Peak Billing

The Optional Transmission Coincident Peak Billing provision under the G-3 tariff uses a peak hour in each calendar month of the year to determine the billing demand. If you have opted for this billing, your charge is calculated using your specific, building-level peak demand recorded during the precise hour that the overall ISO New England regional network hits its peak for that month. If you elect this option, you avoid the standard 12-month ratchet (which sticks you with your own historic highest 15-minute facility peak). Instead, your charge resets monthly based strictly on how much load you shed during the single, regional ISO-NE peak hour of that specific month.

AEI is now ready to support you with a Morning Report and SMS alerts for all 12 months of the year. Contact us for pricing. We can also advise you if this tariff feature makes sense for your energy profile.

Capacity Charges 2026

Capacity Charges 2026 PJM remains the most significant demand-charge market for large customers with a 2026/2027 FERC-approved cap of $329.17/MW-day, up from $269.92/MW-day for 2025/2026. Conversely, ISO New England clocks in at approximately $2.59/kW-month, one of the lowest clearing prices in the market's history. In between the two sits NYISO with a NYC rate of about $132/kW-year and Rest of State at $51/kW-year.

Feeling lazy, we asked ChatGPT to summarize the charges across all seven ISOs and it chose to show them in order of value which seemed like a good way to compare them:

Ranking by Value of Avoiding 1 kW at System Peak

  1. NYC (NYISO) ≈ $130/kW-year
  2. PJM ≈ $120/kW-year
  3. NYISO Rest of State ≈ $50/kW-year
  4. MISO ≈ $45/kW-year
  5. ISO New England ≈ $31/kW-year
  6. SPP ≈ $0-20/kW-year
  7. ERCOT ≈ $0/kW-year

So, whether you're into energy efficiency or just a long-suffering Knicks fan, it looks like NYC is the place to be.

For more information, or to signup for this free service, please visit the AEI ISO Alerts website at https://www.aeintelligence.com/products-and-services/aei-iso-alerts.

###

New AEI Energy Maps Just Released

We've just released public versions of our AEI Energy Maps for Los Angeles, San Francisco, New Orleans and others built in partnership with the U.S. DOE Better Communities Alliance.

Visit the AEI Energy Maps page

AEI Featured on Energy Matters 2U Podcast

AEI was recently featured along with Leidos on an Energy Matters 2U Podcast. During the 20 minute conversation, Carl Popolo of AEI and Ron Gillooly, Leidos' Industrial Energy Program Director, discussed how a building's energy data profile combines with a physical audit to target efficiency measures that have specific and verifiable results.

Listen to the Podcast

AEI To Provide Energy Maps to U.S. DOE Better Communities Alliance

AEI is pleased to have been selected as an Affiliate to the U.S. Department of Energy Better Communities® Alliance. AEI is committed to provide its Energy Map™ solutions to selected partners from a list of 40 noteworthy cities such as Atlanta, Chicago, Denver, Houston, Los Angeles, Miami, New York and San Francisco.

Read More

AEI Selected as MHEC Supplier

June 29, 2017 -- Carlisle, MA -- AEI has been selected as a Massachusetts Higher Education Consortium (MHEC) supplier to provide Facility Maintenance and Energy Assessment Software to MHEC members through June 2020. The letter from MHEC reads: "Your bid response was evaluated and determined to be the most responsible and responsive bid that offered best value to MHEC members".

Read More

Whole-Portfolio Real-Time Main Metering

AEI brings to market a whole-portfolio real-time main meter view of cities, towns and campuses by combining our AEI Soft Start Real-Time technology with our proven Energy Map visualization platform.

For the energy manager who needs to see energy use across the entire building stock in real-time, this affordable solution shadows the utility main meter, requires no BAS integration, feeds upstream applications such as kiosks, and gives the manager real-time insight into demand response opportunities on their own terms. With 1-minute resolution, rolling profiles and SMS and E-Mail alerts, this integrated solution can also help control billing-period peak usage. It's completely incorporated into our Energy Map platform for exploring historical usage, and that means one-stop-shopping for your energy team to study utility trends, track sustainability goals, and to know your real-time position for social awareness and real-time response.

Explore the Demo

The Bigger Apple: City of New York Energy Map

Building on our work last year to deliver an Energy Map of the City of Boston, we figured we should demonstrate a little scalability and bite on something bigger. The result is our City of New York Energy Map that combines data from the PLUTO and LL84 disclosure reporting datasets and shows electricity, natural gas, oil, steam and water consumption for over 13,000 properties with a combined GSF of over 1.8 billion ft2. The data includes GHG emissions, and for most properties we're able to show trends since 2011.

Read More in News

AEI on Twitter

AEI Commissioning

Are your buildings running efficiently? Let's look at the data and prove it to the managers who pay the utility bills. Efficiency problems? Download the AEI Commissioning Services brochure to see how we can help.