SAIDI
260 min per year
Yearly outage minutes, on average (2023)
Lower Yellowstone R E A, Inc is a member-owned electric cooperative operating in Montana under EIA identifier 11272. It reports service to approximately 5,171 customer accounts and generated about $0.03 billion in annual electric revenue, with a service footprint spanning 18 ZIP codes. Cooperative ownership means the utility is run for the benefit of the ratepayer-members who elect its board, rather than for shareholder returns, which can shift how rate and investment decisions get made.
In 2023, the average Lower Yellowstone R E A, Inc customer experienced 260.2 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. The SAIFI figure, which tracks average outage events per customer, came in at 1.36 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 192.7 minutes, the gap between that figure and the headline 260.2 reveals how much weather, not day-to-day infrastructure, drove outages.
With 4 consecutive years of EIA data (2020–2023), Lower Yellowstone R E A, Inc's reliability record can be judged on trend rather than one isolated year. SAIDI climbed from 254.6 to 260.2 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.
SAIDI
260 min per year
Yearly outage minutes, on average (2023)
SAIFI
1.36 interruptions/yr
Events per customer (2023)
Customers
5,171
Customers across Montana
260 minutes per customer per year
Power-out minutes per year (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 254.6 | 201.4 | 1.400 | - |
| 2021 | 2989.6 | 34.1 | 1.618 | - |
| 2022 | 541.6 | 214.2 | 0.394 | - |
| 2023 | 260.2 | 192.7 | 1.360 | - |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Lower Yellowstone R E A, Inc serves 18 ZIP codes in Montana.
Lower Yellowstone R E A, Inc had a SAIDI of 260.2 minutes in 2023. Excluding major weather events, this is near the national average.
Lower Yellowstone R E A, Inc is classified as a Cooperative serving Montana.
Lower Yellowstone R E A, Inc serves approximately 5,171 customers in Montana.
Lower Yellowstone R E A, Inc has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer.
Every figure on PlainUtility is rendered directly from the U.S. Energy Information Administration's Form 861 reliability data, no number is typed in by an editor. This utility's SAIDI/SAIFI figures are rendered directly from EIA Form 861 reliability files. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2020-2023.