Every gift helps advance the work needed to make clean energy the default choice worldwide. In fact, states exposed to extreme weather https://dallasrentapart.com/a-new-unmanned-aerial-vehicle-was-created.html and heavy forests have longer customer outages on average. When we pull in data from the amount of deployed renewable resources in each state over the years, and connect it with this measured reliability data, we don’t see evidence that renewable resources reduce reliability. From 2014 to 2024, 57% of respondents separated outages that were due to loss of supply, and in the past five years, those outages represented less than 10% of the duration of outages the average customer experienced.

Electric reliability is a key advantage of public power. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Every figure on PlainUtility is rebuilt from those federal tables; no number is typed in by an editor.

Grid Reliability and Security which directs the DOE to establish a uniform methodology for identifying at risk regions and guide federal reliability interventions, including emergency action under Section 202(c) of the Federal Power Act. The same focus that has been placed on potential outages of the future needs to be placed on the experienced outages of today to ensure customers aren’t overpaying for grid investments that don’t meet their needs. This reduces planners’ ability to ensure that future investments are actually addressing the most critical system needs. Utilities that do report this show that loss of supply was a minor contributor to customer outages over the past decade. This metric tracks how many times the average customer lost power over the course of each year.

• Every gift helps advance the work needed to make clean energy the default choice worldwide.
• When we pull in data from the amount of deployed renewable resources in each state over the years, and connect it with this measured reliability data, we don’t see evidence that renewable resources reduce reliability.
• The EIA 861S is essentially a shorter version of Form EIA-861 and does not include reliability data.
• You’ll get new reports, event invitations, and practical insights to help us all accelerate the clean energy transition.
• Lesson plans, science fair experiments, field trips, teacher guide, and career corner.

Download our Grid Operator’s Guide to DERMS

Every reliability number we publish comes from EIA Form 861 annual filings, the same data utilities file with state public utility commissions. For decision support, the pre-move reliability guide and insurance interaction guide walk through how outage history affects relocation and homeowner-policy decisions. Type rows are unweighted utility means among filers with SAIDI and SAIFI; customer counts sum the filing’s customer field.

Special Reports

• Service interruptions can affect public safety, disrupt commerce, increase operating costs, and reduce productivity.
• See our rural vs. urban analysis for infrastructure details.
• Top-performing municipal utilities like those in Nashville and Jacksonville achieve SAIDI under 50 minutes, while the bottom quartile exceeds 300 minutes, a 6x difference.
• However, variation from state-to-state and utility-to-utility can be significant, so be sure to check out our full dashboard to explore reliability in your state or utility.

A utility with SAIDI of 90 minutes could mean 1 outage of 90 minutes (rare but severe), or 6 outages of 15 minutes each (frequent but brief). SAIDI (average minutes of outage per customer per year) is the headline reliability metric, but it averages duration. But Utility B’s customers experience 3× more outage events, more resets, more work-from-home interruptions, more freezer risk. Understanding whether your https://www.faststartfinance.org/2022/01/ utility is in the top or bottom quartile matters for decisions about backup generators and home insurance riders. Top-performing municipal utilities like those in Nashville and Jacksonville achieve SAIDI under 50 minutes, while the bottom quartile exceeds 300 minutes, a 6x difference.