# U.S. nuclear outage rate | PIER20 benchmarks

How much U.S. nuclear capacity is currently offline?

U.S. nuclear outage rate tracks EIA nuclear outage percentage with five-year seasonal average. It uses daily data.

The latest data is from **11 Aug 2026**. The Nuclear outage rate reading is **2.94%**. The Five-year seasonal average reading is **1.85%**. The Nuclear outage rate line is down 0.0 pp over the past year. It is below its long-run median of 7.73%.

## Summary statistics (full history)

| Series | First | Latest | Min | Max |
|---|---|---|---|---|
| Nuclear outage rate | 2.45 | 2.94 | 0.38 | 31.33 |
| Five-year seasonal average |  | 1.85 | 1.85 | 24.01 |

## Last 24 readings

| Date | Nuclear outage rate | Five-year seasonal average |
|---|---|---|
| Jul 2026 | 1.46 | 2.15 |
| Jul 2026 | 1.45 | 2.32 |
| Jul 2026 | 1.45 | 2.32 |
| Jul 2026 | 1.44 | 2.32 |
| Jul 2026 | 1.41 | 2.32 |
| Jul 2026 | 1.38 | 2.32 |
| Jul 2026 | 1.24 | 2.32 |
| Jul 2026 | 1.07 | 2.32 |
| Jul 2026 | 1.01 | 2.23 |
| Jul 2026 | 1.02 | 2.23 |
| Jul 2026 | 1.08 | 2.23 |
| Jul 2026 | 1.11 | 2.23 |
| Jul 2026 | 1.15 | 2.23 |
| Aug 2026 | 1.31 | 2.23 |
| Aug 2026 | 1.49 | 2.23 |
| Aug 2026 | 1.65 | 1.98 |
| Aug 2026 | 1.94 | 1.98 |
| Aug 2026 | 2.20 | 1.98 |
| Aug 2026 | 2.50 | 1.98 |
| Aug 2026 | 2.74 | 1.98 |
| Aug 2026 | 2.89 | 1.98 |
| Aug 2026 | 2.91 | 1.98 |
| Aug 2026 | 3.01 | 1.85 |
| Aug 2026 | 2.94 | 1.85 |

## How to read this benchmark

**How to read it.** The outage rate weights each reactor by capacity. The seasonal line uses the same dates from five previous complete years.

## How this benchmark is used

**Why traders watch it.** Power traders use this benchmark to compare nuclear outages with their seasonal pattern.

## Frequently asked questions

**What is the latest reading for U.S. nuclear outage rate?**

The latest data is from 11 Aug 2026. The Nuclear outage rate reading is 2.94%. The Five-year seasonal average reading is 1.85%. The Nuclear outage rate line is down 0.0 pp over the past year. It is below its long-run median of 7.73%.

**How often does this benchmark update?**

The source publishes daily data. PIER20 updates the page after each new observation. The chart shows the data date and fetch date.

**What data sources does this chart use?**

The U.S. Energy Information Administration (EIA) publishes the data. The methodology section lists each source series.

**Where does the data come from?**

The U.S. Energy Information Administration (EIA) publishes the source data. The source table lists each series and its exact link.

## Methodology

- Formula: EIA nuclear outage percentage with five-year seasonal average
- Frequency: Daily
- Sources: Nuclear outage rate (nuclear-outage-rate) https://www.eia.gov/nuclear/data.html; Five-year seasonal average (nuclear-seasonal-average) https://www.eia.gov/nuclear/data.html. Data via the U.S. Energy Information Administration (EIA).
- Data through: 11 Aug 2026
- Last refreshed: 11 Aug 2026

Full interactive chart: https://pier20.com/benchmarks/us-nuclear-outage-rate
Disclaimer: research software output, not investment advice.