?
Composite Operational Excellence Score (0-100) — average percentile rank across 7 dimensions in three sub-scores: Reliability (capacity factor, forced outage days, B2B avg streak), Efficiency (fuel utilization, refuel duration), and Discipline (startup duration, scram count). 5-year window. Higher = more operationally excellent. Click to see the full breakdown.
87
Excellence
#5 of 93
Top Quartile
?
Current reactor power level from the most recent NRC daily report.
100%
Power
ONLINE
?
Days of continuous operation since the last outage ended. Ranked against all operating units.
125
Current Run
days
#69 of 95
Mid Quartile
?
Longest recorded period of continuous operation between outages.
549
Record Run
days
#63 of 95
Mid Quartile
?
Breaker-to-Breaker runs — continuous operation exceeding the cycle-adjusted threshold (468 days for this 18-month cycle unit) with no trips to 0% power.
10
B2B Runs
#9 of 87
Top Quartile
?
Lifetime capacity factor: average power level across all recorded days (100% = always at full power). Ranked against all NRC-tracked units.
94.7%
Capacity Factor
#4 of 95
Top Quartile
?
Net electricity actually generated over the most recent 12 months reported by the U.S. Energy Information Administration (Form EIA-923), summed across every unit at this plant. These are authoritative actuals, not an estimate.
19.57 TWh
Net Generation
EIA-923 · 12 mo to 2026-06 · plant total
?
Community rating score (Bayesian-adjusted). Based on 36 votes. Ranked against all rated facilities.
48.1
Rating
36 votes
#72 of 97
Mid Quartile
?
Total NRC-reported scram events (emergency reactor shutdowns). Ranked fleet-wide — fewer scrams = better rank.
0
Scrams
?
Years since commercial operation began. License remaining: 21.3 years.
37.9
Operating Age
years
21.3 yrs remaining
Reactor Status Timeline
Online NRC data, Mon to Fri ? Actual daily reactor status from NRC reports (Mon to Fri) and the current state. What is coming -- the utility's published Scheduled outage and NukeWorker's model Projection -- is part of a subscription. Colored by status. How far ahead you can see depends on your plan.OnlineCoastdownPower AscensionRefueling Outage
Estimated reactivity remaining in Braidwood 2's current fuel cycle, shown as a stylized fuel rod that drains as the cycle progresses. The cycle starts when the unit returns to power after its most recent refueling outage, and the gauge represents the fraction of that cycle's typical effective full-power days (EFPD) still available. Days at less than 100% power burn fuel proportionally — so a unit with significant downtime (high burn deficit) drains slower and ends with MORE reactivity left, giving operators margin to coast down (extend the cycle by reducing power) instead of refueling on the calendar. The dashed red line near the bottom marks the rough industry coastdown threshold (~15% remaining). Cycle target is the unit's median recent cycle length. Source: NRC daily reactor status reports cross-referenced against scheduled refuel outage history.
Fuel Burn Down Cycle since May 7, 2026
Braidwood 2 is 124 days into its current fuel cycle with an estimated 76.9% of its fuel left. Its typical cycle runs about 534 days.
Fresh — 100%
Refuel — 0%
76.9% remaining
Fresh fuel
Cycle progress
124 / 534 days
EFPD remaining
411 days
Effective burn
123 EFPD
Burn deficit
0.7 FPD
Braidwood 2 is early in its fuel cycle with 411 EFPD of reactivity remaining. Refuel is not expected for many months.
Historical Burn-Down (18 completed cycles)
Avg refuel point
3.1% remaining
Avg refuel (3yr)
2.2% remaining
Deepest burn
0.0% (2015-10 → 2017-04)
Most margin
7.1% (2000-11 → 2002-04)
Last 5 cycles at refuel
0%
2018-11
2%
2020-05
1%
2021-11
4%
2023-05
0%
2024-10
~4% coastdown (this unit)
Composite Operational Excellence Score for Braidwood 2 — average percentile rank across 7 publicly observable metrics in three sub-scores: Reliability (capacity factor, forced outage days, B2B avg streak), Efficiency (fuel utilization, refuel duration), and Discipline (startup duration, scram count). Toggle the time window (3yr / 5yr / Lifetime) to see how this unit's standing shifts. Each dimension percentile-ranked across the active US fleet. Sub-score = average of components. Composite = average of the three sub-scores.
NukeWorker's Operational Excellence Score 5-yr composite · ranks 5 of 93 →
NukeWorker scores Braidwood 2's operational excellence at 87 out of 100 over the past five years, ranking it 5 of 93 reactors in the active US fleet. The score blends reliability, efficiency, and operating discipline drawn from public performance data.
Time window
5-yr trend:
Stable vs 2025
Compare Braidwood 2 head-to-head with up to 3 other units.
Compare now
Capacity Factor (365-Day)
100%
Current
94.3%
365-Day Avg
#56
of 94 plants
Min: 0%
Max: 100%
23 days <80%
ELITE B2B CHAMPION
5+ RUNS CLEAN
4,813 days without a trip
·
10 Career Runs · 8 since last trip
Champion since Sep 3, 2015
Breaker-to-Breaker Runs 10 runs
Breaker-to-breaker runs measure continuous operation between refueling outages using a cycle-adjusted threshold (90% of cycle length minus RFO duration). An active streak means the unit has been running continuously since the last refueling with no trips to 0% power.
Braidwood 2 has logged 10 breaker-to-breaker runs, continuous stretches from one refueling to the next with no trip to zero power. Its longest ran 548 days, and its runs average 526 days.
548
Best Run (days)
A2R18 (2015-10-24) → A2R19 (2017-04-24)
526
Avg Run (days)
★ 8-run breaker-to-breaker
A2R17 → A2R18 → A2R19 → A2R20 → A2R21 → A2R22 → A2R23 → A2R24 → A2R25
All Runs
| 2024-10-25 | 2026-04-20 | 542 days | A2R24 → A2R25 |
| 2023-05-13 | 2024-10-07 | 513 days | A2R23 → A2R24 |
| 2021-11-06 | 2023-04-24 | 534 days | A2R22 → A2R23 |
| 2020-05-06 | 2021-10-18 | 530 days | A2R21 → A2R22 |
| 2018-11-01 | 2020-04-20 | 536 days | A2R20 → A2R21 |
| 2017-05-21 | 2018-10-08 | 505 days | A2R19 → A2R20 |
| 2015-10-24 | 2017-04-24 | 548 days | A2R18 → A2R19 |
| 2014-05-23 | 2015-10-05 | 500 days | A2R17 → A2R18 |
| 2011-05-12 | 2012-10-15 | 522 days | A2R15 → A2R16 |
| 2005-05-05 | 2006-10-16 | 529 days | A2R11 → A2R12 |
Outage Duration Trend
?Scheduled refueling outage durations over time. Green bars are below average, yellow near average, red above. Dashed line shows the plant's historical average. Shorter outages mean better execution.
Braidwood 2 has completed 19 scheduled refueling outages on record, averaging 20 days each. The most recent, in Apr 2026, ran 17 days.
Power History (12-Month)
?Daily power output as a percentage of rated capacity over the past 365 days. Green segments indicate full power (90%+), yellow shows reduced output, and red indicates significant power reductions or shutdowns.
Over the past 12 months Braidwood 2 has run at an average of 94.3% of rated power. On the chart, green stretches are full-power running and dips toward zero mark reduced output or outages.
Outage Days by Year
?Total days spent in outage each year, split by scheduled refueling (blue) and forced/unplanned (red). Lower totals indicate better reliability and outage execution. Hover for details.
Across its recorded history, Braidwood 2 has spent 389 days in scheduled refueling outages and 45 days in forced or unplanned outages. Taller bars mark the years with the most downtime.
Facility Statistics
Key performance and lifecycle metrics calculated from NRC operational data. Includes operating age, construction timeline, capacity factor, efficiency, generation totals, and reliability records.
Braidwood 2 has operated for about 37.9 years and averaged a 94.7% lifetime capacity factor, generating roughly 267.3 TWh of electricity. Its longest unbroken run reached 549 days.
Lifecycle & Tenure
Operating Age: 37.9 Yrs
Build Time: 12.8 Yrs
Lic. Remaining: 21.3 Yrs
Production & Power
Lifetime CF: 94.7%
Efficiency: 31.7%
Generated: 267.3 TWh
Reliability & Outages
Record Run: 549 Days
Refuelings: 19
Avg Startup: 3.7 Days
NukeWorker Member Ratings 36 votes
Community ratings from NukeWorker members. Vote to share your experience working at this facility. Score uses a Bayesian average that accounts for vote count — facilities with few votes are pulled toward the fleet average, so rankings reflect confidence, not just raw percentages.
Above Average
12 (33%)
Average
8 (22%)
Below Average
16 (44%)
Facility Map
Interactive satellite map showing the facility's geographic location. Marker color indicates current status: green for online, red for offline, orange for reduced power. Click the header to open in Google Maps satellite view.
41.2434, -88.2297
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Phone:
(815) 417-2000
Website:
http://www.exeloncorp.com
Per Diem Rates FY 2026
Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from GSA for FY 2026.
$110
Lodging/Night
$68
M&IE/Day
$178
Total/Day
Standard Rate, IL
Unemployment Benefits IL
Maximum state unemployment insurance benefits for IL. Actual benefits depend on your earnings history and may be lower than the maximum. Data as of Jan 2026.
$859
Max Weekly
26
Max Weeks
$22,334
Max Total
7-day waiting period before benefits begin
Jobs at Braidwood 16 active
Active job listings posted for this specific facility on the NukeWorker job board. Click a job title for details, or the header to see them all.
More Jobs in IL 148 active
Active nuclear industry job listings in IL from the NukeWorker job board. Click a job title for full details, or click the header to search all jobs in this state.
Photos
Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.
Ownership & Construction
The utility or company that owns and operates the facility, the architect-engineer responsible for plant design, and the primary construction contractor. Click names to view all facilities by that entity on the map.
CEG
Constellation Energy Corporation
NasdaqGS
$298.96
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Previous Close
285.05
Day's Range
284.04 – 299.73
52-Week Range
228.63 – 412.70
Volume
2,898,472
Delayed quote as of Sep 4, 2026 4:00 PM ET.
Source: Yahoo Finance.
Full quote on Yahoo Finance
Technical Specs
Reactor design specifications including type (PWR/BWR), containment design, nuclear steam supply system manufacturer, thermal and electrical power ratings, and current operational status.
Reactor Type:
PWR
Containment:
PWR-DRYAMB
NSS Supplier:
WEST 4LP
Thermal Power:
3645 MWt
Net Capacity:
1154 MWe
Efficiency:
31.7%
Status:
Operating
Licensing
NRC licensing history including docket number, license type and number, construction permit date, operating license issuance, commercial operation date, license renewal, and expiration date.
Docket #:
05000457
License #:
NPF-77
License Type:
OL-FP
Const. Permit:
1975-12-31
Operating Lic:
1988-05-20
Commercial Op:
1988-10-17
License Renewed:
2016-01-27
License Exp:
2047-12-18
Market & Region
EIA market and grid-region classifications: NERC reliability region, U.S. Census region, balancing authority responsible for grid operations, and whether the unit operates as a rate-regulated utility or a competitive merchant generator. Hover any value for the full name.
NERC Region:
RFC
— Reliability First Corporation
Census Region:
ENC
— East North Central
Balancing Authority:
PJM
— PJM Interconnection (ISO/RTO)
Market Structure:
Merchant
— Competitive generator selling into wholesale markets