?
Current reactor power level from the most recent NRC daily report.
Shut Down
?
Days of continuous operation since the last outage ended. Ranked against all operating units.
2,519
Current Run
days
?
Longest recorded period of continuous operation between outages.
2,519
Record Run
days
?
Breaker-to-Breaker runs — continuous operation exceeding the cycle-adjusted threshold (614 days for this 24-month cycle unit) with no trips to 0% power.
--
B2B Runs
?
Lifetime capacity factor: average power level across all recorded days (100% = always at full power). Ranked against all NRC-tracked units.
88.9%
Capacity Factor
?
Community rating score (Bayesian-adjusted). Based on 64 votes. Ranked against all rated facilities.
47.6
Rating
64 votes
#76 of 97
Bottom Quartile
?
Total NRC-reported scram events (emergency reactor shutdowns). Ranked fleet-wide — fewer scrams = better rank.
13
Scrams
?
Years since commercial operation began.
46.5
Operating Age
years
Scram History 13 events since 2011
Automatic and manual reactor scram (emergency shutdown) events reported to the NRC since 2011. Includes event dates, trip type, and average recovery time. Click the title to view the full fleet scram dashboard.
Pilgrim 1 has recorded 13 reactor scrams, or emergency shutdowns, since 2011 (6 automatic, 7 manual). On average the unit was back to full power about 10.3 days after each trip.
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.
Pilgrim 1 has completed 11 scheduled refueling outages on record, averaging 37 days each. The most recent, in Jun 2019, ran 87 days.
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, Pilgrim 1 has spent 410 days in scheduled refueling outages and 219 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.
Pilgrim 1 has operated for about 46.5 years and averaged a 88.9% lifetime capacity factor, generating roughly 110.2 TWh of electricity. Its longest unbroken run reached 2,519 days.
Lifecycle & Tenure
Operating Age: 46.5 Yrs
Build Time: 4.3 Yrs
Lic. Remaining: N/A Yrs
Production & Power
Lifetime CF: 88.9%
Efficiency: 34.3%
Generated: 110.2 TWh
Reliability & Outages
Record Run: 2,519 Days
Refuelings: 11
Avg Startup: 7.9 Days
NukeWorker Member Ratings 64 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
20 (31%)
Average
18 (28%)
Below Average
26 (40%)
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.
41.944, -70.5778
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Phone:
(508) 830-8000
Website:
http://www.entergy-nuclear.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.
$126
Lodging/Night
$80
M&IE/Day
$206
Total/Day
Plymouth / Taunton / New Bedford, Plymouth / Bristol County, MA
Unemployment Benefits MA
Maximum state unemployment insurance benefits for MA. Actual benefits depend on your earnings history and may be lower than the maximum. Data as of Jan 2026.
$1,105
Max Weekly
30
Max Weeks
$33,150
Max Total
7-day waiting period before benefits begin
Jobs in MA 5 active
Active nuclear industry job listings in MA 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.
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:
BWR
Containment:
BWR-MARK 1
NSS Supplier:
GE 3
Thermal Power:
1998 MWt
Net Capacity:
685 MWe
Efficiency:
34.3%
Status:
Decommissioned
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 #:
05000293
License #:
DPR-35
License Type:
OL-FP
Const. Permit:
1968-08-26
Operating Lic:
1972-09-15
Commercial Op:
1972-12-01
License Renewed:
2012-05-29
License Exp:
2012-06-08