SIMPSON TACOMA KRAFT BIOMASS
Retired 2023Biomass power plant
- Capacity
- 64 MW
- Primary fuel
- Biomass
- County
- Pierce County
- Operator
- SIMPSON TACOMA KRAFT CO LLC
- EIA plant ID
- 57099
- Coordinates
- 47.2659, -122.4275
SIMPSON TACOMA KRAFT BIOMASS, a retired 64 MW Biomass power plant in Pierce County, Washington. It was retired in 2023, according to EIA-860.
How SIMPSON TACOMA KRAFT BIOMASS compares
It was retired in 2023 according to EIA-860, so it is not counted in Washington's operating fleet. It shares Pierce County with 6 other operating plants, including FREDERICKSON POWER LP and FREDERICKSON.
Grid neighborhood
The nearest named substation is SIMPSON TACOMA KRAFT BIOMASS, about 0.2 miles away; the closest transmission line found within 10 miles is a 115 kV line owned by CITY OF TACOMA - (WA), under 0.1 miles away. Another 5 operating power plants totaling 536 MW sit within 25 miles; the largest is FREDERICKSON POWER LP (318 MW, Natural Gas). Within 50 miles are 7 mapped data centers; the nearest is Intergate West / Digital.forest / Fortress in Tukwila, about 17.0 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860 retirement records and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
SIMPSON TACOMA KRAFT BIOMASS is a retired 64 MW biomass power plant in Pierce County, WA, formerly operated by SIMPSON TACOMA KRAFT CO LLC. Pierce County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.2 of 5 at the 4th national percentile. Earthquake is the leading peril, rated Relatively High by FEMA at the 98th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a biomass plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Pierce County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively High | 98th | 4.9 of 5 | 0.04 |
| Heat wave | Relatively High | 64th | 3.6 of 5 | 3.8 |
| Coastal flooding | Relatively Moderate | 55th | 3.2 of 5 | 3.1 |
| Wildfire | Relatively Low | 38th | 2.5 of 5 | <0.01 |
| Riverine flooding | Relatively High | 30th | 2.2 of 5 | 0.11 |
| Ice storm | Relatively High | 22nd | 1.9 of 5 | 0.64 |
| Strong wind | Relatively Low | 8th | 1.3 of 5 | 0.01 |
| Lightning | Relatively High | 6th | 1.2 of 5 | 9.3 |
| Hail | Very Low | 5th | 1.2 of 5 | 0.03 |
| Winter weather | Relatively Moderate | 4th | 1.2 of 5 | 27.0 |
| Tornado | Relatively Low | 4th | 1.1 of 5 | 0.07 |
Perils not assessed in Pierce County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Pierce County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.