Castlerock Green Energy
Castlerock Green Energy is an operating sustainable aviation fuel plant in Shelton, Washington, United States. Its announced capacity is 58 thousand tonnes a year (72 million litres, 19 million US gallons), by the Fischer-Tropsch pathway. It has been operating since 2022. The record comes from the SAFxCHANGE producers table of December 2023, updated from the news since.
The record
- Owner
- Castlerock Green Energy
- Place
- Shelton, Washington, United States (47.213, -123.106)
- Pathway
- Fischer-Tropsch (recorded as "FT-SPK")
- Fuel
- sustainable aviation fuel
- Status
- operating
- Announced capacity
- 58 thousand tonnes a year · 72.5 million litres · 19.2 million US gallons
- Operating since
- 2022
- Where the record came from
- The SAFxCHANGE producers table of December 2023, updated from the news on 2025-09-16.
- Notes
- ; start_year from article 3457 (2022-04-01); status from article 8197 (2025-09-16)
Capacity is as announced, a year, with tonnes counted at 0.8 kilograms per litre; a plant's own figure may differ. A record "settled by rule" was read from an article by the reader and checked only against the site's rules (a plausible size, a real owner, no duplicate), not by a person. Cite as: eFlight SAFxCHANGE, Castlerock Green Energy: sustainable aviation fuel plant record, https://eflight.com/saf/plant/castlerock-green-energy, retrieved 2026-10-18. Terms. To correct the record, write to [email protected].