GPA uses the following fuels: High Sulfur Fuel Oil (HSFO), Low Sulfur Fuel Oil (LSFO), Number 2 diesel distillate (DIESEL), and Low Sulfur Diesel.
Sulfur Fuel and Low Sulfur Fuel Oils are residual
fuel oils with maximum 2.0% and 1.19% sulfur content
by weight, respectively.
Power plants within the Cabras/Piti area must comply with the Cabras/Piti Area Intermittent Control Strategy (CPAICS) as required by the 69.11 (a)(3)(i) of 40 CFR Part 69 Subpart A, as amended, and any modification to the CPAICS approved by USEPA as defined in 69.11(a)(3)(ii).
Under the CPAICS, GPA is allowed to use higher sulfur fuel at its Cabras-Piti facility whenever 15-minute average wind direction and wind speeds are within acceptable limits. Outside these acceptable limits, GPA must use LSFO. This arrangement saves ratepayers approximately $3.5 million annually. Tanguisson Power plant has no restrictions on HSFO use.
GPA uses Low Sulfur Diesel at its Tenjo Vista medium speed diesel plant. It uses DIESEL at its combustion turbines and medium speed diesel plants.
DIESEL is much more expensive than HSFO. In April
2007, DIESEL prices averaged $92.00 per barrel ($/BBL).
Meanwhile, HSFO averaged only $50.00 per barrel ($/BBL)
and LSFO averaged $56.00 per barrel ($/BBL).
the Purposes of the Levelized Energy Adjustment Clause
(LEAC) Cylinder Oil is considered a reimbursable fuel
104 kB pdf
Fuel Oil Specifications download
218 kb pdf