The Florida Department of Environmental Protection on July 8 issued a final air permit approval for a Duke Energy Florida test burn program, to be completed by the end of this year, at the coal-fired Crystal River Units 1 and 2.
Said the DEP approval: “The test burn program will involve the temporary installation, testing, and operation of new coal blends, equipment, and process. The coal blending of Powder River Basin (PRB) with Western Bituminous (WB) will be done offsite to reduce fugitive emissions impacts.As part of the test burn program, Units 1 and 2 will have additional temporary post combustion controls such as hydrated lime injection and activated carbon injection upstream to the electrostatic precipitator. This authorization is only for a test lasting no more than ninety days in duration to determine whether this fuel blend along with post combustion controls reduces overall emissions impact.”
The worst case emission scenario would be firing WB coal only. The test burn program is being initiated by this Duke Energy (NYSE: DUK) subsidiary in an attempt to reduce overall emissions such as particulate matter, acid gases, and mercury to determine the potential for units 1 and 2 to comply with the federal Mercury and Air Toxics Standards (MATS) during the 2015 through 2020 timeframe.
The Crystal River plant has traditionally been fired with Central Appalachia coal. U.S. Energy Information Administration data shows that the plant got its coal in the first quarter of this year from these suppliers, all from eastern Kentucky origins: B&W Resources, Arch Coal Sales, James River Coal, Blackhawk Mining and Alpha Natural Resources (former Massey Energy operations).
Crystal River Units 4 and 5 are coal-fired facilities that are newer, bigger and retrofitted recently with new emissions controls, so they are not part of this program. Unit 3 is a shut nuclear facility.
In April 1 testimony filed at the Florida Public Service Commission, utility official Benjamin Borsch said the utility cannot continue to operate the Crystal River Units 1 and 2 without implementation of additional measures to bring the units into compliance with MATS. Accordingly, the two main options that PEF considered were: installing new emission control systems to reduce NOx, SO2 and mercury emissions; and retiring the units and replacing the generation.
DEF has decided that installing emission controls at Crystal River Units 1 and 2 is not the most cost-effective option. PEF is now evaluating alternative fuel options that would allow Crystal River Units 1 and 2 to continue operating in compliance with MATS for a limited period of time, which is the reason for the coal test burns. If these tests are successful, it may be possible for PEF to extend Crystal River Units 1 and 2 operations to the 2018-2020 timeframe while still being in compliance with MATS.
Here are net capacity, plus projected capacity factors and coal burn figures for Crystal River Units 1 and 2 in 2013, as filed by the company with the Florida commission.
- Unit 1, 376 MW, 11.4% capacity factor, 165,226 tons of coal burn; and
- Unit 2, 497 MW, 24% capacity factor, 459,548 tons of coal burn.