Florida Power & Light on Aug. 25 was issued a final air construction permit from the Florida Department of Environmental Protection for a major revamp of its gas-fired Lauderdale Plant.
FPL is a regulated utility owned by NextEra Energy (NYSE:NEE).
At the Lauderdale Plant, gas turbine (GT) Units 1 through 12 began operation in August 1970 while GT Units 13 through 24 began operation in August 1972. The Lauderdale Plant is located in Broward County.
In addition to units GT1 through GT24, the Lauderdale Plant currently consists of two combined-cycle units (Unit 4 and Unit 5) and five fuel storage tanks. Each combined-cycle unit consists of two combustion turbines (CTs) which each exhaust through a separate heat recovery steam generator (HRSG). Each HRSG converts the heat from the CT exhaust into steam. The steam produced from the two HRSG units drives one steam turbine electrical generator (STEG). Each combined-cycle unit has a net summer continuous capability of 430 MW.
Under this now-approved permit, the generation capacity of 22 of the 24 existing peaking GTs will be replaced with five nominal 200-MW CTs to provide equivalent peaking resources to reduce emissions while providing far superior emission profiles and efficiency. The new CTs will be designated Units 6A through 6E. Two of the 24 existing GTs will be retained for the purposes of black start capability and generation. The Lauderdale project will add a 300 horsepower (hp) fire pump engine using ULSD oil. Finally, the Lauderdale project will also use two 3-million gallon ULSD fuel oil storage tanks.
The new CT model proposed for the project is the General Electric 7F.05. Each CT will utilize inlet air cooling and wet compression. The CT will be designed for operation in simple cycle mode and will have dual-fuel capability (natural gas and ULSD fuel oil).
Lauderdale in a group of new gas projects in the works
This is one of several gas-fired projects that Florida Power & Light outlined in a Ten Year Power Plant Site Plan filed April 1 at the Florida Public Service Commission. Those new gas-fired additions are:
- The Fort Myers plant additions would be two CTs, of 211 MW (summer net, plus 20 MW peaking capacity) apiece, to be commercial in 2016. The existing plant consists of one natural gas-fired combined cycle (CC) unit, two natural gas- and oil-fired CT units, and one bank of 12 oil-fired GTs (peaking facilities) that have a combined capacity of 2,403 summer MW. Presently, the bank of 12 first generation GTs (which started operation in the early 1970s) provide power during periods of peak demand and black start capability in the event of a power outage. FPL plans to add the two new CTs and retire ten of the existing GTs by the end of 2016. The two new CTs will be more efficient with cleaner air emissions than the existing GTs. In addition, the two existing CTs will be upgraded to produce additional generation capacity.
- At Lauderdale the plan is for five CTs of the same capacity as those at Fort Myers, also to be commercially operating in 2016. The Lauderdale Plant currently includes two combined cycle units and two banks of 12 first generation simple cycle GTs that began operation in the early 1970s. These GTs are used to serve peak and emergency demands in a quick-start manner. Each bank of GTs has a net capacity of 420 MW and they are authorized to operate on natural gas and distillate oil. This GT removal with CT replacement is assumed to occur by the end of 2016.
- Due for commercial operation in 2019 would be the brand-new Okeechobee Clean Energy Center, which is a gas-fired, combined-cycle project of 1,622 MW (net summer) in size. FPL owns 2,800 acres of land in Northeast Okeechobee County. FPL plans to use about 200 acres of this land for this project. A CC unit at this site has been determined to be FPL’s best self-build option for meeting its capacity needs beginning in 2019. In March 2015, FPL issued a request for proposals (RFP) to solicit proposals from outside parties for meeting this capacity need. Natural gas-fired CC generation at the site is possible due to the proximity to existing and planned natural gas pipelines.
- There is also a gas-fired project called the “Unsited 3×1 CC,” which would go commercial in 2023 and be 1,317 MW (summer net) in size.