Martin Next Generation Solar Energy Center is the solar parabolic-trough component of an

integrated solar combined cycle A combined cycle power plant is an assembly of heat engines that work in tandem from the same source of heat, converting it into mechanical energy. On land, when used to make electricity the most common type is called a combined cycle gas turb ...

(ISCC) 1150 MW plant, in western Martin County,

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

, just north of Indiantown. The project was built by Florida Power & Light Company (FPL). Lauren Engineers & Constructors (Abilene, TX) was the EPC contractor for the project. Its construction began in 2008 and was completed by the end of 2010. The ISCC plant is part of the Martin Plant site which consists of 5 units. Unit 1 & Unit 2 are 800 MW steam electric generating units that use

natural gas Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...

and low-sulfur residual oil. Unit 3 & Unit 4 are 500 MW natural gas-fired combined cycle units. Unit 8 is a natural gas fired 4-on-1 combined cycle unit with a nominal capacity of 1150 MW. Light oil is used as backup. Unit 8, placed into commercial operation in 2005, is integrated with the solar plant. Unit 8 features four 170 MW gas turbines, one 470 MW steam turbine, and a single condenser and cooling tower The single solar field circuit heats 4 steam generators, after each

gas turbine A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part (known as the gas generator or core) and are, in the directio ...

. The Martin solar thermal facility is designed to provide steam for FPL's existing Martin Unit 8 combined cycle unit, thus reducing FPL's use of natural gas. No additional capacity (MW) will result from the operation of the solar thermal facility. The Solar Energy Center has an array of approximately 190,000-mirror

parabolic trough A parabolic trough is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined with a polished metal mirror. The sunlight which enters the mirror parallel to its plane of symmetry is foc ...

s on about of the Martin County plant. The solar collectors feed heat to the existing steam plant, displacing gas generated electricity at an estimated rate of 155,000 MWh per year. The 2012 solar-derived production was about 89,000 MWh of power, according to records filed with the state’s Public Service Commission, which was 42% less than projected when the plant got approval. The solar component can generate electrical energy only if the four gas turbines are in operation, otherwise the 470 MW steam turbine will not move. When gas turbines are stopped, the solar heat is used to keep the steam turbine in temperature, in order to facilitate a more rapid start-up. FPL expects the $476 million solar plant to reduce the

combined-cycle A combined cycle power plant is an assembly of heat engines that work in tandem from the same source of heat, converting it into mechanical energy. On land, when used to make electricity the most common type is called a combined cycle gas turb ...

power plant's

consumption by 1.3 billion cubic feet (37 million m³) per year. Over the 30-year life of the project, this is expected to save $178 million in fuel cost and reduce carbon emissions by 2.75 million tons. Excess pressure and a release of operating fluid led to the plant being shut down for four months in 2011 for cleanup and testing. As of , no additional concentrated solar plants are planned for

, although in 2007 FPL had planned on building a 300 MW Fresnel solar thermal plant.Big Solar Thermal Power Plants Planned for Florida, California
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Production

References

External links

* {{Solar power in the United States Solar power stations in Florida Martin County, Florida Energy infrastructure completed in 2010 2010 establishments in Florida Solar thermal energy