Hybrid CSTP/Natural Gas Power Plant Under Construction In Florida

The following information supplements the post of December 7, 2008 on a co-located solar/natural gas-fired power plant in Indiantown, Florida.

Co-locating industrial-scale solar power plants with existing fossil-fuel fired power plants can be an economical solution to power transmission and other problems. Co-location allows clean energy to be phased in as fossil-fuel energy is phased out, with the fossil-fuel energy plant becoming a backup, then eventually becoming unnecessary as solar heat storage technology improves.

Solar radiation is available onsite, whereas fossil fuels must be continually mined and transported to the old-technology plant. Co-locating solar power on the existing plant site takes advantage of transmission infrastructure already in place, avoiding costs of building extensive new transmission lines. Solar power plants avoid many of the water-use and land- and water-pollution problems of old-technology power plants. Thus, opportunities for land and water systems restoration after abandoning fossil-fuel power plants will increase substantially.

Lauren Engineers & Constructors and Florida Power & Light Company Building Martin Next Generation Solar Energy Center in Indiantown, Florida.

Lauren Engineers & Constructors is working with NextEra Energy Resources, a Florida Power & Light Company (FPL) Group Company on a new 75-megawatt (MW) concentrating solar thermal power (CSTP or CSP) facility.

The CSTP part of the facility will employ parabolic trough mirror technology and include approximately 180,000 parabolic mirrors on 500 acres of land. Solar power output is expected to be 155,000 megawatt-hours (MWhr) annually.

Artist's Conception of the FPL Martin Concentrating Solar Thermal/Natural Gas-Fired Power Plant, Indiantown, Florida.

Lauren Engineers & Constructors also worked with ACCIONA to build the Nevada Solar One Power Plant, a 64 MW parabolic mirror facility located in Boulder City, Nevada. This plant went online in June, 2007.








Nevada Solar One Concentrating Solar Thermal Power (CSTP) Plant, Boulder City, Nevada. This facility uses parabolic mirror technology and 182,000 curved mirrors, occupies 400 acres of land, and generates 64 megawatts (MW) of power. The plant began operating in June, 2007. Photograph: CNET News, March 12, 2007.


















Detail views of Nevada Solar One CSTP Plant showing parabolic mirror arrangement. The parabolic mirrors are aligned on north-south axes, and rotate from east to west throughout the day to track the sun. The mirrors focus sunlight on an oil-filled pipe that carries the heated oil to a heat exchanger. The heat exchanger creates steam that powers an electricity-generating turbine. Photographs: Acciona U.S. Projects.

USA Installs 1,265 Megawatts (MW) Of Solar Power In 2008

New Solar Energy Industries Association (SEIA) Report Details Solar Power Growth In The USA.

Xcel/SunEdison solar photovoltaic heliostats, 8.24 Megawatt (MW) Solar Photovoltaic (PV) Powerplant, San Luis Valley near Mosca, Colorado. This powerplant was activated in December 2007. View is eastward towards Sangre de Cristo Mountains.
Photograph by L.A. Brown, March 18, 2009.

The Solar Energy Industries Association (SEIA) released its 12-page summary report, 2008 U.S. Solar Industry Year in Review.

The report states 1,265 megawatts (MW) of solar power of all varieties were installed in the USA in 2008. These include 342 MW of solar photovoltaic (PV) installations, 139 MWTh (megawatts thermal equivalent) of solar water heating, 762 MWTh of pool heating, and an estimated 21 MW of solar space heating and cooling.

Surface detail of Xcel/SunEdison solar PV heliostat, Mosca, Colorado, showing reflective metal triangular ridges that focus solar radiation on solar PV receptors. Photograph by L.A. Brown, March 18, 2009.

California was the leader among state grid-tied PV installations with 178.6 MW, New Jersey followed with 22.5 MW installed, Colorado was next at 21.6 MW, Nevada installed 13.9 MW and Hawaii with 11.3 MW. For solar water heating systems, Hawaii led states, installing 37 percent of the total U.S. systems in 2008, followed by Florida at 20 percent, California with 7 percent and both Colorado and Arizona with 5 percent. The Mid-Atlantic States, an important emerging region for solar, installed 7 percent of solar water heating systems.

Close-up of solar PV receptors and reflective metal triangular ridges, Xcel/SunEdison heliostat, Mosca, Colorado. Note dirt on panel surfaces and dents in metal reflectors caused by hail. Photograph by L.A. Brown, March 18, 2009.

The SEIA report indicates solar PV manufacturing capacity in the USA increased by 65 percent in 2008. this created many new jobs in California, Michigan, Ohio, Oregon and Tennessee. Total solar power production capacity in those five states now stands at approximately 685 megawatts (MW).


















Solar panels, Xcel/SunEdison 8.24 MW Solar Photovoltaic Power Plant, Mosca, Colorado. These panels are supported by north-south aligned axles that rotate the panels from east to west throughout the day to track the sun. View is northeastward in the afternoon towards the Sangre de Cristo Mountains that form the eastern border of the San Luis Valley. Photograph by L.A. Brown, March 18, 2009.

The SEIA report notes that no new concentrating solar power (CSP) plants came online in the USA in 2008. However, CSP projects in the planning or construction stages currently total more than six gigawatts (GW; 6 GW = 6,000 megawatts). Among these are projects planned for California's Mojave Desert, Arizona and Florida.