Archive: Renewables


Gas turbine "refueling" via IGCC

The jury is still out on the economic and technical feasibility of burning gasified coal to generate electricity. Gasification technology has yet to be proven on a utility scale, especially with Powder River Basin coal as the feedstock. And on the generation side, there are more questions than answers about the capital cost and availability of integrated gasification combined-cycle (IGCC) plants. But with natural gas prices high and rising, it’s definitely worth examining whether it would be economically and technically feasible to convert the existing U.S. fleet of gas-fired combined-cycle plants to burn gasified coal.


Peru commissions hydro plant

The 130-MW Yuncán  hydroelectric plant (Figure 4) has come online in Peru about 210 miles northeast of Lima. To show his support for the project, Peruvian President Alejandro Toledo Manrique attended the inauguration ceremony. Yuncán  was commissioned just 21 months after the Peruvian government awarded a 30-year contract to operate the plant to EnerSur, the […]


Atlantic City bets on renewables

New Jersey’s gaming mecca is hosting one of the largest hybrid (solar-wind) power plants in the world (Figure 3). The Jersey-Atlantic Wind Farm, with 7.5 MW of wind capacity and 0.5 MW from photovoltaic (PV) cells, is expected to generate 20,000 MWh annually. That should be enough to power an adjacent wastewater treatment plant operated […]


Gas-fired tomatoes

Abating the emissions of power plants is a very hot topic these days. So it’s not surprising that people are coming up with innovative ways to not only cut emissions but also make money from them. The latest brainstorm comes from—where else—the Massachusetts Institute of Technology, where Moshe Alamaro, an atmospheric scientist, has come up […]

Tapping the western sun

In an effort to tap the significant solar energy resources of New Mexico, Arizona, Nevada, California, Utah, Texas, and Colorado, the U.S. DOE will support efforts to install a total of 1,000 MW of concentrating solar power (CSP) systems over the next five years. "This initiative will provide a substantial engine for economic development, job […]


Fuel cells reach MW class

Most people think of fuel cells within a single, "not ready for prime time" context: powering tomorrow's automobiles. But stationary fuel cell power plants are beginning to power some industrial facilities today. The need for heat as well as ultraclean power, and the availability of a renewable fuel, recently came together in a Seattle suburb, site of the world's first commercial megawatt-scale fuel cell power plant—powered entirely by gas produced by anaerobic digestion of municipal wastewater.

Promoting renewable exports

  Promoting renewable exports The DOE is not the only U.S. government department promoting renewable energy. Any U.S. energy firm or supplier looking to export its goods and services can tap the services of the Energy Team at the Commerce Department’s International Trade Administration (ITA), which is part of the U.S Commercial Service (USCS). The […]


Renewable energy’s growing share

  Renewable power development will continue to grow in the U.S., with the nonhydro total reaching 53,121 MW by the end of 2016. So predicts a soon-to-be-released report from Boulder, Colo.–based Platts Analytics (which, like POWER, is a part of Platts, a division of The McGraw-Hill Companies). If all that capacity goes on-line, it would […]