Gas

Gas turbine manufacturers aren’t selling as many machines today as they did in the hyperactive 1990s. But they are still continuing to refine G-Class technology. It has been about eight years since the first steam-cooled SGT6-6000G from Siemens Power Generation entered service. Take a quick tour of what must now be considered a mature gas turbine technology.

World’s largest PV plant now in Portugal; latan 2 construction may resume; Allegheny to scrub Fort Martin plant; TVA will clean up big Dutch CC plant; Connecticut blesses six fuel cell projects; DOE approves IGCC plant in Florida; FERC relicenses Osage hydro plant; A nanotech perpetual motion machine?; POWER digest

Control pollution and slagging on a shoestring / Keeping HRSGs young, cool, and clean / Natural air conditioning

Winter storms ravage Nebraska grid / Waste-fired plant coming to Arizona / Wartsila lands jobs in Azerbaijan, Sweden / Yet another controversial LNG project / Siemens lands two-gasifier order in China / IndyCars drink nothing but ethanol / New Otto/diesel engine to debut in Russia / POWER digest / Readers talk back

With domestic reserves of natural gas declining and demand for gas rising, imported liquefied natural gas will increasingly fill the shortfall in U.S. pipeline supply. More than 40 LNG receiving/regasification terminals on three coasts are in various stages of development. Yet many questions about the operational and emissions impacts of the "hotter" LNG imports on today’s cleaner-burning gas turbines remain unanswered.

The 2005 amendment to the 1978 Public Utility Regulatory Policies Act created some unique challenges for the design of cogeneration plants in general and combined-cycle cogeneration plants in particular. Because utilities are no longer obligated to buy electricity at "avoided cost" from qualifying facilities, plant owners must simultaneously balance power and thermal demand efficiently and economically. Here’s a prescription for your next plant design.

China to buy four AP1000 reactors / Midwest Gen, Blagojevich reach pollution deal / Behold, the carpet gasifier / AREVA casks green-lighted by NRC / Brookfield Power upgrades Oswego Falls / Korea fires up 50-MW landfill gas project / Alstom lands big Russian deal / POWER digest / Correction

U.S. demand for natural gas is projected to increase by more than 50% by 2020. Companies are building—and the public is opposing—receiving terminals on three coasts that would increase imports of liquefied natural gas. The pros and cons of "opening up" Alaska, coastal waters, and federal lands to drilling are still being debated. These politically […]

Forecasting the direction of the U.S. electric power industry for 2007, much less the distant future, is like defining a velocity vector; doing so requires a direction and speed to delineate progress. In this special report, POWER’s first stab at prognostication, the editors look at current industry indicators and draw conclusions based on their more than 100 years of experience. To borrow verbatim the title of basketball legend Charles Barkley’s book: I May Be Wrong but I Doubt It.

Following the money invested in projects is a viable way to compare growth trends for power projects using the four major generation types: coal, natural gas, nuclear, and renewable.