POWER [September, 15 2007]

Cover Stories

Al Ezzel Power Plant, Isle of Muharraq, Bahrain

Bahrain began privatizing its electricity and water-supply sectors three years ago, and the Al Ezzel Power Plant represents the first fruit of that strategic shift. The 950-MW plant, powered by two identical 2 x 1 combined-cycle units that burn natural gas, went commercial in May of this year. The plant now supplies about half of the national grid's demand. The success of this fast-track project demonstrates the advantages of free markets and the wisdom of bringing in experts to build new capacity.

Groton Generating Station, Groton, South Dakota

This plant's main claim to fame: It marks the commercial debut of GE's 100-MW LMS100 gas turbine-generator. According to Basin Electric, over the unit's first year of service it has demonstrated top-notch operating flexibility in peaking, mid-range, and baseload service, thanks to capabilities such as 10-minute cold start-ups and minimal impact on heat rate at partial loads. In addition to hosting the first LMS100, Groton Generating Station earns recognition as one of POWER's Top Plants for the attention its design pays to reliability and resource planning.

GTAA Cogeneration Complex, Mississauga, Ontario, Canada

When a blackout shuts down a factory, the impact isn’t apparent to the public. But lose power at an international airport, and thousands of angry travelers and the people waiting for them won’t be interested in excuses. The Greater Toronto Airports Authority learned that lesson in August 2003. Ten months later, it began building a 117-MW cogeneration plant that is now capable of supplying all of its energy needs—not just electricity, but space heating and chilled water as well.


Port Arthur II Integrated Hydrogen/Cogeneration Facility, Port Arthur, Texas

The rationale for a typical cogeneration plant is clear: Supply some power, and maybe some steam, to an industrial host and save energy dollars on both sides of the fence. But integrating a cogen plant that also produces hydrogen with a major refinery that operates 24/7 is a job best left to a company with diverse and proven technology skills. The Air Products Port Arthur II project proves that such a job can be done right. Accordingly, it is one of POWER's natural gas–fired Top Plants of 2007.

Port Westward Generating Plant, Clatskanie, Oregon

Since going commercial this June, Port Westward Generating Plant has taken its rightful place as one of America's most efficient power stations. It is now helping to satisfy Portland General Electric's summer demand reliably and cost-effectively. What differentiates Port Westward is its pioneering use in the U.S. of Mitsubishi Heavy Industries' G1 class combined-cycle combustion turbine.

Tenaska Virginia Generating Station, Scottsville, Virginia

Not every facility that POWER singles out as a Top Plant has a unique design. Some, like this one, may be recognized for an excellent operations record and being a good corporate citizen. At Tenaska Virginia Generating Station, a formal program to make O&M personnel aware of best industry practices—and apply them on the job—has shortened the plant's start-up time and elevated its availability, making it much more dispatchable and profitable.

Features

Biofouling control options for cooling systems

The infrequent or improper introduction of biocides into a plant cooling system may make fouling within it worse, by creating thick biofilms that can foster corrosion, reduce heat transfer, and increase water pumps' operating costs. At the other end of the spectrum, overuse of biocides can waste expensive chemicals. Optimizing the quantity, frequency, and type of dosage can improve both the health of a cooling system and its plant's bottom line.

Integrated software platform eludes many owner/operators

Ongoing research into experience with plant- and fleet-level software reveals that these applications work side by side but do not necessarily function as an integrated “knowledge management” system. On the supplier side, the industry continues to be fragmented, with individual programs governing a narrow part of the overall plant.

This month in POWER . . .

September 1886 Four years after this magazine was launched, the editors reviewed the latest improvements to industrial boilers, beginning with the Backus furnace (Figure 1). 1. The Backus furnace. “This…

Departments

Commentary

It's time to rebalance America's electricity strategy

Not long ago, most utility investors considered California's electricity policies too iconoclastic to support. Driven by far-left environmentalists and overzealous regulators, those policies have made it nearly impossible to build…

New Products

Legal & Regulatory

Carbon-neutral status shouldn't be for sale

While elected officials in Washington debate the politics of climate change, state legislators and regulators have been busy putting in place programs to reduce greenhouse gas emissions. For the most…

Focus on O&M

Focus on O&M (September 2007)

Replace pumps, cut repair bills / New bolts show their stress level / Up a certain creek, without a filter / Hang up those cables and hoses

Global Monitor

Global Monitor (September 2007)

Constellation files partial COL / IAEA scrutinizes shaken Japanese nuke / Wave energy of the future? / New GE plant reigns in Spain / Solar house competition heats up / Oxygen-blown IGCC, at micro-scale / Turning corncobs into ethanol / Court blocks gas attack on coal project / New advanced energy initiatives / POWER digest

Speaking of Power

Nuclear plants: Something old, something new

The recent restart of Tennessee Valley Authority's (TVA's) Brown's Ferry Unit 1 following a five-year renovation brings to 104 the number of nuclear plants operating in the U.S. Their 100…

This month in POWER . . .

September 1886 Four years after this magazine was launched, the editors reviewed the latest improvements to industrial boilers, beginning with the Backus furnace (Figure 1). 1. The Backus furnace. “This…

GBR Reports