Steel mills have long recaptured flue gas from the blast furnace to generate local power and steam. But advances in gas turbine technology have taken what was a low-tech means of increasing plant efficiency and given mill owners ways to increase profits through selling electricity and greatly reducing emissions through more efficient combustion.

Surging supply and plummeting prices during 2011 have worked a sea change in America’s energy policies and use of natural gas. How long can it go on?

Timing is (almost) everything when it comes to building new power plants. Nobody knows that better than AEP, which finally got a happy ending to a story that took over a decade to complete.

The 2000s saw dramatic growth in gas-fired power generation capacity. But, surprise–this growth was also accompanied by the retirements of numerous older gas-fired plants.

The rapid growth of gas extraction by hydraulic fracturing has drawn increasing allegations of property damage and health risks. In many cases, these allegations are being followed by a wave of lawsuits.

Whatever your role in gas-fired power, there’s one constant these days: You probably aren’t bored.

Gas extraction by hydraulic fracturing is not new, but the controversy over it is. While the process carries some notable risks, the potential and promise of fracking argue in favor of responsible development and regulation, not an outright ban.

Hydraulic fracturing has been growing in popularity as a means of extracting natural gas for several years. It was in 2011 that media and public attention began to focus on its possibilities and risks, bringing with it controversy and increasing concern.

Publication of the Environmental Protection Agency’s (EPA’s) final Mercury and Air Toxics Standards (MATS) in Thursday’s Federal Register means that the three-year compliance period mandated under the Clean Air Act will begin in 60 days, on April 16, 2012. Thursday’s publication also kicked up a storm of reactions and prompted several legal challenges.

A legal challenge to the Obama administration’s decision not to issue proposed ozone standards last fall was dismissed on Friday after a three-judge panel with the U.S. Circuit Court of Appeals for the District of Columbia held that it did not have jurisdiction to review the action.

Eleven U.S. nuclear plants received a Request for Information (RFI) from the Nuclear Regulatory Commission (NRC) on Friday asking for analyses of the effects of “thermal conductivity degradation” for nuclear fuel developed by Westinghouse under certain postulated accident conditions.

UK power company Drax has canceled a 290-MW biomass power plant proposed for construction in North Yorkshire, citing high costs for transporting fuel to the £1.4 billion ($2.19 billion) inland plant and a lack of financial and regulatory support from the UK government.

The UK and France on Friday signed a landmark agreement to strengthen cooperation on civil nuclear energy between the two countries, reaffirming their enthusiasm for nuclear power. The agreement, made nearly a year after the Fukushima accident in Japan, seeks to help the countries achieve energy security within the European Union’s low-carbon energy policy framework.

Vermont’s attorney general on Saturday appealed a federal district court’s January decision that invalidated two Vermont statutes and ruled that Entergy could operate the Vermont Yankee nuclear plant beyond a state-mandated shutdown deadline of March 21, 2012.

Spain’s oldest nuclear reactor, Santa María de Garoña, can continue to operate safely until 2019, the country’s nuclear regulator the Consejo de Seguridad Nuclear (CSN) told the government last week. The report follows a decision last month by Spain’s recently elected conservative government to overturn a decree that would have forced the plant to close by April 2013.

In a speech today to hundreds of Southern Co. employees at that company’s Plant Vogtle in Waynesboro, Ga.—the site of the first new reactors approved in the U.S. since 1978—Energy Secretary Steven Chu said federal agencies were preparing to strengthen U.S. competitiveness in the global nuclear sector by earmarking $770 million in the Fiscal Year 2013 budget.

American Electric Power (AEP) may continue operating Big Sandy Unit 2, an 800-MW coal-fired power plant in Kentucky, if state regulators approve a 31% rate increase to help pay for pollution controls. The measure would trim the company’s planned coal retirements to 5,138 MW, not 5,909 MW, as the company had announced last June.

About 93% of total coal consumed in the U.S. in 2011 was used in the electric power sector, but electric sector coal consumption dropped by an estimated 40 million short tons—or 4% compared to 2010—as generators turned to cheaper natural gas instead, the Energy Information Agency (EIA) says.

A White House–commissioned independent review of the Department of Energy’s (DOE’s) loan portfolio concludes that the DOE could better manage its loan program and ongoing monitoring of its loan portfolio, but that the loan portfolio as a whole is expected to perform well and holds less risk than envisioned by Congress when it created and funded that program.

Eleven states filed a lawsuit in federal court on Friday to induce the Environmental Protection Agency (EPA) to promptly revise national air quality standards for fine particulate matter (PM 2.5, also known as soot) and adopt them by a certain date.

New Mexico’s Environmental Improvement Board (EIB) last week unanimously repealed a statewide cap-and-trade program adopted in 2010, when Democratic Governor Bill Richardson was in office. Current Republican Gov. Susana Martinez has been fiercely opposed to the measure.

Commissioners at the Nuclear Regulatory Commission (NRC) on Thursday voted 4–1 to direct staff to prepare a construction and operation license (COL) for Southern Co.’s two AP1000 reactors at Plant Vogtle, south of Augusta, which could become operational between 2016 and 2017. NRC Chair Gregory Jaczko, who cast the lone vote against the COL, cited the need for safety enhancements recommended as a result of the Fukushima accident last March for reasons of his dissent.

By Kennedy Maize Washington, D.C., February 13, 2012 — Environmental activists have a long record of miscalculation and misadventure. That’s been particularly true when it comes to coal. Remember acid rain? No such thing, according to a decade-long government scientific inquiry (which can’t ever quite turn itself off). Global warming? A global yawn, Al Gore […]

Just two weeks after FirstEnergy Corp. said it would close more than 2 GW of six older coal-fired power plants Ohio, Pennsylvania, and Maryland by September, the Akron, Ohio–based company today said it would retire three more plants in West Virginia. The company cited “high costs” to implement the Environmental Protection Agency’s (EPA’s) recently finalized Mercury and Air Toxics Standards (MATS).

The two-unit San Onofre nuclear power plant in the northwest corner of San Diego County, Calif., remained shut down today, more than a week after a leak from a tube in one unit released a small amount of radiation. On Thursday, regulatory officials found extensive wear on tubes in the second unit, which is offline for maintenance. Also this week, reports confirmed that a worker had fallen into and climbed out of a reactor pool at the facility.

New Hampshire’s Legislature is considering a bill that could require Public Service of New Hampshire (PSNH)—the state’s largest electric utility—to divest all 12 of its generation facilities by 2013 to complete restructuring of its electric sector. At a hearing on Thursday, PSNH staunchly opposed the measure, saying the bill could have “far-reaching economic risks, and reliability consequences for all New Hampshire business and residential customers.”

As the U.S. Nuclear Regulatory Commission (NRC) prepares to vote on Thursday on whether to approve a combined construction and operating license (COL) for Southern Co.’s proposed 2,234-MW expansion of its Vogtle nuclear plant, anti-nuclear activists are gearing up to oppose the decision. Meanwhile, Progress Energy is reportedly considering shelving its proposed Levy County, Fla., reactor.

A settlement reached between Dominion and conservation groups that was last week approved by a federal court makes the utility’s plans to shutter all four units at its 60-year-old Salem Harbor Station in Salem, Mass., by 2014 legally enforceable.

Renewable power prices in California surged from 5.4 cents/kWh in 2003 to 13.3 cents/kWh in 2011. However, they are slated to fall as new contract bids submitted to utilities last year were estimated at about 30% lower than in 2009, a new report from the California Public Utilities Commission (CPUC) suggests.

More renewable power capacity was installed than ever before in the European Union (EU) during 2011, the European Wind Energy Association (EWEA) says in a new report published on Monday. The EU saw a 3.9% increase in power capacity compared with 2010, much of which was driven by renewable power capacity increases. In 2011, the EU added 37.7% more renewable power capacity than in 2010.