POWER

Located on the scenic Japanese coastline, Tohoku Electric Power Co., Inc.’s new 446-MW Sendai Thermal Power Station Unit 4 is a combined-cycle plant that replaces three 175-MW coal-fired units that had been in operation for more than 50 years. The new plant features the first application of MHI’s 50-Hz M701F4 gas turbine, which provides a thermal efficiency boost from the old plant’s 43% to more than 58%. This change substantially reduces CO2 emissions.

One of the main criticisms of renewable energy facilities is that they are unable to dispatch electricity when it’s needed. The great game-changer is low-cost energy storage, which would enable renewable energy production to be stored and rapidly released when needed. Here are seven promising distributed energy storage technologies that could be commercialized in the near future.

I recently outlined the top four regulatory obstacles facing existing U.S. coal-fired power plants in the coming years. That list, although not comprehensive, covered issues that owners of coal plants should be concerned about in the near term. However, in the long term, there is one regulatory development that dwarfs all others.

As early as the first century A.D., wind energy was harnessed for practical purposes. Since then, turbine designs have come a long way from the archetypal post-mounted four-bladed devices. Today’s ubiquitous three-bladed designs will soon be evolving in many unexpected directions.

Australian prime minister Julia Gillard invited Jill Duggan, of the European Commission Directorate General of Climate Action and the UK government’s head of international emissions trading, to help bolster Gillard’s push for support of a carbon tax early in March. However, when interviewed on a morning show, Duggan was unable to estimate either the cost or the benefits of the UK’s program. In fact, the interview was a complete disaster.

Electricity grids are slowly getting smarter. Simultaneously, the use of distributed generation is increasing. Though smart grid advocates tout the ability of a smarter grid to enable greater deployment of distributed resources, the benefits could flow in both directions.

One of the largest returns on investment a plant can achieve is the improved condenser performance that results from an effective condenser tube cleaning. Perhaps it is time to reevaluate your choice of cleaning technologies, establish an optimal cleaning schedule, and add routine air and water in-leakage surveys to your plant’s maintenance schedule.

Biomass cofiring has the potential to cut emissions from coal-fueled generation without substantially increasing costs or infrastructure investments. Research shows that when implemented at relatively low biomass-to-coal ratios, energy consumption, solid waste generation, and emissions are all reduced. However, mixing biomass and coal does create some challenges that must be addressed.

Because refractory is out of sight inside the gas flow path of a steam generator and its auxiliaries, it’s also often out of mind. That is, until the refractory fails and causes a forced outage.

Fire protection systems for air-cooled hydroelectric generators have several special requirements due to these generators’ unique geometries. This survey of options will help plant owners and operators make the best equipment selections for their plants and thereby avoid unexpected surprises.

Efficient boiler operation requires boiler auxiliary equipment to operate in harmony. In this third and last installment of our Power 101 series, we examine ways to decrease the auxiliary power requirements of boiler auxiliaries.

Two years ago, Spain’s fixation on renewables and “green jobs” was praised by President Obama as a success story worthy of our emulation. How is Spain doing today?

Excitement over an expected nuclear renaissance reached fever pitch over the past decade. Today, the original volume of announced projects has been sifted, leaving just a few serious ones that may match well with the level of loan guarantees recently announced as part of the president’s budget proposal. The pace of progress is slow, yet progress is almost certainly unavoidable.

In an anti-climactic markup that featured little new debate and no amendments by opposing Democrats, the House Energy and Power Subcommittee approved Republican legislation to block Obama administration action on climate change by stripping the Environmental Protection Agency of its Clean Air Act authority to regulate carbon dioxide and other greenhouse gases.

Rules proposed by the Environmental Protection Agency (EPA) under Section 316(b) of the Clean Water Act on Monday call for flexible technology standards, determined on a case-by-case basis, for more than 670 power plants across the nation that pull in at least 2 million gallons per day of cooling water. The EPA said the proposal, which seeks to protect aquatic life, establishes a “common sense framework, putting a premium on public input and flexibility.”

The Senate is expected to vote on Thursday on an amendment introduced by Senate Republican Leader Mitch McConnell (R-Ky.) to small business legislation that could permanently block the Environmental Protection Agency (EPA) from promulgating climate change rules.

Nearly 20 Senate Democrats asked President Obama in a letter today not to agree to spending plans passed by the GOP-controlled House last month that would block funding for the Environmental Protection Agency’s (EPA’s) implementation of greenhouse gas rules.

As chief executives of 34 renewable energy companies urged congressional Republican and Democratic leaders to support the Department of Energy’s loan guarantee program, a study released by the Bipartisan Policy Center (BPC) suggests grants are a simpler and more effective way to help finance projects than tax credits.

With geothermal power being produced in nine states—and with 123 projects across 15 states under development—the U.S. leads the world in geothermal energy production, a new report from the Geothermal Energy Association (GEA) shows.

The Department of the Interior (DOI) and the Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE) on Thursday said they had begun a process to offer Bluewater Wind Delaware the first commercial wind lease off the coast of Delaware under the “Smart from the Start” Atlantic Offshore Wind program.

California’s Assembly on Tuesday passed a renewable energy mandate that would require the state’s power companies to generate 33%—up from the current 20%—of their power from renewable sources by 2020. The mandate is the most ambitious in the U.S.

The Nuclear Regulatory Commission (NRC) last week completed a Final Supplemental Environmental Impact Statement (FSEIS) for a limited work authorization (LWA) and the combined construction and operating licenses (COLs) for Southern Co.’s Vogtle Units 3 and 4 proposed for construction near Waynesboro, Ga.

Incidents unfolding at the quake-stricken Fukushima Daiichi reactors in Japan has led governments to take extraordinary safety measures around the world. Last week, European Union (EU) ministers agreed to re-check the safety of Europe’s 143 reactors, and in the U.S., regulators are expected to conduct seismic assessments on 27 reactors at 17 plants.

Sept. 30, 2011, is the revised final deadline for reporting 2010 data under the Environmental Protection Agency’s (EPA’s) Greenhouse Gas (GHG) Reporting Program. The agency also last week delayed the release of proposed rules that would govern cooling water intake systems at nuclear and coal plants until March 28.

A week after a U.S. House committee passed a bill sponsored by Rep. Fred Upton (R-Mich.) in the House and Sen. James Inhofe (R-Okla.) in the Senate, Sens. Inhofe and Sen. Mike Johanns (R-Neb.) introduced a bill that would require an interagency federal panel to undertake a “cumulative economic analysis” of Environmental Protection Agency (EPA) regulations.

Interior Secretary Ken Salazar on Tuesday said the Bureau of Land Management (BLM) would hold four competitive lease sales from May through August for Powder River Basin coal tracts in Wyoming. The tracts, covering 7,441.25 acres, hold an estimated 758 million tons of low-sulfur coal.

AC power is now available at Units 1, 2, and 4 of the six-reactor quake- and tsunami-hit Fukushima Daiichi nuclear plant in Japan, according to recent updates; however, the International Atomic Energy Agency (IAEA) still believes “the overall situation remains of serious concern.”

Georgia Power last week said it would seek the Georgia Public Service Commission’s approval to decertify two coal-generating units totaling 569 MW. The decision was based on “a need to install environmental controls to meet a variety of existing and expected environmental regulations,” the company said.

Sempra Generation last week officially dedicated the 48-MW Copper Mountain Solar facility, a project located adjacent to the company’s 10-MW El Dorado Solar installation in Boulder City, Nev., about 40 miles southeast of Las Vegas. Sempra is calling the facility “the largest photovoltaic solar plant in the U.S.”

A federal judge in Birmingham, Ala., on Monday dismissed all claims in an Environmental Protection Agency (EPA) lawsuit that alleged Southern Co. subsidiary Alabama Power built or made modifications to existing coal-fired power plants in Alabama that were in violation of New Source Review (NSR) regulations under Prevention of Significant Deterioration provisions of the Clean Air Act.