The Tettex 2293 from Swiss firm Haefely Test AG is the result of extensive research and years of experience testing transformers. A simple one-time-connection system, together with the simultaneous winding magnetization method (SWM), drastically reduces measuring time. The SWM guarantees fast and reliable measurements even on large power transformers with delta windings on the low-voltage […]

This installment of the series continues our review of different conditioning-monitoring techniques commonly in use at power plants using any generation technology. In the May issue we began exploring specific PdM techniques with an examination of electrical surge comparison and motor-current signature analysis.

Eclipse Inc. introduced the TJSR v5 self-recuperative burner for direct-fired furnace heating applications. The advanced burner design combines a high-velocity flame with fuel-saving recuperation. A space-saving integral eductor pulls the furnace exhaust through an internal ceramic recuperator. The recuperator preheats the incoming combustion air to very high levels, which improves furnace operating efficiency to reduce […]

It may seem counterintuitive, but the strategic coupling of simple- and combined- cycle technologies with renewable generation could establish the conditions necessary for adding more renewable megawatts to transmission grids around the world.

Massachusetts-based Cabot Corp. recently introduced Enova, an aerogel that is a new high-performance thermal additive designed specifically for insulation coatings. Enova aerogel is designed for application to surfaces that are not already insulated but ideally should be. Cabot researchers have found that applying a 1-millimeter coating containing Enova aerogel to a 200C metal surface meets […]

Underground coal gasification (UCG) is the gasification of coal in-situ, which involves drilling boreholes into the coal and injecting water/air or water/oxygen mixtures. It combines an extraction process and a conversion process into one step, producing a high-quality, affordable synthetic gas, which can be used for power generation. Still in the early stage of commercialization, UCG is poised to become a future major contributor to the energy mix in countries around the world.

Distributed wind generator supplier Southwest Windpower unveiled a small wind turbine for commercial and residential use, the Skystream 600, which it claims is the “most efficient power grid-connected turbine in its class, providing an average of 7,400 kWh of clean, low-cost energy per year per household in 12 mph average annual wind speeds.” The company […]

When President Obama unveiled his “clean energy standard” in the 2011 State of the Union address in February, and again when he spoke of his administration’s energy policy in late March, one form of electrical energy was conspicuous by its absence: hydropower. Hydro is the forgotten form, the politically incorrect renewable, the invisible generation. To borrow the complaint of comedian and Caddyshack movie star Rodney Dangerfield, hydro projects “don’t get no respect.”

Encorp LLC announced the launch of its Microgrid System Controller, which it says is the industry’s first microgrid system controller to connect onsite synchronous generators with renewable energy assets—such as photovoltaic systems, wind, and microturbines—and then monitor and control the resulting microgrid. The controller has already been successfully installed at a major international defense contractor […]

Is the term "energy independence" merely an oxymoron, or is it a national imperative? Opinions differ. Either way, the goal is practically impossible to achieve.

U.S. Energy Secretary Steven Chu announced on Tuesday that six projects in four states (California, Colorado, Florida, and New York) have been selected to receive nearly $7.5 million over two years to advance next-generation designs for wind turbine drivetrains.

Last Thursday, U.S. Energy Secretary Steven Chu announced that eight projects in five states (California, Connecticut, Louisiana, Texas, and Utah) have been selected to receive up to $11.3 million to support the research and development of pioneering geothermal technologies.

Flooding that threatens two Midwest nuclear power plants and fire that reached the edge of the top U.S. nuclear weapons laboratory put U.S. nuclear safety in the news this week. Government officials responded with assurances that all facilities had adequately safeguards in place to ride out natural disasters.

Progress Energy Florida provided an update to the Nuclear Regulatory Commission (NRC) and the Florida Public Service Commission (FPSC) on Monday regarding the status of its Crystal River Nuclear Plant. Based on an initial review, the company believes that repairing the unit is the best option, and it is taking steps to complete more detailed engineering and construction analyses. The company estimates that the unit will return to service in 2014.

On Monday, federal regulators renewed the operating licenses for Xcel Energy Inc.’s Prairie Island Nuclear Generating Plant, Units 1 and 2, which will allow the plant to run for 20 more years. Four days earlier, Xcel shut down its other nuclear plant in Minnesota to repair a valve.

Dominion Virginia Power on Monday asked the Virginia State Corporation Commission for approval to convert three Virginia coal-burning power plants to biomass, saying the proposal had "strong customer benefits" and fit well with the company’s commitment to produce 15% of its power from renewable sources by 2025.

A U.S. District Court jury on Tuesday acquitted Xcel Energy and its subsidiary Public Service Co. of Colorado of criminal charges on five counts stemming from an October 2007 fire at the utility’s Cabin Creek hydropower plant near Georgetown, Colo., that killed five workers.

California’s First District Court of Appeal on Friday ruled that the state Air Resources Board (CARB) can proceed with implementation of a carbon cap-and-trade system. The ruling grants the state regulator a temporary stay on an order, pending the court’s decision, to halt work on the program that was issued by a San Francisco Superior Court judge on May 20.

U.S. Supreme Court justices on Monday unanimously decided that the Clean Air Act (CAA) and other efforts by the Environmental Protection Agency (EPA) to regulate greenhouse gas (GHGs)  “displace” any federal common-law right to “seek abatement of carbon dioxide emissions” from fossil fuel–fired power plants—including claims that GHG emissions constitute a “public nuisance.”

The Government Accountability Office (GAO) says in a new report that while all U.S. nuclear plant sites have had some groundwater contamination from radioactive leaks,  there was no discernable impact on the public’s health from radioactive leaks at three nuclear plants it investigated. It concludes, however, that the Nuclear Regulatory Commission (NRC) could better identify and characterize the leaks if it required transparent monitoring data from licensees.

The U.S. Supreme Court on Monday said it would hear an appeal from PPL Montana of a March 2010 Montana Supreme Court decision that would have forced the power company to pay accrued rent and interest worth some $56 million to the state of Montana for the use of riverbeds beneath the company’s hydroelectric plants—some which have been generating power for more than a century.

The EPA on Tuesday extended by 30 days the timeline for public input on the proposed mercury and air toxics standards, though it stressed that the extension would not alter the timeline for issuing the final standards in November 2011. The public comment period for the so-called Toxic Air rule will now end on August 4, 2011.

A bipartisan group of lawmakers on the House Energy and Commerce Committee today introduced legislation that directs the Environmental Protection Agency (EPA) to develop “achievable standards” for industrial boilers and incinerators and grants more time for the development of and compliance with those rules.

San Antonio’s CPS Energy on Monday announced it would mothball by 2018—15 years earlier than planned—its 871-MW coal-fired J.T. Deely Power Plant—instead of spending an estimated $3 billion on pollution controls to comply with anticipated environmental regulations. The nation’s largest municipal utility expects to replace the plant’s generation through conservation and future renewable sources.

The Department of Energy (DOE) doled out several loan guarantee offers worth a combined $919 million in the past week. Recipients of the conditional commitments include Mesquite Solar 1 for the development of a 150-MW photovoltaic (PV) solar project in Arizona; Calisolar Inc. to help commercialize its silicon solar manufacturing process; 1366 Technologies to develop a multicrystalline wafer-manufacturing project, and Granite Reliable Power for a 99-MW wind project.

The U.S. installed 252 MW of grid-connected photovoltaic (PV) solar projects in the first four months of this year—66% more than the first quarter of 2010, the Solar Energy Industries Association (SEIA) says in a newly released report. The industry group also says that cumulatively, grid-connected solar electric installations in the U.S. have reached more than 2.85 GW—2.3 GW of which is grid-connected PV.

By Kennedy Maize   Washington, D.C., June 16, 2011 — The Obama administration’s latest genuflection toward the smart grid, announced with considerable fanfare and a dog-and-pony show put on the by White House’s science office this week, was an empty spectacle. It featured a cast of stars: science advisor John Holdren, energy secretary Steve Chu, […]

The Department of Energy in the past week made three more conditional loan guarantee offers: $2 billion to support two concentrating solar power (CSP) projects in California—the Mojave Solar Project in San Bernardino County and the Genesis Solar Project in Riverside County—and a $350 million partial loan guarantee for an Ormat-owned Nevada geothermal project.

Through a combination of actions that encourage the development of untapped geothermal resources and new technologies, geothermal energy could account for around 3.5% of annual global electricity production by 2050 (a considerable increase from current levels of 0.3%) the International Energy Agency (IEA) says in a report released on Tuesday.

American Electric Power (AEP) plans to retire nearly 6 GW of coal-fired capacity and upgrade or refuel another 11 GW as part of an estimated $8 billion plan to comply with a series of regulations proposed by the U.S. Environmental Protection Agency (EPA). About 25 GW of AEP’s 38-GW capacity is coal-fired—making it the biggest […]