Plant Design

Is waste-to-energy the best greenhouse gas fighter among electric generating technologies? Or do trash burners spew dangerous air emissions? The answer may be a surprise. What electricity-generating technology results in net greenhouse gas (GHG) reductions, not just zero new emissions? According to the U.S. Environmental Protection Agency (EPA), it’s not nuclear, not wind, not solar. […]

Although it’s not widely publicized, a majority of the energy used to generate electricity is wasted in the form of heat discharged to the environment. For better or worse, that’s just the way a typical thermal power plant works. Fuel, such as coal, biomass, natural gas, or uranium (in the case of nuclear plants), is […]

The nuclear industry has been expecting big things from small modular reactors (SMRs) for a long time, but to date, no SMRs have reached commercial construction phase. That may change soon. Utah Associated Municipal Power Systems has a plan to deploy NuScale Power’s Integral Pressurized Water Reactor at a site in Idaho. Will others follow […]

Power generators have always had to make afetyome changes as each new generation enters the sector, but today’s new workers are bringing with them attitudes and skills that challenge traditional plant management, for good and ill. Here’s what some companies and plants are doing to make the best use of younger workers while getting them […]

An industry rooted in tradition is facing unprecedented changes and challenges, and meeting them requires “thinking big” and embracing disruptive technologies that will change how we think about electricity generation and delivery. That was the message from the keynote session at ELECTRIC POWER 2016.  Two senior power sector executives opened the 2016 ELECTRIC POWER Conference […]

The Department of Energy (DOE) is ready to end its involvement with the Texas Clean Energy Project (TCEP), a carbon capture, utilization, and storage (CCUS) facility under development in west Texas, a move that would effectively shut the project down, according to its backers. Along with FutureGen, Hydrogen Energy California (HECA), and NRG’s Petra Nova […]

Fuel cells powered by natural gas, biogas, and hydrogen are a rapidly expanding option for distributed generation, with fuel cell­­–based power plants being deployed in capacities into tens of megawatts. But as the technology improves and costs begin to scale, opportunities for other applications are being explored. One such application may even go beyond power […]

The U.S. Securities and Exchange Commission (SEC) is conducting a formal investigation concerning costs and delays plaguing Mississippi Power’s Kemper integrated gasification combined cycle (IGCC) plant. Southern Co., Mississippi Power’s parent company, revealed the investigation in a recent 10-Q financial filing. The company said that while it is fully cooperating with the SEC, it believes the […]

A new tool that can be used to help ensure the proper positioning of core shroud head bolt assemblies in boiling water reactors (BWRs) was recently invented by Jason Cocke, engineering, tooling, and logistics

A small modular reactor (SMR) system that uses a supercritical carbon dioxide (CO2) Brayton cycle instead of the steam Rankine cycle is under development at the Korea Advanced Institute of Science and

When management decided to purchase and install a new, vented lead-acid battery system at the Dogwood power plant, decision-makers also investigated the benefits of adding a continuous battery-monitoring

Keeping a power plant’s surface condenser in proper working order requires paying attention to balance-of-plant systems as well. Failure to monitor and maintain cooling towers and vacuum pumps in particular can lead to performance penalties or worse. The surface condenser at a power plant has a significant effect on power generation—specifically, the efficiency with which […]

Two senior power sector executives opened the 2016 ELECTRIC POWER Conference and Exhibition in New Orleans April 19 with a message that generators need to “think big” and embrace possibilities of disruptive technologies—or risk being run over on the road to the future. Leo Denault, chairman and CEO of Entergy Corp., delivered the opening keynote […]

In April’s editorial, “When Technology Tails Wag Power Dogs,” Editor Gail Reitenbach mused about whether the use of captured carbon dioxide (CO2) for enhanced oil recovery (EOR) represents a viable way forward for carbon capture, use, and sequestration (CCUS). This is a subject both of us have covered in various ways over the past few […]

In what has become a regular occurrence with the Kemper County integrated gasification combined cycle power plant, Mississippi Power announced in a filing with the Securities and Exchange Commission on April 1 that costs have risen from the most recent projections and further delays in its in-service date are possible. Though the $18 million in […]

Although other renewable sources of energy may be growing at a faster rate, more electricity continues to be generated in the U.S. by conventional hydropower than by wind, solar, and geothermal power combined

Geothermal technology, though over a century old, is constantly changing. Developments in mapping techniques have improved exploratory practices. Plant adaptations, such as hybrid technologies and the

Entergy Tests Fiber Optic Cables to Slash Copper Use A unique pilot under way at a substation in New Orleans, La., uses fiber optic cables in a way that could help utilities reduce the use of copper wire. But

Why would one want to validate a turbine design? The answer is that actual operation of new and more advanced gas turbines can reveal issues that are very difficult to predict on the drawing board. As a

A great level of risk is present when operating pressurized systems. Over the years, industry safety concerns have increased with the occurence of catastrophic events. To help prevent further loss and damages

In 2000, the world had installed just 1 GW of solar photovoltaic (PV) capacity (in DC terms—see the sidebar, “AC or DC?”), a number that had surged to 39 GW by 2010 and 176 GW in 2014. Fueled by

Although new microgrid configurations, technologies, and business models are still evolving in the U.S., some lessons have been learned in the past few years. Aside from the fact that financing nontraditional/non-campus microgrids is hard, if there’s one overarching lesson, it’s that a microgrid designed to provide only one benefit or rely on only one generation source is unlikely to succeed.

Utility-scale solar photovoltaic (PV) generation has exploded over the past few years. From nearly nothing in the late 2000s, the U.S. now has more than 10 GW of utility-scale solar PV in operation according to the Energy Information Administration. That figure should continue to grow strongly because of the recent extension of the investment tax […]

In a growing number of regions, power plants are competing with many other users for scarce freshwater supplies, and the situation is likely to get worse. The International Energy Agency (IEA) recently

Steam turbines have to be warmed slowly to avoid excessive differential expansion of the various components, rotor stress, and potentially reduced service life. For that reason, startup times must be extended

At the ballyhooed Paris climate conference last December, a little-noticed event occurred that could lead to important developments for electric generators. At the Paris meeting, some 80

In late 2015, the U.S. Environmental Protection Agency (EPA) published new regulations governing wastewater discharge from steam electric power plants. These new regulations, or effluent limitation guidelines

Many combined cycle and cogeneration plants with heat recovery steam generators (HRSGs) were originally intended as baseload power sources or steam producers. In recent years, however, some have been

Mississippi Power’s lignite-fired Kemper County integrated gasification combined cycle (IGCC) power plant is seeing yet another delay and $110 million in new costs, a filing with state regulators shows. The company’s December 2015 monthly status report for the nation’s first commercial power plant that will capture and store carbon dioxide anticipates that it will now […]

In a leap for fast neutron power technology, Russia’s Rosatom has connected Unit 4 of its Beloyarsk nuclear plant in the Urals region to the grid. The 880-MW BN-800 unit–the latest generation of fast reactors