Technology

An increased reliance on renewable energy could threaten reliability of the nation’s electric transmission grids by reducing the rotational mass and rotational inertia of on-line turbine generators, thus, reducing the capability of generators to respond to drops in voltage frequency. In fact, data collected from 1994 to 2009 for the Eastern Interconnection already reveals a drop in the grid’s capability (as measured in megawatts) to stop a very rapid drop in frequency — such as a drop of a tenth of a cycle per second.

Kiewit chooses Alstom equipment for Dominion and Northland Power plants; Abengoa Solar reaches 143 MW with thermal plant startup; S&C Electric to engineer Tessera Solar project; Canada and Hitachi cooperate on carbon sequestration; Black & Veatch to manage PSE&G smart-grid project; AEP selects OPower for customer engagement; SRP picks Elster for AMI rollout; Oncor installs millionth smart meter; plus contract and technology announcements from ABB, Arcadian Networks, Beacon Power, Catalyst Renewables, eMeter, Itron, Open Systems International, Siemens, SunEdison, Tesla Motors and

America’s electric utilities understand their central role in taking efficiency and conservation to the next level. Accordingly, the industry has nearly doubled its spending on efficiency measures in the past few years. But encouraging customers to save energy won’t be enough to keep pace with the electricity demands of a growing digital economy. The country’s efficiency efforts will be most effective as part of a clean energy portfolio strategy.

The industry is getting more complex every day. Senior executives at Southern Company, PPL, TXU Energy, Direct Energy and PJM discuss business trends, resource strategies, electric vehicles and customer engagement in the smart-grid era.

Reports of the electric car’s death are greatly exaggerated. Technology, economics and politics are driving a new start for electric vehicles; already dozens of EV models are heading for U.S. showrooms. Electricity won’t replace gasoline overnight, but utilities are planning today for tomorrow’s transportation load.

Low carbon prices might not produce sufficient incentives for firms to innovate and reduce emissions in the long run. But relatively high carbon prices can be politically unacceptable and invite consumer backlash. Where’s the right balance? A PUC chairman offers an alternative approach to managing GHG emissions.

T&D and Smart Grid

The ZigBee Alliance and the Wi-Fi Alliance entered an agreement to collaborate on wireless home area networks (HAN) for smart-grid applications. The initial focus of the collaboration will be ZigBeeSmart Energy Profile 2.0, which is the next-generation energy management protocol for smart grid-enabled homes based on today’s successful ZigBeeSmart Energy Profile. The ZigBeeSmart Energy Profile 2.0 is expected to be extended to operate over Wi-Fi technology as a result of the collaboration.

Small modular reactors (SMRs) are nuclear generating units that are about the size of railroad cars and provide about one-tenth to one-fourth the power of full-size reactors. As a result, they cost a fraction of what full-size reactors cost. The reactors are designed to provide between 40 MW and 300 MW of electric power, compared with the 1,100 to 1,700 MW output of larger reactors. In addition, most are expected to cost under $1 billion, compared with the $5 billion to $10 billion price tags of the larger units.

Generation

Siemens Energy has been awarded an 18-month, $300,000 R&D program by the Illinois Clean Coal Institute to study the effects of coal and coal-derived syngas combustion on the behavior of material and coating degradation in utility boiler and gas turbine environments. Focus areas of the research program will explore materials degradation modes in integrated gasification combined-cycle (IGCC) systems and utility boilers.