James Maxwell and Charles Coulomb

June Birthdays

On June 14, 1736, Charles-Augustin de Coulomb was born in France.

The name might seem vaguely familiar. In an electrical engineering or physics class that you struggled to keep awake in, the prof defined the unit of electric charge.

The coulomb, or just C, is the unit of electric charge. It is the charge transported by a constant electrical current of one ampere in one second.

C comes into plays in capacitance, the storing of charge. C is also the amount of excess charge on a capacitor of one farad charged to a potential difference of one volt.

Vendor Neutral

(April 2012) MidAmerican Energy awarded a contract to Siemens Energy to supply wind turbines for its 407-MW project expansion. American Electric Power began operating the 580-MW Dresden natural gas-fired combined-cycle power plant. Duke Energy and ChinaHuaneng Group signed a three-year agreement expanding their research cooperation to include coal and carbon capture and sequestration technologies. And others...

Vendor Neutral

(January 2012) Hawaiian Electric selects Renewable Energy Group to supply biodiesel for combustion turbine; GE signs long-term services agreement with Comision Federal de la Electricidad; Nissan North America selects Coulomb Technologies to provide EV charging infrastructure locations; Siemens agrees to acquire eMeter; plus announcements and contracts involving AES Corp., Maui Electric, KCP&L, and others.

Vendor Neutral

(December 2011) Lafayette Utilities System selects Elster’s EnergyAxis as its AMI system; ABB wins contract from Hydro-Quebec; Sapphire Power Holdings acquires gas-fired power generation from Morris Energy Group; Consumers Energy awards contract to Babcock & Wilcox; plus announcements and contracts involving BP Wind Energy, Abengoa Solar, Samsung C&T and others.

Vendor Neutral

(October 2011) Wind Capital group selects RMT Inc. to design and construct wind energy facility; MEMC Electronic Materials, Inc. and SunEdison acquire Fotowatio Renewable Ventures; Solar Community and Reliant Energy team up to offer financing options; KEMA selects Green Energy Corp.’s software; Leviton unveils commercial electric vehicle charging stations; plus announcements and contracts involving Science Applications International Corp., Tantalus, FirstEnergy Nuclear Operating Co. and others.

Electric Avenue

Connecting vehicles to smart systems.

Electric vehicles (EV) are just getting started, with rapid growth ahead. Plug-in hybrids and other EVs could capture 20 percent of the U.S. auto market by 2030. When planning for future infrastructure and technology needs, utilities face difficult questions about how EVs will interact with the utility grid. A comprehensive approach to communicating and integrating vehicle information will allow utilities and drivers to make the most of smart electric transportation.

Vendor Neutral

Alstom introduces a new 3-MW wind turbine, one of the world’s most powerful for onshore installations; Solyndra reports its larges-ever rooftop installation of cylindrical photovoltaic (PV) systems — a 704-kW project in New Jersey; Plug Power reports that its GenDrive fuel cell units will power Walmart Canada’s fleet of electric lift trucks at a Alberta distribution center.