They are used in power plants to operate generators which make electricity.

Today, when utilities do operate internal-combustion generators they typically use oil-powered diesels.

Jefimenko has constructed and operated electrostatic generators run by atmospheric electricity.

The American has been plucked from retirement, brought to Britain and made chief executive of British Energy, the company operating the country's eight nuclear power generators.

Thus, the need for special frequency power for urban traction has disappeared, along with the financial motivation for utilities to operate generators at these frequencies.

Supplies of fuel needed to operate electrical generators have dropped sharply in the current round of fighting that began March 14.

They run their own bus services to ferry employees and operate generators to meet their energy requirements.

Bhutan operates four major hydroelectric facilities, several small and mini hydroelectric generators, and a handful of further sites in development.

The local farmers devised their own sources of power, using water or gas operated generators.

Sometimes they are also transmission substations or collector substations if the railway network also operates its own grid and generators.