GENERATION PARK. Set of production installations of an electricity company.

GENERATOR. Electrical generators are machines whose role is to transform mechanical energy to electrical energy.

GEOTHERMAL. See GEOTHERMAL ENERGY.

GEOTHERMAL ENERGY. Energy which can be obtained by man through the use of heat from inside the Earth.

GIGAWATT. One thousand Megawatts (MW) and one billion watts.

GLASS. A solid material made of disordered particles, glass can be natural or artificial.

“GREEN” CERTIFICATES. A “green” certificate guarantees that a Megawatt of energy produced has a renewable source as its origin.

GROSS MARGIN. Difference between revenues and direct production costs, without including amortisations, commercial structural costs or financial costs.