Gas turbine Gigawatt-hour (GWh) GPRS (General Packet Radio Service) “Green certificate”
Gross efficient power (in MW) Gross generation GSM Independent System Operator (ISO) Industrial producer Interconnection IP (Internet Protocol) Kilowatt (kW) Kilowatt-hour (kWh)
MAN (Metropolitan Area Network) Market Operator
National Transmission Network Net efficient power (in MW) Net generation Network availability Non-eligible Customer Orimulsion Peak power Portal Power transformer Price cap Renewable sources Roaming
A communication network based mainly on optical fibers that covers the perimeter of a city.
The corporation that, after its formation by the Independent System Operator, will be entrusted with the economic management of the Electricity Exchange.
The network of transformer stations and high-voltage electric power lines covering Italy.
The maximum amount of electric power that can be continuously produced during a sufficiently long given period of operation, assuming that all the parts of the plant are functioning, as measured at the point of entry into the network; that is, net of the power absorbed by the plant itself and the power lost in the transformers required to raise the voltage to the network value.
Gross electricity production net of the electricity absorbed by auxiliary generation services and losses in main transformers.
The state in which the national transmission network is utilizable by the Independent System Operator for the activities of its concern.
A final customer who, pursuant to the Bersani Decree, does not qualify for the category of Eligible Customers and is thus entitled to enter into supply contracts exclusively with the distributor providing the service in the territorial area where the premises of the customer are located.
A fossil fuel from the basin of the Orinoco River in Venezuela, consisting of very fine bitumen dispersed in water.
The electric power demanded on the network at the time of maximum load.
A service organizing the contents and facilitating access to the information and service resources present on Internet. Portals are called “horizontal” when they include different kinds of classified contents and a complete range of services and “vertical” when they focus on a limited number of areas such as, for example: work, sports, finance or television.
A static machine that transforms a system of alternating current into another system generally with different voltage and current at the same frequency in order to transmit electric power.
A limit imposed by a regulatory body on the revenues of determined industry, which takes into account changes in the consumer price index and the efficiency gains expected of companies in the same industry.
Wind, sun, water resources, geothermal resources, tides, waves, biomass, and organic and inorganic waste.
Provision of service through the use of networks owned by other telecommunications companies.
A corporation formed by the Independent System Operator to endure the continuous, safe and efficient supply of electricity to Non-eligible Customers. It will become operational at the same time as the imminent inception of the Electricity Exchange.
A machine that converts the energy of steam generated in a boiler or of geothermal steam into the mechanical energy of a rotating shaft.
The costs defined by the Industry Minister in a decree on January 26, 2000, which derive from investments that mainly regard obligations assumed before February 19, 1997 and deriving from contractual commitments assumed before that date or that in any case were imposed on the company for reasons of public policy and/or are a direct consequence of the implementation in Italy of EC directive 96/92.
1,000,000,000 kilowatt-hours.
The ratio between the quantity of electricity produced and the quantity of energy from primary sources used to produce it.
The three conductors that constitute the three phases of an electric power line.
Ton of oil equivalent. A conventional unit, equivalent to 10 million kcal, that enables the quantity of any energy source to be expressed by comparing its energy potential with that of crude oil.
The transportation of electricity along interconnected high- and very-high-voltage networks from generating plants or, in the case of imported electricity, from the delivery point of the latter, to the distribution system.
A third-generation mobile communications system belonging to the IMT-2000 family and based on the standard established by the ETSI (European Telecommunications Standard Institute).
The unbundling of access at the local-network level, which allows telephone companies alternative to Telecom Italia to access the so-called “last mile” of the incumbent’s network; that is, the telephone lines that go from the telephone company’s exchange to customers’ homes, thus allowing the provision of telephone or data-transmission services directly to the final customer.
The basic unit of electric force.
Communications standard through which Internet services can be used directly on special cell phones and other portable wireless instruments.
The basic unit of active electric power.
Single Buyer
Steam turbine
Stranded costs
Terawatt-hour (TWh) Thermal efficiency of a thermal power station, or thermal efficiency Three-phase line TOE
Transmission
UMTS (Universal Mobile Telecommunications System)
Unbundling of the Local Loop
Volt
WAP (Wireless Application Protocol) Watt
Enel
Società per azioni Registered office in Rome 137, Viale Regina Margherita Capital Stock
Euro 6,063,075,189 fully paid-in
Tax I.D. and Companies’ Register of Rome no. 00811720580 R.E.A. of Rome no. 756032 VAT Code no. 00934061003
Copy editing
postScriptum di Paola Urbani - Rome Cover photo
Zefa - Rome Printed by Quintily - Rome
Printed in May 2003 on re-cycled Fedrigoni Freelife Cento paper
2,000 copies printed Publication not for sale
Disclaimer
The Annual Report 2002
issued in Italian has been translated into English solely for the convenience of international readers.