Glossary

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Alternating current: An electric current that reverses direction at regular intervals. Power producers distribute alternating current.

Direct current: An electric current flowing in one direction only. Photovoltaic solar panels generate direct current.

Efficiency: The percentage of energy input an energy system puts out as useful energy. All energy systems suffer losses during operation.

Electrical voltage: The difference in potential between two points of an electrical device or circuit. Voltage is measured in volts.

Energy Revolution: Today, energy has become scarce, expensive and is undergoing a technology revolution: clean generation, nuclear power, renewable energies, deregulation, interconnection between countries and necessity for efficiency at every stage. In the same time, we have to combine economic growth and growing demand on energy with reduction of CO2 emission. To meet these challenges, we need to accelerate our move from an Old Jurassic Grid to the Smart Grid…