Electric vehicles (EV) are by many seen as an integral part of the transformation to a green economy, and are thus expected to increase in number. The charging of EVs is a new challenge to distribution networks and the possible impact of EV charging has recently come to the attention of network companies. This paper presents high resolution measurements of the network impact from EVs during slow and fast charging and some conclusions based on what the measurements indicates.

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Power quality measurement integrated in energy meters are presented as a potential benefit by some manufacturers. The Norwegian regulator has considered making minimum requirements for energy meters to include registration of interruptions. SINTEF Energy Research has performed tests on energy meters with power quality measurement capabilities. These tests include the ability to detect interruptions, supply voltage variations, voltage dips, among others. Results presented in this paper show large differences in capabilities for power quality measurement of 'smart' energy meters. The results also show that the power quality measurements are not according to international standards for such measurements like EN50160 [1], IEC 61000-4-30 [2] and others.

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This paper describes results from three ongoing Smart Grid pilot projects within the Norwegian Smart Grid Centre. The paper provides and experiences from the first phases of the pilot projects, including Smart Meter roll-out, verification of different communication technologies and challenges regarding ICT security.