Brussels, 17/06/2011 (Agence Europe) - In its Summer Outlook Report 2011, the European Network of Transmission Systems Operators for electricity (ENTSO-E) plans to strike a balance between the generation and supply of electricity in the EU during the summer period, although member states - Finland, Hungary, Latvia and Poland - will have to rely on imports to meet their needs. In the event of sustained heat waves or high temperatures, reliability margins are reduced and challenging situations...