This volume includes chapters on 'Newcomers in the Electricity Market: Aggregators and Storage', 'Hydropower Concessions in the EU: A Need for Liberalisation or Privatisation?', 'Investments and des-Investments in the Energy Sector', 'Offshore Decommissioning in the North Sea', 'CCS as a Climate Tool: North Sea Practice' and 'From EU Climate Goals to National Climate Laws'.