The Commission has published its final report on the energy sector competition inquiry, concluding that consumers and businesses are losing out because of inefficient and expensive gas and electricity markets. Particular problems include high levels of market concentration; vertical integration of supply, generation and infrastructure leading to a lack of equal access to, and insufficient investment in infrastructure; and, possible collusion between incumbent operators to share markets. To tackle these problems, the Commission will pursue follow up action in individual cases under the competition rules (anti-trust, merger control and State Aids) and act to improve the regulatory framework for energy liberalisation. The Commission has already conducted a number of inspections in companies where these particular issues warrant investigation.