The International Energy Agency acts as energy policy advisor to 29 member countries plus the European Commission, in their effort to ensure reliable, affordable, and clean energy for their citizens. The IEA's initial role was to co-ordinate measures in times of oil supply emergencies. As energy markets have changed, so has the IEA. Current work focuses on climate change policies, market reform, energy technology collaboration and outreach to the rest of the world, especially major producers and consumers of energy like China, India, Russia and the OPEC countries.