While governments gather to negotiate a legally binding protocol to reduce greenhouse gas (GHG) emissions under the United Nations Framework Convention on Climate Change (UNFCCC), industries start congregating to think collectively about what voluntary actions they need to take in order to fulfill their respective roles in assisting governments to achieve agreed GHG reductions. Reducing GHG emissions will need the partnership of governments and stakeholders and the integration of innovative and cost-effective policies and strategies. Voluntary programmes are also part of this mixture of measures to be taken. They have proven to reduce costs and to enhance productivity, while simultaneously reducing GHG emissions and assisting in meeting other environmental, economic and social goals. Examples of such programmes are presented in this report. It contains 10 case studies on voluntary programmes and 10 case studies on opportunities for industries, coming from both developed and developing countries. The report aims to help governments and industries to identify opportunities for voluntary programmes and to design, structure and monitor such voluntary initiatives.