Participation is open to business and private sector organizations that wish to register for this event. The organizers reserve the right to approve the participation of all applicants. In general, every effort will be made to ensure good representation of both buyers and sellers. Arrangements are being made to ensure that important developing country and transition economies are represented as sellers. In addition, the Trade Fair should be of special interest to:

- Companies subject to EU Emissions Trading Scheme (ETS)
- Project Developers
- Government Experts from Developed and Developing
   Countries
- Carbon Buyers
- Technology Providers
- Verifiers/Certifiers and Validators
- Financial Intermediaries (banks, insurance companies)
- Brokers and Traders interested to discuss market
  developments and regulatory trends
- Bilateral Aid Agencies
- Investment Promotion Agencies
- Carbon Market Consultants and Advisors
- Law Firms
- Accounting and Auditing Firms
- Journalists