The relationship between the banking sector and environmental protection is really vague. In fact, for a lot of environmentalists and bankers these are two completely isolated worlds. However, thanks to the Kyoto Protocol Clean Development Mechanisms (CDM) banks have became real pioneers in financing carbon trading deals. A senior executive of Doha Bank, a major Qatari private commercial bank, sought the cooperation of Japanese companies for a planned market in Qatar to trade greenhouse gas emission rights. Doha Bank Deputy Chief Executive Officer Raghavan Seetharama stated that the market will be established in Energy City Qatar, an energy business hub in the suburbs of Doha.

The deputy CEO also noted the rapid growth of about 20 percent a year in Islamic finance, or transactions consistent with Islamic jurisprudence. He said the size of Islamic finance is now estimated at $700 billion, including $50 billion worth of Islamic "Sukuk" bonds.