| Canadian Renewable Conservation Expenses (CRCE) |  |  | Canada | 1996 | 
              
                                                                                                        | Residential Energy Conservation Subsidy Exclusion |  |  | United States of America | 1996 | 
              
                                                                                                        | Tax Credit for Sustainable Development (Le Crédit d’impôt Développement Durable)(CIDD) |  |  | France | 1996 | 
              
                                                                                                        | Green Tax Package |  |  | Denmark | 1995 | 
              
                                                                                                        | Reduced VAT on Public Transport Tickets |  |  | Spain | 1995 | 
              
                                                                                                        | Tax Exemptions for the Import of Renewable Energy and Energy Efficiency Equipment Materials |  |  | Tunisia | 1995 | 
              
                                                                                                        | Accelerated Capital Cost Allowance |  |  | Canada | 1994 | 
              
                                                                                                        | Alternative Fuel Tax Exemption |  |  | United States of America | 1994 | 
              
                                                                                                        | Environmental Bonus for Wind Power |  |  | Sweden | 1994 | 
              
                                                                                                        | Energy Policy Act |  |  | United States of America | 1992 | 
              
                                                                                                        | Federal Business Investment Tax Credit (ITC) |  |  | United States of America | 1992 | 
              
                                                                                                        | Federal Renewable Production Tax Credit (PTC) |  |  | United States of America | 1992 | 
              
                                                                                                        | Renewable Electricity Production Tax Credit (PTC) |  |  | United States of America | 1992 | 
              
                                                                                                        | Renewable Energy Production Incentive (REPI) |  |  | United States of America | 1992 | 
              
                                                                                                        | Tax Deduction for Investments in Energy Efficiency & Renewable Energy by Enterprises |  |  | Belgium | 1992 | 
              
                                                                                                        | Tax Incentives for Building Refurbishment |  |  | Switzerland | 1992 | 
              
                                                                                                        | Integrated Energy Act |  |  | Republic of Korea | 1991 | 
              
                                                                                                        | Small Ethanol Producer Tax Credit |  |  | United States of America | 1991 | 
              
                                                                                                        | Mini-hydroelectric Power Incentive Act (RA 7156) |  |  | Philippines | 1991 | 
              
                                                                                                        | Modified Accelerated Cost Recovery System (MACRS) |  |  | United States of America | 1986 |