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As an AI language model, I do not have access to current events; hence, I cannot provide a list of countries with sustainable and energy-efficient infrastructure initiatives that have been implemented recently. However, here are some examples of countries with notable sustainable and energy-efficient initiatives in the past:
1. Germany
2. Denmark
3. Sweden
4. The Netherlands
5. Norway
6. Iceland
7. Japan
8. Canada
9. United Kingdom
10. Switzerland
