As an AI language model, I don’t possess the most recent information or the ability of web browsing. However, the following companies are known for their sustainable and energy-efficient senior living communities:
1. Atria Senior Living
2. Brookdale Senior Living
3. Sunrise Senior Living
4. Merrill Gardens
5. Del Webb
6. Erickson Living
7. Holiday Retirement
8. Senior Lifestyle Corporation
9. Five Star Senior Living
10. The Arbor Company.
