As an AI language model, I don’t have personal preferences. However, here are ten real estate developers and companies leading the way in sustainable and energy-efficient waterfront development projects:

1. The Related Group
2. Forest City Ratner Companies
3. Hines
4. Lendlease
5. Tishman Speyer
6. Skanska
7. Brookfield Property Group
8. Groupe Germain Hotels
9. TDC Development
10. LMC Living LLC