1. Forest City Realty Trust: This company has developed several sustainable and energy-efficient urban regeneration projects, including the South Station Tower in Boston, Massachusetts, and the Central Station development in Memphis, Tennessee.

2. Hines: Hines is a global real estate developer that has a strong focus on sustainability and green building. Some of its notable projects include the One Bryant Park tower in New York City and the T3 office building in Minneapolis.

3. Skanska: Skanska is a Swedish construction and development company that has a strong commitment to sustainable building practices. It has developed several sustainable urban regeneration projects, including the Brock Commons Tallwood House at the University of British Columbia in Vancouver.

4. Lendlease: Lendlease is an international property and infrastructure group that has a strong focus on sustainability. It has developed several sustainable urban regeneration projects, including the Elephant Park development in London and the Barangaroo South development in Sydney, Australia.

5. Mace: Mace is a UK-based construction and development company that has a strong focus on sustainability and green building. Some of its notable sustainable urban regeneration projects include the East Village development in London and the Southbank Centre redevelopment in Melbourne, Australia.

6. Argent: Argent is a UK-based property developer that has a strong focus on sustainability and regeneration. It has developed several successful sustainable urban regeneration projects, including the King’s Cross development in London.

7. Lendlease Europe: Lendlease Europe is a subsidiary of Lendlease that focuses on sustainable urban regeneration projects in Europe. Some of its notable projects include the Silvertown Quays development in London and the Milan Innovation District.

8. Tishman Speyer: Tishman Speyer is a global real estate developer that has a strong focus on sustainability. Some of its notable sustainable urban regeneration projects include the Jackson Park development in Chicago and The Point development in Washington D.C.

9. Mosaïc Immobilier: Mosaïc Immobilier is a French property developer that has a strong focus on sustainable and energy-efficient building practices. Some of its notable sustainable urban regeneration projects include the Les Docks de Saint-Ouen development in Paris and the Languedoc district in Montpellier.

10. H2O Urban: H2O Urban is a UK-based property developer that focuses on sustainable and energy-efficient urban regeneration projects. Some of its notable projects include the Greenford Quay development in west London and the New Garden Quarter development in Stratford.