1 Subjects: “...renewable energy systems...”

2 Subjects: “...renewable energy...”

3 Subjects: “...urban renewal...”

4 Subjects: “...renewable energy...”

5 Subjects: “...renewable energies...”

6 Subjects: “...renewable energy systems...”

7 Subjects: “...renewable energy...”

8 Subjects: “...renewable energy...”

9 “... been created that encourage the development of renewable sources of energy in general and biofuels...”