- advisor
- Andreessen Horowitz
- articles
- Barack Obama
- Ben Horowitz
- biden
- brooklyn
- chicago
- Co-founder
- columbia
- Columbia University
- construction
- Department of Energy
- Director
- Duke University
- energy
- Energy Conservation
- energy efficiency
- Federal government
- Georgia
- Goldman Sachs
- Mitch Kapor
- New York
- oakland
- president
- TC
- U.S. Senate
- United States
- washington
- White House