$100 billion $6 trillion http://www.selectusa.gov/energy-industry-united-states $100 billion http://www.selectusa.gov/energy-industry-united-states leader in the production and supply of energy http://www.selectusa.gov/energy-industry-united-states http://www.selectusa.gov/energy-industry-united-states http://www.selectusa.gov/energy-industry-united-states more focus on renewable energy sources http://www.selectusa.gov/energy-industry-united-states http://www.selectusa.gov/energy-industry-united-states $6 trillion $100 billion