Can SolarCity Scale Energy-Efficiency Services Like Solar Roofs?

What stops a home owner from ordering an energy efficiency upgrade?
Is is cost? Convenience? Confidence in the contractor?
SolarCity, the distributed energy financier and utility, just sent out free software to 16,000 of its customers that lets the homeowner order energy upgrades with “one...admirals bank, cooling, doe, efficiency projects, energy consumption, energy efficiency, heat pump, heating, home energy bills, home energy loan financing, Rebates, Rooftop Solar, software, solar leases, solarcity