Customers (in this case the school district) pay no money up-front, paying only for the solar energy they use and typically seeing reductions on their utility bills as soon as the system is connected to the grid.

FORBES: Could Solar Save Education?

The solar mission in its first phase focused on areas already connected to the grid and had a pricing system that bundled four units of thermal electricity with one unit of solar-based power, which reduced the average per-unit cost of solar electricity.

WSJ: India Plans Subsidies to Boost Solar-Power Sector