The Legislature hereby determines that:

1. (a) There is a national policy of reducing demand for nonrenewable energy sources, recognition of which is especially important to the economic welfare of California residents and is, therefore, an important state policy goal.
2. (b) Widespread purchase, installation, and use of effective energy conservation measures in designated buildings is a particularly promising and expeditious manner in which this goal may be pursued.
3. (c) The provisions of this part are intended to provide a flexible, practicable, and effective program for the financing of solar and energy conservation measures in buildings throughout the state.