Net metering laws which give credit for electricity fed into the grid. The Electricity Feed Law in Germany is currently the main driver of PV growth in the world.

Incentives such as rebates and tax credits at the federal, state and local level to encourage consumers to consider solar power.

Government grants for fundamental research in solar technology to make production cheaper and improve efficiency.

Development of solar loan programs which lower deployment costs. The Indian Solar Loan Programme sponsored by UNEP has brought solar power to 18,000 homes in Southern India.[92] Success in India's solar program has led to similar projects in other developing areas such as Tunisia, Morocco, Indonesia and Mexico.