USA Nationwide

ACEEE Energy Efficiency Program Database. This database provides summary descriptive information on energy efficiency programs being delivered through public benefit mechanisms and/or utility rate funding.

All of the latest news and information on green power marketing and renewable electricity, incl. utility green pricing programs, renewable energy certificates, state policies, financial opportunities… Updated weekly.

TIAP Tax Incentives Assistance Project, Energy efficiency tax information on federal income tax incentives for energy efficient products and technologies effective as of 2006, under the Energy Policy Act of 2005. For Consumers, Businesses, Builders, and Manufacturers.

The Database of State Incentives for Renewable Energy (DSIRE) is a comprehensive source of information on state, local, utility, and selected federal incentives that promote renewable energy.

Calculator for PV systems: cost, incentives, savings, etc