Laws and Incentives Data Collection Methods
The National Renewable Energy Laboratory (NREL) maintains a database of state and federal laws and incentives related to alternative fuels and vehicles, air quality, vehicle efficiency, and other transportation-related topics. State-level information is updated annually after each state's legislative session ends. Information for these updates is obtained from state legislative sites when the sites are deemed accurate and timely or by calling specific state offices directly. In addition, NREL maintains a resource list of the most useful websites and contacts for every state, as well as a list of search terms states routinely used in website searches. Tangible and unique financial incentives that utilities and private organizations offer are also included on the website. Please note that there are many other incentives that utilities and private organizations offer, including training, consulting, feasibility studies, and technical assistance among others, which are not included in this database due to the tremendous number of entities now offering these services to existing and potential customers.
Federal information is updated after enacted legislation is signed into law or when rules are issued by the responsible agencies. Existing information is reviewed at the same time new information is added to ensure it is still accurate and in effect.
Caution: The Alternative Fuels Data Center recommends that users verify with the appropriate state or federal authority that the specific law or incentive is still applicable before making a purchase or tax-related decision.