Certain renewable energy systems and equipment sold in Rhode Island are exempt from the state's sales and use tax. Eligible products include solar electric systems, DC-to-AC inverters that interconnect with utility power lines, solar thermal systems, manufactured mounting racks and ballast pans for solar collectors, geothermal heat pumps, and wind turbines and towers.

New York enacted legislation in July 2005 exempting the sale and installation of residential solar-energy systems from the state's sales and compensating use taxes. The exemption was extended to non-residential solar systems in August 2012 (S.B. 3203), effective beginning January 1, 2013. In 2015 (A.B. 3009) the exemption was extended to solar systems that are owned by third party owners, who provide solar electricity to residential and commercial users. Both solar lease payments and the receipts of the sale of electricity by such systems are exempt from state sales and use tax.  

For both residential

Emerald People's Utility District (EPUD) has a loan program through Pacific Cascade Federal Credit Union to help residential customers improve the energy efficiency of their homes. Through this loan program, residents can borrow up to $7,500 with zero interest to install insulation in the attic, floor, and walls, and to upgrade windows and doors. However, the maximum loan amount available through this program varies by technology. The first step to obtaining a weatherization loan is to call Emerald Energy Services and schedule an energy analysis. An energy analyst will visit the home to help determine what energy saving measures are

Note: S.B. 33, enacted in February 2021, increased and extended the RPS. 

In 2005, S.B. 74 established a renewables portfolio standard (RPS) requiring retail electricity supplier to purchase 10% of the electricity sold in the state from renewable sources by compliance year (CY) 2019-2020.  S.B. 119 of 2010 increased the RPS to 25% by CY 2025-2026. The RPS was extended again by S.B. 33 of 2021. The RPS applies to the state's investor-owned utilities, retail electric suppliers, municipal utilities, and rural electric cooperatives. Municipal utilities and rural electric cooperatives are allowed to opt out of the RPS requirement if

Nevada provides a property tax abatement for new non-residential and multifamily residential green buildings, and existing buildings or structures which are renovated for use by a manufacturer to meet certain green building standards.

Property tax abatement for new non-residential and multifamily residential green buildings

Non-residential buildings and multifamily residential buildings that earn certification under the United States Green Building Council's Leadership in Energy and Environmental Design (LEED) program may be eligible for a partial abatement of property taxes. As directed by the statutes, the Director of the Office of Energy, through Adopted Regulation R116-07, selected the LEED rating system, but

Idaho residents with homes built or under construction before 2002, or who had a building permit issued before January 1, 2002, qualify for an income tax deduction for 100% of the cost of installing new insulation or other approved energy efficiency improvements in an existing residence. Any insulation added must be in addition to, not a replacement of, existing insulation. Other energy efficiency measures that may be deducted are windows that are more energy efficient than existing windows, storm windows, weather stripping and caulking, and duct sealing and insulation.  Efficiency measures must meet or exceed the criteria for the component

In Minnesota, solar-energy systems purchased on or after August 1, 2005, are exempt from the state's sales tax. Solar energy systems are defined as:

"a set of devices whose primary purpose is to collect solar energy and convert and store it for useful purposes including heating and cooling buildings or other energy-using processes, or to produce generated power by means of any combination of collecting, transferring, or converting solar-generated energy." M.S. 297A.67, subd. 29.

Thus the exemption is very broad and could apply to solar Photovoltaic (PV) systems, solar water-heating systems and solar space-heating systems. All components of these systems

Loan Option Through the HELP program, a homeowner can obtain a five year loan to improve the energy efficiency of their existing home. “HELP loans function as standard unsecured underwritten residential loans. The lender makes and services HELP energy efficiency improvement loans of up to a maximum of $12,000.00 to participants who go through the normal underwriting process. Qualifying loan improvement measures are provided on a "Prescriptive List of Improvements", from which the borrower selects approved items. The LDNR loans one half (½) of the loan amount, through the lender to the borrower, for up to a maximum

*Note: The program is currently not accepting applications.

Through a public-private partnership with PowerSouth, Alabama's Local Government Energy Loan Program offers zero-interest loans to local governments, K-12 schools, and public colleges and universities for renewable energy systems and energy efficiency improvements that will eventually have a payback through utility savings. Under the program, municipal and county governments, and colleges and universities may borrow up to $350,000 for eligible projects, and K-12 schools may receive up to $350,000 per campus or $500,000 per school system for eligible projects. The minimum loan amount is $50,000. Eligible renewable energy resources generally include biomass

The Home Energy Loan Program is a statewide program of the Minnesota Housing Finance Agency administered by the Center for Energy and Environment Financial Resources. It offers low interest loans to homeowners who want to make energy improvements to their properties. Eligible improvements include water heaters, furnaces, air conditioners, building insulation, windows, and doors. Custom improvements may be eligible as determined by the program administrator.

The property should be single-family (1-4 units) residential. There is no maximum annual household income limit. Loans are secured through a mortgage on the property.