The 2009 federal Recovery Act expanded two home energy tax credits: the non-business energy property credit and the residential energy efficient property credit. These are significant credits for anyone doing home renovations or buying new appliances or alternative energy equipment.
Go to IRS site for details: http://www.irs.gov/uac/Energy-Incentives-for-Individuals:-Questions-and-Answers
Although not veteran specific, North Carolina has a variety of locally funded financial incentives for maintaining an energy efficient residence or business.
This links to the resident-specific incentives: http://programs.dsireusa.org/system/program?state=NC