Bingo! I found it!
A group that represents the interests of insulation suppliers (who
else?) has compiled a list of state and local level conservations
and click on any state of interest to see the programs within that state.
The list for Minnesota, for instance, includes:
Incentives for Minnesota
Xcel Energy - Energy Loans for Home Improvements
Loans for home energy improvements.
NSP Gas - Low Income Weatherization Project
A utility-administered weatherization program for low-income customers
Minnesota Power - Triple E New Construction
A utility-administered rebate program providing financial incentives
for new homes locally built that meet specific energy standards.
MN Housing Finance Agency - HOME Rental Rehabilitation Program
The HOME Rental Rehabilitation Program is solely for the
rehabilitation of existing rental properties. New construction and
acquisition are ineligible under this program.
MN Housing Finance Agency - Rehabilitation Loan Program
The Rehabilitation Loan program assists low to moderate income
homeowners in financing home improvements that directly affect the
safety, habitability, energy efficiency and accessibility of their
MN Center for Energy and Environment - Rental Energy Loan Fund
Low-interest loans for rental property owners in the 10-county metro
Minneapolis area to improve energy efficiency.
MN Housing Finance Agency - Rental Rehabilitation Loan Program
Loans to assist owners of smaller rental properties to finance
improvements to their investment properties.
MN Department of Commerce - Weatherization Assistance Program
A federally funded, state-administered weatherization program for
Private and Municipal Incentives:
Roseville Housing Resource Center - Community Fix-Up Fund Housing Program
City-administered loans for general home improvements, including energy efficiency.
It looks like a good and comprehensive resource.
Please don't rate this answer until you have everything you need. If
you would like additional information, just post a Request for
Clarification to let me know, and I'm at your service.
All the best,
search strategy: Google search on [ energy conservation programs state ]