The county council says energy improvements would help cut bills for residents.
Up to 500 homes across North Yorkshire will receive government cash to make them more energy efficient.
The authority said emissions from homes accounted for 23% of the county's total carbon dioxide emissions in 2019.Greg White, executive member for stronger communities and climate change, said: "If we are to reduce both fuel poverty and carbon dioxide emissions, we need to both radically improve home insulation and switch households to cleaner, sustainable and more energy efficient heating.
Tenants in privately-rented homes will also be able to apply, but landlords must contribute a third of the total costs of the improvements.
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