Four Connecticut towns have joined energy efficiency programs to get their businesses and residents to conserve their power and heating.

The Cornwall Energy is encouraging its residents to sign up for a home energy solutions assessment (HES), a program run through the state electric utilities that includes light bulb upgrades and weatherization.

Stafford also is calling on residents to sign up for the HES program, which calls for a $75-$99 copay for $1,000 worth of services.

Hamden has developed an Energize Hamden program where residents from June 1 to Sept. 30 can get rebates, discounts, and special financing on energy efficiency measures and products.

Glastonbury signed the Clean Energy Communities pledge, joining 43 other cities and towns to reduce municipal energy consumption 20 percent and buy 20 percent of its electric needs from renewable sources by 2018. By participating, Glastonbury earns points toward a free renewable energy system.