Established in 1955, the Massachusetts Energy Marketers Association (MEMA) is a business association serving the home and commercial heating marketplace. MEMA represents over 300 companies across the state, including retail and wholesale/supplier operations. Collectively, MEMA’s retail members store, sell and deliver nearly 70 percent of the residential and commercial heating oil used statewide. The retailers also sell diesel fuel, Bioheat® fuel, propane and other fuels. MEMA also represents national and local heating equipment manufacturers and suppliers, and other businesses providing valuable goods and services to the industry.