The smaller the area you use to do business, the less you have to pay for heating and power. Think about ways to use your space more efficiently, and close off areas that aren't needed. Wicked Joe, a coffee roasting company based in Brunswick, did just that, and reduced its heating costs by more than a third. By Jaime McLeod For more info on what Maine businesses are doing to be more eco-friendly, see the MaineBusiness.com green guide.