- Boxergy is an MCS certified installer of Air Source Heat Pumps and Solar PV and we also install Energy Storage. Boxergy is not just another installer. Boxergy is a Scottish company focused on making renewable heat and electricity affordable for all. Our plan is to bring together existing technologies and smart tariffs to allow our customers to buy their energy when its cheap and green and use it when they want. Boxergy will speed up your journey to NetZero, today!