Solar energy technicians spend their days working on solar panels in a variety of applications. Responsibilities might include: Installing and maintaining panels on the roof of a residential home or corporate office. The individual at work cleans the installed solar modules, checks the photovoltaic system for uninterrupted power output and identifies faults in the PV system. Solar energy technicians spend their days working on solar panels in a variety of applications. Responsibilities might include: Installing and maintaining panels on the roof of a residential home or corporate office.