What is operations and maintenance and how does it work? Operations and maintenance is a preventive measure to maintain your renewable microgrid system. It includes tasks such as inspections, cleaning, minor part replacements, lubrication and fluid monitoring. Knowledge of power systems, distributed energy resources (DERs), and microgrid control logic. Military service members and veterans with a rank of E-5 or higher plus appropriate equivalent combination of education and years of experience as outlined below will be considered for this opportunity. Leverage your professional network, and get hired. We are committed to providing a work environment that provides everyone equal access and opportunity to contribute and drive meaningful outcomes.