All capital investments require rigorous cost-benefit analysis to determine whether the investment is sound. Microgrids are no different. On the cost side, there is the upfront investment and the ongoing cost of operation and maintenance. On the benefit side, there is cost reduction plus income. Energy and economic trends are rapidly reducing payback time for microgrid investments. Clients with sufficient distributed energy resources can even achieve net zero generation where they self generate as much energy as they consume from the central utility grid. Factors are different in every situation and vary by geography, existing operational costs, and the value of continuity for the enterprise.