HOMER simplifies the task of designing distributed generation ( DG) systems-both on- and off-grid. How many and what size of each component are most efficient?.Which components are best for this system?.When you design a power system, you must make many decisions about the configuration of the system, such as: The HOMER Pro® micro-grid software by HOMER Energy is the global standard for optimizing micro-grid design in all sectors, from village power and island utilities to grid-connected campuses and military bases. First of all HOMER Pro, or HOMER is an acronym for ' Hybrid Optimization of Multiple Electric Renewables'.