From Appropedia

HOMER Pro is a heavily used microgrid energy simulation software.

In the studies such as Economic viability of captive off-grid solar photovoltaic and diesel hybrid energy systems for the Nigerian private sector and [1] HOMER was mainly used for systems modelling and obtaining simulation results. The software is designed with capacity to model a combination of traditionally generated and renewable energy power systems, including storage systems and load management. It considers systems complexities and builds the most cost-effective solutions in optimization with predefined input variables. The software also has capacity to simulate thousands of comparable systems depending how it is setup.