Energy balance models have been used to help size and predict viability of wind generation integration intomicrogrid communities and can provide comparable analyses for marine resources as well. HOMER is a leader intechno-economic modeling software for microgrids allowing for component comparison and cost optimization overproject lifetime based on hourly resource availability and demand. MiGRIDS offers a greater management ofgeneration control and scheduling than HOMER, as well as higher temporal resolution, but lacks project lifetimeanalysis. These software tools will be used to analyze benefits and impacts of marine energy integration into Alaskamicrogrids using two sites as a case study for two types of marine energy converters. Igiugig on the Kvichak Riverwill be simulated with a river current energy converter and Tyonek on the Cook Inlet will be modeled with a tidalenergy converter. It is demonstrated that both models yield similar results, but each is designed to focus on differentaspects of microgrid simulation.