Homer Pro 3.15 May 2026

HOMER Pro 3.15

is a specialized software tool designed for the design and analysis of hybrid power systems. Developed originally by the National Renewable Energy Laboratory (NREL) and now managed by UL Solutions, it serves as a global standard for optimizing microgrids and distributed generation systems. The Power of Optimization

• Optimization engine for least-cost system design given constraints (e.g., capital costs, fuel prices, emissions limits, reliability targets).
• Detailed component models: generators, PV arrays, wind turbines, batteries with state-of-charge dynamics, converters, and programmable dispatch controllers.
• Time-series simulation (hourly by default) using input resource datasets (solar irradiance, wind speeds, ambient temperature) and load profiles.
• Financial analysis: net present cost (NPC), levelized cost of energy (LCOE), payback period, and cash-flow modeling.
• Sensitivity and dispatch strategy analysis: run multiple scenarios varying costs, resource assumptions, or policy parameters.
• Reliability metrics such as Loss of Load Probability (LOLP) and unmet load energy.
• Import/export grid modeling for grid-connected or weak-grid scenarios.

from a dropdown menu, view detailed properties, and create custom converters by copying existing ones with unique names. Optimization Fixes

• Off-grid village electrification planning where combinations of diesel, PV, and batteries are evaluated to minimize cost and fuel use.
• Remote telecom tower power system design to reduce diesel consumption and ensure uptime.
• Islanded microgrids for resorts or military bases evaluating renewables penetration and storage sizing.
• Grid-deferral or resiliency projects where on-site generation and storage defer distribution upgrades.