Renewable energy specific software is a type of application that is designed to meet the needs and challenges of renewable energy projects. This type of software often includes features that are tailored to the type and scale of renewable energy sources, such as solar, wind, hydro, or biomass. For example, HOMER is a tool that helps you design and optimize microgrids and hybrid systems, using renewable and conventional energy sources. It enables you to model and compare scenarios, evaluate technical and economic feasibility, and optimize system performance and reliability. RETScreen is a tool that assists in assessing the viability and impact of renewable energy projects, using data and analysis from various sources. It allows you to estimate energy production, savings, costs, emissions, and financial indicators, as well as conduct risk and sensitivity analysis. Lastly, SAM is a tool that helps you model the performance and economics of renewable energy systems with detailed technical and financial inputs. It enables you to simulate various types of systems, such as photovoltaic, concentrating solar power, wind, geothermal, or biomass. This allows you to compare different options and configurations.