Ameresco Solar is a design, engineering, and solar integration company specializing in creating custom off-grid systems for industrial customers in various sectors such as oil and gas, railroad, telecommunications, and more. They also serve as a solar component supplier for a network of solar retailers, installers, contractors, and industrial end users, distributing a wide range of solar components. Additionally, Ameresco Solar designs and engineers grid-tie, grid-tie with battery backup, and residential solar power systems, providing a one-stop solution for products, engineering services, and project management. They offer the Ameresco Solar Financing Program for contractors and dealers, and sell products to both retailers and end-users through their distribution network.