A solar project manager oversees the installation of solar projects, from small residential and commercial roofing projects to large-scale solar power plants. Your duties and responsibilities in this career can vary slightly depending on the scale of your project plan, but many of the principles are overlapping. You need to know how to develop budgets, manage proposals and bids from contractors, negotiate prices, pull building permits, coordinate the construction schedule, and be familiar with tax incentives and rebates for which your clients may qualify.