Solar farm installation costs range from $300,000 to $1,600,000, with most property owners investing around $950,000 for your project. Installation Cost Per Watt: Typically $0. 50/W for utility-scale projects, depending on scale and technology. Government Incentives: Federal Investment Tax Credit (ITC) or state-specific rebates can reduce upfront costs by 26–30%. Assumptions include standard polycrystalline modules, fixed-tilt racking, and moderate. Land acquisition: The cost of land for a solar farm typically ranges from $1,000 to $4,000 per acre, depending on location and other factors. Main cost factors include size, equipment, labor, and location.