Premium: 200 MW high-landing land, aggressive interconnection plan. Solar Power Plant Cost is a critical consideration for anyone looking to invest in renewable energy. The investment is influenced by. Buyers typically see total project costs in the range of several tens to hundreds of millions USD, depending on capacity, location, and interconnection requirements. The main cost drivers include solar module capacity, balance-of-system equipment, land rights, and permitting timelines; price varies. The cost of constructing a solar power facility varies widely based on several factors: 1) System capacity, 2) Location and site conditions, 3) Type of technology used, 4) Regulatory and permitting costs, 5) Financing options. This work has grown to include cost models for solar-plus-storage systems. Af-Service AG Investment Group offers long-term loans covering up to 90% of the construction cost of solar power plants and related infrastructure.