Many corporations are working toward developing products for which they can claim a zero-carbon footprint. A large manufacturing site uses 25,000 MWh electricity, which is the largest contributor to the carbon footprint of its products. This electricity is obtained from the local grid, which emits 0.763 kg CO₂/kWh and costs $0.101 per kWh. The company is considering the installation of solar panels to generate this electricity. The life cycle CO₂ emission of the solar farm that is to generate the 25,000 MWh is estimated to be 40 g/kWh and the installation cost is $17.69 million. What will be the reduction in the manufacturing site's carbon footprint with this solar farm? Determine its payback period.