Please add formulas in screenshots

Problem: York Power needs to determine a capacity expansion plan to meet New York's power needs for the next 20 years. The current capacity is 5000 kwh. The demand for the current year is 4000 kwh, and demand is depected to increase by 1000 kwh in each succeeding year. At the beginning of each year, York Power must determine the amount of capacity to add. Given inputs: Any year in which capacity is added, a fixed cost of $120,000 is incurred plus a cost of $120 per kwh of capacity. At most 10,000 kwh of capacity can be added in a single year. It costs $25 per year to maintain a unit of capacity. It costs $12 per year to produce a kwh. If production does not meet demand, a shortage cost of $80 per kwh short is incurred. Develop a model with integer or binary variables to minimize its cost for the next 20 years in excel