Households in most developed countries generate a considerable amount of waste, the so-called municipal solid waste (MSW). When MSW is used for electricity generation, 360g of CO2 are released per kWh. On the other hand, 450g CO2 per kWh are released from a natural gas power plant. Calculate the amount of CO2 (in metric tons) that can be reduced every year when a 2 GW natural gas power plant is replaced by MSW power plant.