For a $30$ storey tower building, the construction cost was estimated to be around $$17972763$ without considering the cost of thermal insulation, in one of the design alternatives, thermal insulation system is suggested to improve the thermal performance of the building. The initial cost of thermal insulation system is estimated to be around $$126013,$ in return, $8102$ kWh of energy is expected to be monthly saved due to the thermal insulation. The current electricity price is around $0\mathrm{.}5$ $$/$kWh$,$ and it is expected to increase annually at a rate of $2\%.$ For an analysis period of $25$ years, and considering a discount rate of $5\%$ answer the followings:Find the life cycle energy saving?

Find the total ife cycle cost of the thermal insulation system?