The project, which cost roughly NT $ 50 million, is expected to save the resort NT $ 8.8 million per year on its energy bills. Under the agreement the two companies signed, the resort will pay 80 % of the project's fuel savings over the next seven years (roughly NT $ 7 million per year) to Forever Friend. It will keep the remaining 20 % itself.
以長友城公司去年改善台中清新溫泉會館的熱水和空調機電系統為例，工程費約需 5,000 萬元，完工後一年可省下燃油費 880 萬元，去年初雙方簽訂 7 年合約，每年業主自己保留節省下來的 20 % 燃油費，其餘 80 %、約 700 萬元的節省費用則支付給長友城公司。