For example, says Wu Huang, a solar hot water system, though simple enough in structure, costs NT $ 40-80,000, has to be installed on the roof, and covers a substantial area.
吳煌舉例，像是利用太陽能的熱水系統結構雖然簡單，但一台仍需五、六萬元，必須在屋頂架設且所需面積龐大，很難讓大樓全體住戶同意裝設。