The Energy Conservation Vanguard(b)|节能尖兵-看守荷包，看守地球

While typical homes and businesses have only limited scopes for conserving energy, big energy consumers, such as those in the service and manufacturing sectors, can really benefit from a professional evaluation.

According to the Ministry of Economic Affairs' Bureau of Energy, the energy consumption of Taiwan's service sector increased by an average of 4.2 percent per year from 2001 to 2006, faster than the manufacturing sector's 3.7 percent annual increase. This figure has made the convenience stores on virtually every corner targets for consultations.

In 2006, the Bureau of Energy reached a voluntary energy conservation agreement with five convenience store chains, including 7-Eleven, FamilyMart, and Hi-Life. Under the agreement, the stores will keep their signs and outdoor lighting off during the day, reduce their outdoor lighting by half at night, replace their ceiling lights with energy-saving T5 fixtures, set their thermostats to 26°C, install LED lighting in their refrigerated shelves, and put in air conditioners with variable-frequency drives. The upgrades will cost a total of NT$1.8 billion over three years, but will save NT$1 billion annually in electricity costs, repaying their investment in less than two years.

Some energy conservation projects are incredibly expensive. In cases in which the high cost of a project gives owners pause, they may sign a project performance guarantee with an energy services company. Such guarantees remove the need to pay for the project in advance. Instead, the company pays for the project out of its savings on its energy bills over the period specified in its contract with the energy services company, with the project's performance certified by an impartial third party, such as the TGPF. The Taiwan Energy Service Association estimates that approximately 60 percent of domestic energy conservation projects utilize this kind of payment model and believes that it has been very helpful to the industry.

　　相对于一般家庭或商业用户的节能空间有限，服务业与制造工业等用电大户更能从专业节能健检中获益。

　　经济部能源局统计，从 2001 到 2006 年，台湾服务业的能源消费年平均成长 4.2%，大于制造工业部门的 3.7%，林立街角的便利商店首先就被纳入辅导对象。

　　2006 年，能源局和 7-11、全家、莱尔富等 5 大便利商店签订自愿节能公约，透过白天不开骑楼灯和招牌灯、夜晚骑楼灯减半、天花板照明更换成节能的 T5 灯具、室内温度设定成 26 度、冷藏柜改成 LED 灯、空调改换成变频系统等措施，总计 3 年投资了 18 亿元工程费用，但每年可省下 10 亿元电费，投资成本不到两年就回收。

　　有些节能工程所费不赀，如果业主评估后，认为一时付不出这么高的工程款而犹豫不决时，现在的新作法是，可以和能源技术服务业者签订『绩效保证方案』，业主无须先支付任何工程款项，而是由第三公正单位如绿基会负责绩效验证作业，将节省下来的能源费用，依合约规定按年度分期扣缴给能源业者。能源技术服务公会估计，目前台湾约有 60% 的节能工程实行这种『先享受，后付款』的模式，对带动能源服务产业有很大帮助。

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一般说来，传统的钨丝白炽灯，发光原理是让电流通过灯丝线圈，高温发热后产生连续性光谱的电磁波辐射，因此白炽灯的电能中有很大部分都是热能，只有 15% 发光，效率很低。而坊间俗称的『省电』灯泡发光效率约为 50%、冷光发光的 LED 灯则高达 70%。

目前一般办公大楼使用 3-4 支一组的直线形长灯管，它们因管径大小有 T5、T6、T8到 T12 之分（T 指直管，数字代表管径英寸大小）。简单来说，管径越细、耗材越少、含汞量越低的灯管，发光效率也越高（如 T5 灯管高达 89%），而 T5 灯管又因采用低频的电子式安定器，光波稳定、几乎不闪烁，平均寿命长达 1 万 5,000 小时，最为省电，也不易产生眼睛酸痛、降低视力等负面作用。坊间灯具林林种种，但只要记住一个原则，『长的比短的好、直的比弯的好、细的比粗的好、露明比加罩好。』（数据源：台湾光华杂志）