本文件将帮助回答许多类型的照明经济问题。它为从一组相互竞争的照明设计中进行选择提供了一个框架。它让我们深入了解了一个正在考虑的系统何时会“获得回报”的问题它可以帮助照明专业人士做出节能决策。最重要的是，它提供了衡量照明系统资本投资盈利能力的方法，可以客观地与其他竞争资本投资进行比较。值得注意的是，本文件是从“经济分析”与“如何超越预算”不同的角度编写的与其将经济分析视为工程或艺术分析的对立面，不如将其视为包含这些其他需求。

This document will help answer many types of lighting economic questions. It provides a framework for selecting from a group of competing lighting designs. It gives insight into the question of when a system under consideration will "pay off." It can help the lighting professional make energy conservation decisions. Most important, it provides methods for gauging the profitability of a capital investment in a lighting system, which can be objectively compared to other competing capital investments. It is important to note that this document is written from the point of view that "economic analysis" is not the same as "how to beat the budget." Rather than considering economic analysis as the antithesis of engineering or artistic analysis, it should be thought of as subsuming these other needs.