With strict new standards, the landscape of lighting is rapidly changing. Here’s everything you’ll need to know to keep up.  When Congress passed the Energy Independence and Security Act of 2007 (EISA), the incandescent bulb’s days officially became numbered. The law mandated strict new energy standards for lighting designed to kick-start a new era of greener, longer-lasting, more cost-efficient light bulbs — and this meant kicking outdated, inefficient bulbs to the curb. The rising standards have already rendered 100- and 75-watt incandescents obsolete, and on January 1, 2014, their 60- and 40-watt cousins will meet the same fate.

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