After Switch has gotten enough testing feedback from the hotels, the company says it will make the bulbs available for purchase online to customers. Woot woot. Switch had previously said it would plan to make the bulbs available to customers by the end of 2011, so the company seems to be slightly behind schedule, though moving right along.

Switch’s bulbs are designed to have small LEDs placed around the edge of the bulb, rather than at a central point (which is common for most LEDs) and at the same time the bulbs use liquid within it to cool the LEDs. This combo design is the secret-sauce behind why Switch claims its bulb “is the closest alternative to incandescent-quality light,” today on the market.” Liquid is a far more efficient medium for cooling than air (read more about liquid-cooled servers).

Switch will eventually be offering a 100-watt incandescent equivalent, as well as 40-watt, 60-watt, and 75-watt equivalents. The 40-watt bulb is supposed to be able to retail for under $20, while standard LED bulbs on the market can cost as high as $40 to $50 per bulb — I’ve bought ones in the mid-$30 range. Switch says its bulbs use 80 less energy than incandescent bulbs and the return on investment is about a year.

The company is backed by VantagePoint Venture Capital Partners.

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