Today Lighting Science Group announced that it has become the first U.S. company to domestically manufacture one million LED bulbs in less than a year.  With the announcement, LSG also unveiled a new omnidirectional A19 LED bulb as the one-millionth bulb.  The 60-watt replacement is 75% more efficient than an incandescent bulb and dimmable, mercury-free, and relatively affordable.

The bulb will be available in January for less than $30.  Assuming six hours of use every day all year long with an average utility rate of $0.10 kWh, the new LED is supposed to have an energy savings payback of less than two years, according to an LSG press release.

The Definity LED has an output of 850 lumens, uses 13 watts, and lasts up to 50,000 hours, beating the competition in these areas and in price by about $10.

That said, one thing to keep in mind is correlated color temperature and color rendering performance.  I don’t have these numbers for the new A19 LED and will update this article upon obtaining the information from LSG.

As prices continue drop, the economic case for LED lighting becomes more and more undeniable, even for folks that don’t like the initial cost.  A light like this would only need to be changed every 23 years or so, depending on use and other factors, so there’s also the convenience factor to consider.

If you’re looking for help in reviewing the numbers associated with high-performance light bulbs, Lighting Facts is a great resource.  The site has a Lighting Facts Label that explains lumens, lumens per watt, color rendering index, correlated color temperature, and Kelvin temperatures, etc.

Credit: Lighting Science Group.