Are you thinking about replacing your current lights with new LED lights and wondering how much you'll save? Since the savings depend on the lights you're replacing and what you're replacing them with, we thought we'd show you the simple math and provide you with a calculator so you can easily estimate your savings.
ENERGY CONSUMPTION PER DAY
Watts x Hours of Use = Watt Hours / 1000 = kWh
For instance, 60 watts x 3 hours per day = 180 watt hours per day. 180/1000 = .18 kWh per day.
ENERGY CONSUMPTION PER YEAR
Now multiply by the number of days the bulb is used per year. In the example above, let's say the bulb is used 365 days per year. So now you get .18 x 365 = 65.7 kWh per year.
COST PER YEAR
Now multiply by your cost of electricity per kWh, as seen on your energy bill. Don't forget to include delivery costs, which are often listed separately.
15 cents = .15 x 65.7 kWh = $9.86
COMPARE THIS WITH LED LIGHTS
Although your hours of use and cost of energy may be different, whatever numbers you choose for those will remain the same when replacing old lights with LED lights. The only factor that changes when installing LED lights is the wattage used to produce the light you need. An easy way to convert the cost of the old bulb to the cost of an LED is this:
(Annual Cost of Previous Bulb x LED Wattage) / Previous Bulb's Wattage
For example, if you're replacing a 60 watt incandescent bulb ($9.86 per year) with a 10 watt LED:
($9.86 x 10 watts) = $98.60 / 60 watts = $1.64. This is the annual cost of the 10 watt LED bulb. Much less than the $9.86 of the 60 watt incandescent bulb!
Now if that's still confusing, you can simply plug all your factors into our handy dandy energy savings calculator and forget about having to carry the one. (Image below links to our calculator online.)
For many people, lighting is something they only think about when replacing a light bulb. But inside the industry, we see plenty of interesting stories about light. And a lot has happened in 2015, so once again we offer our "Year in Lighting Review" to showcase some of our favorite moments this year.
LEDs Keep Red Meat Looking Red Longer?
The University of Missouri explored whether LED lighting could keep red meat looking red longer in order to encourage more sales.
It turns out that any light turns starts turning meat gray (though this can still be safe to eat) sooner than meat kept in the dark. But initial results showed LEDs kept meat red longer than meat kept under fluorescent lights. Some grocers have begun changing to LEDs in meat display cases.
Read more in the original article!
Mariners were the First MLB Team to Install LED Lighting
Many of us no doubt remember the blackout that occurred at the Superbowl in 2013. The lights went out and play was interrupted for 34 minutes. A big part of that was due to the fact that metal halide lamps that light up most sports fields cannot be turned on and off like the lights people use in their homes or offices.
Metal halides have a restrike time of several minutes; once they're shut off, the arc tube needs to cool down before you can turn the lights back on. Then they have a prolonged warm-up period as they gradually approach full light output.
LED lights not only save money by using far less energy, but they also eliminate the problem of restrike and warm-up periods. So many stadiums are beginning to install LED lights, and the Mariners' Safeco Field was the first MLB stadium to have them installed. Read the full article here.
Li-Fi Building Steam
We're all familiar with Wi-Fi as the way we transmit wireless data with radio waves. But in the last few years, Li-Fi has made some big strides, and it looks like it won't be long before we use light to transmit data faster than we can with Wi-Fi. This year, Li-Fi was frequently in the news, and a recent TED talk showed how it can be integrated into solar panels to connect the world even in remote locations.
Click here for some of the latest news on Li-Fi.
Solight Design Launches "Flat Pack" LEDs for Emergencies
Inspired by needs of the Haitian people following the 2010 earthquake, the CEO of Solight Design developed an LED light that could fold flat in order to package large quantities easily and inexpensively, which is especially important for humanitarian relief efforts. The light pops up into a box format and charges from the sun. It can run approximately 8-12 hours when fully charged, and produces light equivalent to a 10-15 watt incandescent bulb, depending on the setting.
The concept is meant to extend beyond emergency situations to more than 1 billion people worldwide without access to electric lighting, joining a number of other efforts to get safe lighting to the world.
This year, the company successfully funded a Kickstarter campaign to ramp up production and distribution and turn their idea into a widespread solution.
Artificial Skylight Seeks to Exactly Reproduce Sunlight
While it might not produce the warmth of sunshine, developers of a new artificial skylight called Coelux have tried to exactly mimic the experience of sunlight in a room. It even uses the same scientific process that makes the sky appear blue, so you see "blue" in addition to sunshine "through" this skylight. One goal is to provide office spaces that provide an apparent connection to the sun, even if they underground or at the center of a building.
Right now, the price is well out of range of your average home, but maybe through commercial adoption, this kind of lighting will become commonplace.
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