Change a Light, Change the world

My name Aur means light so let me Enlighten you.

Changing the world starts with simple actions.

Most people when they think of energy efficiency and the need to upgrade their place think insulation and windows but Lighting system upgrades are typically the first place to look for low-cost energy efficiency measures. According to the Energy Information Administration 10% of your energy usage is lighting.

It is easier than ever to buy LED (75% less energy than the antique incandescent) bulbs. And yes there are many lighting upgrade incentives.

If you can buy a bulb with a higher Coloring Rendering Index (CRI) it is better. CRI represents the quality of light and its ability to render colors correctly.

Cost Comparison between LEDs, CFLs and Incandescent light bulbs






Light bulb projected lifespan

50,000 hours

10,000 hours

1,200 hours (long life bulb)

Watts per bulb

(equiv. 60 watts)

5-10 watts depending on brand

13-23 depending on brand


Cost per bulb




KWh of electricity used over

50,000 hours




Cost of electricity (@ 0.10per KWh)




Bulbs needed for 50k hours of use




Equivalent 50k hours bulb expense




Total cost for 50k hours




When doing a cost analysis to figure what bulb for a business to put in remember to include time/labor it takes to replace a bulb.

One trick you can do to make it seem like you are getting more light is to buy a bulb with a higher K light temperature. The lower the temperature the yellower and closer to fire or candle light it is while the higher the temperature the closer to “full Spectrum” outdoor light. Typical CFLs are sold as a warm white ( 2700K) or cool white ( 3000K ) but I would recommend a minimum of 5000K while 6500K would be outdoor on a cloudy day.

Typically people look at lumens but I have put in 5100K LEDs with hardly any lumens ( ~200 ) to replace a 2700K bulb with 880 lumens and due to the higher quality light it seems like more light. Let there be light! And let it be solar powered

Aur ‘DaEnergyMon’, is a NABCEP Certified Solar PV Installer™ with AES Solar in Carterville and started educating himself about renewable energy as a teenager even before (at age 15) he moved into a camper in his parents driveway to live off grid solar and ended up living off grid for 18 years. Aur understands that living how he does makes it very easy to advocate for a life of simpler living, energy efficiency and renewable energy. His name Aur (pronounced “or”) means light or to enlighten in Hebrew. Can be reached at

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