Whether you live off grid or in a regular home, you need light. With the right number and position of windows, you can get along just fine during the day, but once the sun goes down, you start needing some sort of lighting. Fortunately today there are lots of options for those of us who live off grid.
If you are working directly from 12 volt batteries in an off grid situation, you can look at automotive lighting supplies. This is also good to use as backup if you are running an inverter and the power goes too low, of course you don’t want to run your batteries that low all the time, it will damage and shorten the life of your batteries, but for emergency use it’s just fine. Automotive lighting is designed to run directly from a 12v battery or through their own power supplies run from a 12v battery. You can also look at other gadgets made to run off of 12v batteries, many big truck suppliers have lots of goodies that run off of 12v, from lights to coffee makers, coolers, ovens, microwaves and more. The nice thing about running directly from 12v is you aren’t losing anything when you convert DC to AC, the drawback is these items tend to cost more upfront.
Most lights will come in 110 v power rating, some will come in 12 v rating, they are not interchangeable, you cannot plug a 12 v light into a 110 v outlet, and you can’t use a 110 v light in a 12 v outlet, be sure you are getting the correct lights for where you are using them.
If you are running an inverter, like we do, that takes the DC power and converts it to AC power that can be used by just about anything that plugs into the wall. From there, you can use any standard light that runs off of 110v as long as you have enough power to run it.
Types of lights
There are many different types of lights, each has it’s own pros and cons. The standard incandescent light bulb is cheap and puts out lots of light, but it is very inefficient, much of the power going into the bulb is converted into heat instead of light, these are not recommended for use in an off grid situation.
Compact fluorescent light, these became popular and affordable a few years ago, they are much more efficient than incandescent light bulbs, they put out a lot of light and last a long time. The problems with them are they do have a flicker just like any other fluorescent light, and they contain mercury so there is a risk to your health if you break one, and because of that mercury, disposing of them is tricky, you can’t just toss them in the trash or burn them, you must dispose of them properly. We do use a couple of these in our sky castle, we tied a piece of string to the light and to the fixture so that when we remove it, we can’t accidentally drop it on the floor. We will not buy anymore of these but will use the ones we have until they no longer work, then we will dispose of them properly and replace them with LED lights.
The Harbor Freight 45 watt solar panel kit comes with 2 CFL lights, these are designed to be plugged into the charge controller that comes with it, these run directly off 12v power. We have had and used lots of these over the years, a few of them have overheated and melted the plastic housing, fortunately we were there when it happened and possibly prevented a fire. I would use them, but I would never leave them unattended.
Now here is where the off gridder really shines, this lighting is great, super efficient, it uses so little power that it’s almost free to use, they do cost a bit more upfront, but the price of them is coming down year after year, and the power savings you get from them is so worth the extra cost. We have several LED lights in each of our rooms, along with a couple of CFLs, we usually use the LED lights, but when we need extra lights we turn on the CFL for a bit. The LED lights we have are pretty low light and low wattage, the next LED lights we buy will put out more light.
In the LED category there are lots of great battery powered LED lanterns, they look like old school lanterns but are lit by LEDs and powered by batteries, and if you get creative, you can even use those garden lights, the ones that are set outside during the day, they have little solar panels on them, they charge up small rechargeable batteries, usually AA size, then when it gets dark enough, the LED light inside comes on. I have heard of people using these for light inside their cabins.
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Old school lighting
Of course in the event that there is no electricity or you just don’t want to use it, you can always go old school, there are candles, oil lamps, propane powered lanterns and such. These all use fire to create the light, and the safety of them is directly dependent on the precautions you take. Using a reflector behind the light will create even more light. You can even make your own oil lamps from olive oil and mason jars, just Google it.
We use a variety of lights in our sky castle, mostly LEDs, some CFLs which will be replaced by LEDs as they need to be replaced, we have candles though those are very seldom used. We have a variety of LED flashlights and touch lights that we use mainly when we are going outside after dark. I have learned not to leave home without having a flashlight with me, even when I plan on getting back before dark, it often happens that it’s dark when I get home, especially in the winter when it gets dark much earlier.
Using mirrors and lightly colored surfaces will make your light go a long way, it was amazing how much difference it made when we painted the raw wood walls and ceiling in the sky castle.
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