The Phaserl


Backup Electric Power Design Considerations- Part 2

by Duliskov, Survival Blog:

For any significant solar power generation, plan to cover your entire roof with panels. Consider installing a few panels on the roof of your trailer, if you have one; this will give you mobile power and better concealment. If you make the panels tilt or slide out from under each other, you can significantly increase the total surface exposed to the sun while stationary. Alternatively, install the panels on a ground support for easy access and scalability. Make sure that the selected location does not have structures or trees casting a shadow over, and take photos in different times of the day and all seasons. Power generation capability of slightly shaded solar panels drops dramatically, even if the shadow covers only 5% of their surface. If you don’t have the luxury of time, you can use an application to simulate where the shadows of each object will be at any given moment in time, summer or winter. (For example, you can use “Light Trac” iPhone app.)

The distance between the panels and the battery bank is essential, especially in case of low voltage, 12-24 Volt transfer to battery charger. The cable will dissipate part of the current as heat, wasting it, and the cables will be extremely expensive. A better option is to use a higher voltage, for example 96 Volts, or installing an inverter at the panels and sending an AC current down the line to the battery bank. Another option is to install individual self-synchronizing inverters for each panel. They will synchronize frequency with each other and the utility power, so you can simply plug them into your house grid via a special switch and feed your house simultaneously from the solar panels and utility power at the same time. The battery bank will be charged from any outlet in your house. This will make solar contribute to your energy bill without re-arranging your incoming utility lines and will be transparent to your utility company. Alternatively, it is possible to isolate few circuits on a separate panel to be only fed by solar and the battery bank.

Wind Energy Generation

Wind power is noisy. If you install wind turbines on a mast connected to the frame of your house, you will hear the grinding noise throughout your house, especially with larger turbines. Smaller turbines are not going to satisfy your power needs of a larger bank, but they can supplement a solar array or generator. Specialists in wind energy say “go big or forget about it”, because wind energy is extremely inefficient in the case of small scale generators. I never installed a wind turbine, but I read many books and distilled for myself the following: don’t do wind under 5 KW; for the cost of installation and maintenance, you could buy a larger solar system and have less trouble over time.

Read More @

Help us spread the ANTIDOTE to corporate propaganda.

Please follow SGT Report on Twitter & help share the message.

2 comments to Backup Electric Power Design Considerations- Part 2

  • Randy

    In a worst case, grid down scenario, nobody is going to have a need for more than a few kilowatts of electricity at the most anyway. What, you’re going to run your refrigerator or freezer, even though you won’t have any perishable foods to put in them? You’re going to run your TV or radio, even though no programs will be broadcast? You’re going to run your washing machine when you don’t have any clean water to put in it? You think that you’ll need a way to charge up your cell phone, even though none of the cell towers will be working? You think that you’ll be able to use your computer for anything other than a door stop when the internet is down because there’s no power for the servers?
    The only need for electricity will be to power some low voltage set up to charge a capacitor bank so you can run a few LEDs at night time for a few hours. The small DC motor from a car’s heater system hooked up to a fan will provide plenty of power to light up a few LEDs. Or hook it up to a bicycle and charge the cap bank that way.
    When the grid goes down for any of a number of reasons, having electricity in your wall outlets is going to be the last thing that you will worry about. Staying safe and unnoticed by the madding hoards, rather than being a beacon in a waste land, will be MUCH more important to you.

    • Craig Escaped Detroit

      Very LOGICAL reasoning you’ve got there. I thought it was very good.

      I’ve been researching and “tinkering” around with solar for more than 15 years now. I also have some experience with some BIG capacitors and I know that they don’t do well for holding a decent charge for running stuff, but for a small LED’s etc as you suggest.

      Big Caps are common in the large CAR stereo systems, and those caps, are very deadly, as they will discharge ALL their AMPS in a FLASH-BANG. Better storage (at a fairly low price) are the 6VDC Golf Cart batteries.

      You also are right about not needed so many things when the SHTF, grid down, phones down, etc.

      But for people who do install a WHOLE house, OFF grid home, they can operate their A/C & Heat Pumps systems, well pump, freezer-fridge (gardeners will have use for them), etc.

      And if we don’t get a total “in the toilet” situation, if we have SOME grid power, SOME infrastructure still working, then we may also have SOME phone service, SOME internet, TV, etc.

      The PARTIALLY bad, partially GOOD situation, is where Gold & Silver will be AMAZINGLY good.

      On the other hand, during a TOTAL TEOTWAKI, it is the FOOD pantry & ammo that will be more important until things start to grow back a bit more normal.

      Plan for the worst, hope for something less terrible. And yes, AVOID attracting attention to yourself. (gasoline generators are a welcoming horn for killers.)

      House lights, blasting music, are an AUDIO beacon for looters & killers.

      But I like Solar, and I like enough to run the entire house.

      And if silver becomes worth 3X or 5X MORE than Gold? Keep in mind that the full sized solar panels have MORE than an ounce of silver in them (most panels, but some types do NOT.)
      So, even if they break, they’ll still be worth the silver that’s in them.

Leave a Reply

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>