Bringing You The Power Of The Sun At Down To Earth Prices !
 


Click Here To Learn How Battery Backup Power Systems Work
 


INCENTIVES

Cash Rebates And Other Financial Incentives Are Available In Many states For Solar Powered, Grid Interactive Emergency Power Systems.

In Addition, A 30% Federal Tax Credit Is For The Purchase Of A Solar Powered, Grid Interactive Emergency Power Systems.


We Offer A Larger Rebate Than The Other Dealers.

Not only will you be going green, but you'll be seeing a lot more green. When you purchase a grid tie solar power system from us, you'll automatically receive our exclusive $400.00 per AC kilowatt supplemental rebate offer.

The other dealers only offer Edison's $250.00 per AC kilowatt cash rebate. And we did it without raising our already low, low discount prices.

Hurry This Limited Time Offer Expires Soon.


Power Failures Due To
Wild Fires


Power Failures Due To Earthquakes


Power Failures Due To
Ice And Snow Storms


Power Failures Due To
Tornadoes And High Winds


Power Failures Due To
Lightning Storms


Power Failures Due To
Hurricanes


Power Failures Due To
Floods


And No, We're Not Kidding,
Power Failures Due To
Solar Flares.


On March 13th 1989 A Solar Flair Is Exactly What Knocked Out Power To 6 Million People In Quebec, Canada For Over 9 Hours And Caused Equipment Damage And Tripping Of Equipment In Parts Of The U.S.

 And With The Sun's Next Peak Solar Cycle Occurring In 2012/2013, It's Something To Think About.

Click Here To Visit Nasa's Website To Learn ore About The Coming Solar Storms


In Any Event Your SolSurvive Solar Powered Emergency Power System Will Be There To Protect You.

There's A Thousand Reasons To Prepare For The Next Power Failure And With All Of The Financial Incentives Available, There's Not One Good Reason Not To.


LINKS

NASA

NOAA

Wired Science

Fox News

National Geographic

Wikipedia


Magnetic-Shield Cracks Found; Big Solar Storms Expected

National Geographic News

 

Low Intensity Solar Flair Strikes The Earth On August 4th 2010

NBC News


 

Emergency Backup Power System Questions And Answers

 

Q. I would like to purchase a solar system without adding batteries, but would like to have emergency backup power in the event of a power failure. Is this possible ?

A. No, as required by the National Electrical Code. All grid tie only inverters are required to disconnect from the utility grid and stop producing power during a power failure. This is done for safety reasons so that you are prevented from feeding electricity to the grid while a utility lineman is working on the grid which would pose the risk for electrocution.
 


Q. I would like to purchase a standard grid tie solar system with solar panels and an inverter. Can't I just add batteries to this inverter, so I can have backup power ?

A. No, a standard grid tie inverter is not designed to use batteries. You must use an inverter that has been specially designed to use a battery bank, in order to have emergency power during a power failure.
 


Q. Can I power my entire home during a power failure with a battery backup grid tie solar system ?

A. With a large enough solar array, battery bank and inverter, it is electrically possible to power every load in your home during a power failure but this is not recommended due to economic reasons. In a typical battery backup grid tie installation, the homeowner will be asked to choose essential loads that he or she wishes to continue to operate during a power failure. Loads such as a refrigerator, radio, TV, lights are typically selected. Keep in mind that the larger the number of loads and the longer they run, the larger the system that will be required to power these loads.
 


Q. A battery back up grid tie solar system sounds like a great idea. So why isn't everyone installing this type of system instead of a grid tie only system ?

A. There are tradeoffs. For one, a battery backup, grid tie system requires additional components which increase system and installation costs. Components such as batteries, cables, DC disconnects, a separate emergency load subpanel etc. all add to the cost of installing a battery backup solar system.

In addition battery backup grid tie solar systems tend to be less efficient than their grid tie only cousins, so in many cases you can expect a slightly smaller rebate in many states and slightly less electrical energy being fed back to the grid. The choice of whether or not to install a battery back up grid tie solar system versus a grid tie solar system is a personal one.

If you have frequent blackouts or are concerned about the possibility of blackouts, then a backup system may be the right choice for you. On the other hand if you are most concerned with feeding as much power as possible back to the grid to maximize the reduction of your electric bill, then a grid tie only solar system is what you want.

 

Q. Do I need to use solar modules when installing an emergency backup power system ?

A. No, many people install battery backup emergency power system without adding solar modules. The only drawbacks of not adding solar modules to your system are that you will need to use some other source of energy to recharge your battery back once it has been depleted in the event of a prolonged power failure such as an AC gasoline, diesel or propane generator or you may use some other DC charging source such as a wind generator or micro hydro system etc.

A battery backup emergency power system without solar modules will typically have a built in battery charger, so when the utility power is restored, the system will automatically recharge your batteries in preparation for the next power failure. 

A battery backup emergency power system without solar modules works just like a computer UPS. The batteries are kept charged by the system using grid power when the utility grid is up and uses that stored energy to produce electricity when the utility grid fails. No solar modules needed.

 

Q. Why would I want to use an AC generator with a battery backup emergency power system ? Why not use only a generator ?

A. During natural disasters, basic supplies such as food, water and fuel tend to be in short supply especially when the public begins to panic. The ability to purchase fuel is further hampered due to the inability to pump fuel during power outages. So needless to say, gasoline and other fuel may become scarce.

The problem with relying only on a generator is the fact that whether you're making a small pot of coffee or powering a large refrigerator, no matter how much or how little Watts you're drawing from your generator, you're continuously burning fuel.

The beauty of a typical battery backup emergency power system without solar modules is its built in battery charger and transfer switch that can use AC power from the utility company or an AC generator to quickly recharge your battery pack. So by connecting your battery backup emergency power system to a generator, you can limit your generator's run time by only running your generator to recharge your battery pack.

Once your batteries are brought back to a fully charged state, you can turn your generator off and produce AC power from your batteries for many hours depending on your loads, until your batteries are once again depleted, conserving fuel, without all of the teeth rattling noise and fumes or fuel.

 

Q. How big of a battery pack will my system need to provide power to my emergency loads ?

A. The Answer is a little complex but for example, if you installed a 48 volt 440 amp hour battery pack, you would have a capacity of 21,120 watt hours or 21.12 kilowatt hours kWh. To determine this, you would use Ohms law. The formula for power is Volts times Amps equals Watts. So 48 Volts X 440 Amp hours = 21,120 Watt hours.

If you connected, lets say a 200 watt load such as a desktop computer and monitor to a battery backup system with a 21,120 watt hour battery pack, you could run that desktop computer and monitor for approximately 105.6 hours continuously before needing to recharge. A 22 watt compact fluorescent light bulb would run for 960 hours. A 120 watt TV would run for 176 hours a 600 Watt refrigerator that cycled its compressor on for 15 minutes each hour could run for 140.8 hours.

If you were living completely off grid and would be discharging and recharging your battery pack every single day, it would be recommended that you only deplete your battery pack by 50% before needing to recharge. This is recommended to extend your battery's charge/discharge lifecycle expectancy. In backup power applications, it's ok to use 100% of your battery pack's capacity.

So to calculate the size battery pack you would need to power your specific emergency loads, you would need to determine the wattage of each item you want to power and then multiply each item's wattage by the amount of time that you expected it to run. This will give you the number of watt hours that your item will consume. So for example a 120 watt TV that runs for 6 hours would consume 720 Watt hours. A 22 watt compact fluorescent  light bulb that ran for 16 hours would consume 352 Watt hours. A 600 Watt refrigerator that ran its compressor for 15 minutes each hour for 24 hours would consume 3,600 Watt hours.

Once you have determined the Watt hour consumption, per day, for each item that you wanted to power during a power outage add all of the Watt hours up and that would yield your daily kilowatt hour consumption. With this information, it would be an easy task to calculate the appropriate size battery pack in kilowatt hours that you would need to meet your daily energy consumption needs.

 

Q. Can I power my home's central air conditioning unit during a power failure ?

A. Yes you can but the ability to power your central air conditioning system would depend on the size of your solar array, the size of your inverter and for night time air conditioner use, the size of your battery bank and the power consumption of your air conditioning unit. Central air conditioning units are big power users and would typically consume most of the power that a typical solar system would produce, leaving little power for essential loads. It would make far more sense to power a small window AC unit or a fan during a power failure, and save your solar system's energy for true emergency loads.

 

Q. Should I use sealed maintenance free batteries or wet cell batteries with my   battery back up emergency power system ?

A. That depends on where your batteries will be stored and how diligent you are at providing battery maintenance. Non sealed batteries will produce hydrogen gas and an acid mist while under charge or under a heavy discharge. Hydrogen gas can be explosive when used near an ignition source and the acidic mist is corrosive. Definitely something that you wouldn't want in a living space. Wet cell, non sealed batteries also require periodic watering and other maintenance, otherwise it is very easy to ruin an expensive set of batteries. If you decide to use wet cell batteries, they should be stored in a battery box that is sealed and positively vented via a pipe or hose to the outside air or in a well ventilated are away from sparks or flame.

Sealed, maintenance free batteries o the other hand, require very little maintenance and produce very little if any hydrogen or acid mist. The only drawback with maintenance free gel or AGM batteries is their cost. They can cost up to 30 to 50% more than a wet cell battery but can save you a tremendous amount of time when it comes to maintenance.

BUYING TIP ! Beware of any dealer that offers to sell you a battery back up power system that is designed for indoor use that utilizes wet cell batteries enclosed in the same cabinet as the inverter and other electronics. The combination of hydrogen venting batteries and the presence of electrical switchgear such as transfer switches and other devises that has a potential to generate a spark is a recipe for disaster.

 

Q. Can I buy a small battery bank now and add on later, should I decide to increase my battery banks capacity ?

A. Yes, but should should not add on after your original batteries have been in service for over a year. As batteries age, especially if they have undergone numerous charge discharge cycles, their capacity may become diminished. Connecting older diminished capacity batteries to fresh batteries can place a strain on the new batteries and cause them to also have a reduced capacity.

If you decide to upgrade your existing battery pack, its best to do this within the first 6 months and never after one year of use.  

 

 Q. I see a lot of self contained small to medium sized, self contained, emergency power kits hitting the market. Are these products any good ?

That depends. Always make sure that you're buying a name brand self contained system or a self contained system that utilizes off the shelf name brand components. Pure sine wave inverters may cost a bit more but pure sine waves are or utility grade inverters are better for your sensitive electronics than modified sine wave inverters. Here's a comparison of what these two inverter waveforms look like:


Actual oscilloscope tracing from a pure sine wave utility grade inverter with less 5% total harmonic distortion. Notice the smooth rounded transitions from positive to negative, just like your utility company. To your equipment and appliances this is like a glass of some smooth easy to swallow energizing drink. 

 

 

 


Actual oscilloscope tracing from a typical modified sine wave inverter with 35 to 40% total harmonic distortion. Notice the sharp sudden transitions from positive to negative. This is what causes the high harmonic distortion level. Definitely not like your utility company. To your equipment and appliances this like swallowing a glass of nails. Not as healthy.

 

 

 

All AC appliances and equipment are designed to run off of pure sine waves. Pure sine wave energy is the type of power that is produced by your utility company.

Benefits of running your equipment and appliances on pure sine waves:

  • Generates less electrical noise in your equipment. Means no lines on your TV set and no hum in your sound system.
     
  • Microwave ovens cook faster.
     
  • Equipment and appliances last longer.
     
  • Equipment and appliances run cooler and more efficiently.
     
  • Equipment and appliances that can be damaged when running on modified sine waves such as laser printers, rechargeable battery powered devices and pellet stoves run perfectly when operated from a pure sine wave inverter.
     
  • Telecommunications equipment run with less noise and hum.
     
  • Digital equipment such as computers operate with less errors and crashes.
     
  • Motors run at their intended speed.
     
  • Clocks maintain their settings.

 

 

 

 

 

 

 

 

 

 

SALES AND PRIVACY POLICY

Copyright © 2018 Off Grid Solar, Inc.