Goal Zero Yeti 1250 : A Workhorse Solar Generator

 Yeti 1250 : The Goal Zero Yeti 1250 Solar Generator Kit  or the stand alone Yeti 1250 Solar Generator is the proverbial elder statesmen in the world of of Solar Generators

Goal Zero's Yeti 1250 has been around in the market for a long long time thanks to its solid reliability. It is a no frills performer.

The Yeti 1250 is  heavy duty solar generator that will give you oodles of power without the style and portability of some of the newer heavy duty solar generators like the Inergy Kodiak

Bob Bassignani of Nags Head, NC - "Me and My friends in the fishing entertainment business like the Yeti 1250 as it can take a lot of punishment. Its heavy but really sturdy and adding batteries is a cinch"

Goal Zero Yeti 1250 Solar Generator Kit

Goal  Zero Yeti 1250

In a hurry : Check out 

the Yeti 1250 here 

Old timer and new converts to the Yeti 1250 like its extensibility. You can add additional batteries to increase its power capacity greatly. 

For the very impatient the box on the right/above will give you the important facts in one place. For those that seek more, read on.

Goal Zero Yeti 1250 Solar Generator

This post will explore the Goal Zero Yeti 1250 in detail and  later in the article talk about how it could be used in an underground shelter.

POWER : 1250 WHWeight : 116 lbs

Goal Zero Yeti 1250 Heavy Duty Solar Generator KitBest Solar Generators yeti1250
2 Reviews

Solar Panel –External  Boulder  100W panelsBattery :100 Ah AGM
Recharge : AC, 12V, SolarOutputs : USB (4),12V (2), AC (3)


What can it power?

 Go-Pro-5-watts-Iphone-5-wattsGo Pro/Iphone
5 watts
 TV-32-inch-60-watts32″ TV
60 watts
650 watts
 LED-Light-8-wattsLED Light
8 watts
Mini-Fridge-60-wattsMini Fridge
60 watts
coffee-blender-1000-wattsCoffee Blender
1000 watts
30 watts
350 watts
Circular-Saw-1200-wattsCircular Saw
1200 watts
50 watts
computer-with-monitor-500-wattsComputer + Monitor
500 watts
Yes RV/Window AC-1500-wattsRV Window AC
1500 watts
AMAZON REVIEW : Yeti 1250 Kit + Boulder 100BC |Titepants October, 2017 |
Great product and great company. Excellent customer service from Amazon and Goal Zero!

Tried and Tested : The Goal Zero Yeti 1250 Solar Generator Kit is one of Goal Zero’s most reliable and tested products in the market. It is not cheap but it will give solid reliable service.

Yeti 1250 - Solar Panels

Solar Panels : Only the Goal Zero Yeti 1250  Solar Generator kit ships with Solar Panels.  You can buy the Goal Zero Yeti 1250 as a standalone Solar Generator as well.

The Standalone Yeti 1250 will need to charged directly using a power source other than Solar Panels.  More on that later.

The Yeti 150 Solar Generator Kit ships with Boulder 100 Briefcase Solar Panels. The Panels have a stand and standard installation cords.

Adding an additional set of panels to your Yeti 1250 Solar Generator kit will be beneficial in the long run . More panels generator more power and that will charge the Yeti 1250 much quicker than with a single set of Solar Panels.

Goal Zero Yeti 1250 – Output and Power

Plenty of Outputs : The unit has 4 USB outlets each generating 2.1 Amps and thus will charge multiple USB devices like your Apple or Android smart phones very easily. There is a 12 V charging outlet and you can use this for all devices that connect to the car charger outlet of your vehicles.

Serious Power :  The 100 Amp Hr AGM battery with a capacity of 1250 watts gives this solar generator its serious power capability. You can access this power through  three pure sine wave outlets for AC power producing 1200 watts of running power with surge capacity of 1500 watts.

Devices Galore : You can run a small refrigerator, a laptop and a couple of lights or an oven off these three AC outlets. Power tools are also a cinch and you will see this unit on the pickup’s of many contractors.

Roll Cart  : The kit has a roll cart since the unit is heavy at 116 pounds.

Contractor Friendly : The reason many contractors like the Goal Zero Yeti 1250 is because you can easily add additional AGM batteries to increase the units capacity. They larger the daisy chain, the more more backup power for your home or work site.

And here is a link to the Yeti 1250 on Amazon .

Goal Zero Yeti 1250 – use in an Underground Shelter

A disaster such as war time or an asteroid hit on the planet is not something we can predict but we can definitely plan for as a contingency measure. This article discusses the utility of having the goal zero 1250 solar generator for your under ground shelter as your primary backup power source during such a calamity.

In a disaster event such as a massive solar flare, a high altitude nuclear explosion, an dirty nuclear bomb, or a focused EMP weapon the end result is an instantaneously emitted pulse of  intense electro magnetic energy which radiates outwards.  Much of this energy will be soaked by the power grid as most of our power lines are above the ground and will act like giant antennas. They will distribute this energy to everything that is plugged into the grid and this intense spike of energy will likely permanently damage all the equipment.

Our electronic equipment in the underground shelter will not be connected to the grid and will thus survive the EMP pulse through the grid. However, the effects of the EMP pulse  also radiates outwards through the air, enveloping everything in its path. Hence, the added protection of being underground will hopefully shield us from the pulse. Of course the degree of damage depends on the distance from the event.

Yeti 1250 – Power in the Underground Shelter

The unit is pre built and pre packaged with enough input and output device options to make the under ground shelter hum with power. An added benefit of the Goal Zero 1250 unit is that it also has an included 100 AH battery.

The unit has 3 USB outlets. The USB outlets can for out 2.1 Amps each and will suffice for a laptop or a smart phone. Of course the phones will likely not work after a disaster. The 12 V charging outlet will be your choice of power for your indoor lighting. Check out the section below on lighting for the shelter.   There are three 110 V AC  outlets and they can be used to run a small refrigerator and your communication equipment – ham radios etc. ( see section below).

POWER : 1250 WHBattery :100 Ah AGM included – you will purchase Golf Cart or Gel Cel batteries separately for additional backup.Solar Panel –External purchase separately preferably 50W each and 3

Goal Zero 1250 : Devices Charge capacity

Lamp (4 WH)312charges
Smartphone or GoPro (5 WH)250charges
Digital Camera (8 WH)156charges
Tablet (30 WH)41charges
Laptop (50 WH)25charges
Light Bulb (30 W)41hours

The Goal Zero 1250 is the largest solar generator from Goal Zero and is heavy at 116 pounds but the wheels are a blessing.


Given the extreme effects of an EMP event,  it is advisable to have two types of lights available in the shelter – standard 12 V DC Fluorescent lights which are hardy and not prone to failure during an EMP event and LED lights.


LED lights use much less power and will be the best bet post the disaster as they will last longer with the same power.  Unfortunately, LED lights may be vulnerable to the EMP effect.

You should store all your LEDs  in a Faraday cage until after all threat of an EMP has passed.


Communication will be key post a disaster. It is best to stock our shelter with a good short wave CB radio and a 40-80 meter amateur radio. The short wave CBs work on short distances and only along  ‘line of site’,  but they will provide localized information, which could be of critical importance.  It is likely that relay stations over ground would be destroyed during a catastrophe making 2 meter radio units unusable.  Hence the recommendation of additional amateur 40 to 80 meter radios. These wont require working relay stations. It might be a good idea to become a licensed amateur radio operator as a preparatory measure for such a calamity.

 CB Radio 

Do some serious research before you purchase your radio units. The units shown above are indicative and may not be your best choice. You will have to use your CB or ham radio very carefully. They use very little power then they are receiving, but use a lot more during transmission. If you have others who plan to move into shelters, it makes sense to use the same frequencies for your radio transmissions.


Remember to have a set of charged batteries in your shelter at all times. When disaster strikes there is likely to be a period of a week or two when you may not be able to venture outside. During those times your charged batteries plus the charge battery of the solar generator will be your best bet.  Once the immediate danger is past, we can recharge the batteries as well as the solar generator using the solar panels.

The best batteries to use are the 12 Volt variety as they are inexpensive and widely available. They can be daisy chained easily to increase voltage (daisy chained in serial) or ampere hours of capacity (daisy chained in paralell). An additional benefit of 12-volt batteries is that their chargers and inverters are reasonably priced and dependable.

Since shelters are underground and poorly ventilated it is preferable to use the  6-volt golf cart batteries or the 6-volt ‘gel-cell’ batteries. Car batteries should must not be used in shelters, as they need ventilation. Two of these batteries will be wired in series to get 12 volt output.

 Gel Cell Battery   Golf Cart Battery

Gel-cell batteries have excellent recovery characteristics and can be deep-cycled many more times than lead-acid batteries. Of course they are two to three times more expensive. Since they don’t outgas and have a much longer life expectancy, they make a better choice for the underground shelter.  Gel-cell batteries require a special charger like the IOTA DLS 55 or DLS 75 charger.

The battery system in your solar generator and your back up batteries are  your only source of energy. Monitor them and keep them charged regularly. It would be catastrophic if and when you need to go to the shelter to find out you have damaged batteries.

Solar Panels

The panels will be used to recharge the batteries. Preferably they should be stored in the shelter (wrap them in Aluminum foil) for protection from the blast and EMP.  Once the situation is under control outside and the effects of the danger have passed away they can be taken out for use.

As discussed earlier it  is critical to have your batteries topped up in the shelter. A good idea maybe to have one of your solar panel as a sacrificial panel which is outside at all times. It can charge your batteries – both on the Goal Zero 1250 solar generator as well as the back up gel cell/golf cart batteries.  Keep at least 3 more solar panels inside the shelter to protect them from the EMP.


Finally – Don’t spend your stored battery powers amp hours unwisely. Recirculate your air system by hand and eat as much packaged and pre cooked stuff as possible. Your goal initially is survival and  your battery power should be used only for lighting and radio communication. Best of Luck with your shelter.

There is a lot more you can do with solar. Check out these articles. Thank you for visiting MySolarHome.us.

Last update on 2018-10-21 / Affiliate links / Images from Amazon Product Advertising API

Author: Michael Bennet

A Solar energy professional with ten years of marketing and installation experience. Avid and passionate about the adoption of solar and related technologies in all homes. Blogs about all things solar and sustainable at MySolarHome.us.

2 thoughts on “Goal Zero Yeti 1250 : A Workhorse Solar Generator”

Comments are closed.