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Goal Zero
Boulder 100 Briefcase

4.695652173913044 out of 5 stars
23 Reviews
Color:One Color



Why We Like The Boulder 100 Briefcase

Whether we're escaping society by traveling into the wilderness, road tripping the country in our converted van, or prepping our house for when the grid goes down, the Goal Zero Boulder 100 Briefcase offers us a sturdy, foldable design for convenient travel combined with the ability to harness up to 100 watts of energy directly from the sun.

This foldable solar panel is comprised of two Boulder 50 solar panels attached with a hinge, so you can easily slide it into the provided carrying case before embarking off the grid. The sturdy aluminum frame and Z Brackets compatibility give you the ability to attach this solar panel to the roof of your humble abode, camper, or van. It's also chainable with older Goal Zero Boulder 15/30 Solar Panels, as well as with the Boulder 90 Solar Panel (with the use of an MC4 to 8-millimeter adapter). This allows you to harness even greater energy from the sun, maximizing the energy going into your Goal Zero power pack or portable power station.


  • Folding 100-watt solar panel with included zippered case
  • Comprised of two Boulder 50 solar panels joined by a hinge
  • Sturdy construction with tempered glass and aluminum frame
  • Charges any Goal Zero Power Pack or Station for off-grid power
  • Z-Bracket compatibility for mounting to roof of vehicle or house
  • Chainable with older Boulder 15/30 panels and Boulder 90 panel
  • 8-millimeter output for chaining and power pack/station charging
  • Integrated kickstand lets you prop it up wherever camp is
  • Item #GZR003F
monocrystalline cell type, tempered glass, aluminum frame
Output Capacity
Power Output
yes, chainable with Goal Zero Boulder 15/30 solar panels, as well as Boulder 90 solar panel (with MC4 to 8mm adapter)
[unfolded dimensions] 40 x 26.75 x 1.75in
Claimed Weight
25lb 14oz
Manufacturer Warranty
1 year
camping, emergency power, weekend camping

Overall Rating

4.5 based on 23 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 5 reviews
5 Stars - 17 reviews

What do you think about this product?


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5 out of 5 stars

June 15, 2023

Built like a tank

Like all Gold Zero products the Boulder 100 is built with quality in mind. The downside is you have to be a bodybuilder to carry it.


Originally reviewed on

5 out of 5 stars

July 5, 2022

Perfect 100watt panel with a sturdy build.

This solar panel is a no worry, durable panel. I don’t hesitate to throw it out in parking lots and juice up while parked.

user image

Originally reviewed on

5 out of 5 stars

March 19, 2022

Boulder 100 Solar Panel Briefcase

User Friendly, Quality Product, Works well with Goal Zero Solar Generators. Would recommend Goal Zero Products to anyone.

Colorado Kid

Originally reviewed on

5 out of 5 stars

January 15, 2022

Very pleased with the output.

Purchased a Yeti 500X a few months back and decided to get a panel to go with it, mostly for outages. Used the Boulder 100 for the first time today. Cold (10 F) winter day about 10:30am and it was putting out 85 watts. It's sunny but the sun is very low in the sky so I wasn't expecting that amount of power. Very pleased. It's a bit heavy so not taking it backpacking but is very solid and seems well built.


Originally reviewed on

5 out of 5 stars

November 15, 2021

Easy to use

Finally set off on our can life adventure! Found the Boulder briefcase easy to set up and pack away. Seems to charge our Goal Zero generator fairly well. Just have to adjust to the suns angle to get the best charge.

user image
Squatch Fall tour 2021

Originally reviewed on

5 out of 5 stars

November 15, 2021

Off-grid life

The perfect set up for our Yeti500 battery bank. Convenient and manageable for a couple living off-grid.


Originally reviewed on

5 out of 5 stars

November 8, 2021

Sturdy, Semi Portable, Short Cord

This is my first solar panel so I don't have much to compare this to. It's very study, dropped it out of the car a few times and kids have tumbled over it. It's fine for car camping and home use but wouldn't want this overlanding or even for a basecamp trek. Cord is very short, I guess to be part of a series of panels on an extension cord to get further from camp.


Originally reviewed on

5 out of 5 stars

November 5, 2021

Easy carry.

Haven't use the panel yet, but my brother says they work great.


Originally reviewed on

5 out of 5 stars

July 11, 2020

boulder 100 briefcase after 2 years

I use a yeti 1400 lithium with MPPT and a pair of boulder 100 briefcase panels primarily to power my small travel trailer off grid camping and at motorcycle trial events. I'm very pleased with the performance of this setup. My experience is that on a clear, sunny day the pair of 100 boulders will charge the yeti at a rate of 90 to 150+ watts/hr. I actually have seen over 180. I highly recommend these products.


Originally reviewed on

4 out of 5 stars

April 8, 2019

Looks good, concern with durability

I bought the Boulder 100 and received it today, yet to test it as it is raining. This is going in my overland vehicle, a '91 Jeep Cherokee to power my Yeti 400. First impressions are that it appears well built, hinges feel sturdy when opening the panels and the handle is comfortable making it easy to lift. My first concern is that the two clamps are quite petite and I would question their durability. The second concern is that the panels when folded have the glass out, and the case does not offer much in the way of protection. To me, this had the potential to easily damage the panel is transported or if knocked over. Will follow up once I get a chance to hook them up to my Yeti and test them fully.

The Bald Man

Originally reviewed on