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BESS Enclosures Built for Performance and Protection

To keep your power equipment safe and running its best, you've got to do more than put a box around the batteries. You need to invest in a Battery Energy Storage System (BESS) from Bison ProFab to protect your setup from weather, dust, and anything else that could throw it off balance. We design and build custom enclosures to your exact setup to protect your equipment and keep you up and running.

Why a BESS Enclosure Is a Must-Have

Battery energy storage is a serious investment, and it only performs as well as the protection around it. A good enclosure is the first line of defense against rain, heat, dust, or even curious hands that shouldn't be near high-voltage equipment. That's why choosing the right setup is so important.

Whether you need an outdoor battery cabinet for a tight site, harsh weather, or a full-scale electrical enclosure, the goal is the same: keeping your system safe, reliable, and compliant. A properly designed outdoor battery enclosure helps your equipment last longer, run more efficiently, and meet the standards your industry demands.

BESS Container vs. BESS Enclosure

Let's clear up a common mix-up: a BESS container isn't the same thing as a BESS enclosure. Containers are more like compact, standardized shipping units — easy to transport, quick to deploy, and often used for temporary or mobile energy storage needs. A prefabricated BESS enclosure, on the other hand, is closer to a small building. These enclosures are designed and built around your system's exact requirements, then delivered to your site ready to go. They're ideal for larger capacity projects like industrial energy storage, microgrids, or long-term installations where customization, durability, and compliance really matter.

Our Custom Metal Fabrication Capabilities

Every battery project looks a little different, which is why there isn't one true solution. At Bison ProFab, nearly all of the enclosures we build are custom, designed around the layout, capacity, and conditions you're working with. Whether you need something compact to house just a few battery storage units or a large battery storage container-style buildout for utility-scale energy storage, we've got the tools and experience to make it happen.

Our shop is equipped with advanced fabrication technology such as laser cutters, robotic welders, and automated press brakes, paired with a team that knows how to think outside the box (and build a better one). That means tighter tolerances, faster turnaround, and the flexibility to add the features you actually need, from cooling systems to enclosure accessories.

Common customizations include:

  • Cooling and HVAC systems to keep batteries within safe operating temperatures
  • Cable access points, busbars, and mounting panels for smooth integration
  • Shelving, racking, and partitions to optimize internal layouts
  • Lighting, sensors, and monitoring systems for safer operation
  • Specialized finishes and coatings for corrosion or weather resistance


Of course, if you don't need something fully custom, at Bison PreFab we also offer a Stock Battery Box Enclosure that’s ready to go for smaller projects.

Industries & Applications

The demand for reliable energy storage is growing fast, and every industry has its own set of challenges. That's why our BESS enclosures are designed with flexibility in mind. We've built solutions for everything from utility companies balancing peak demand, to solar and wind projects storing clean energy, to commercial facilities that just can't afford downtime.

If you're working with a complex BESS electrical system, the enclosure is part of the system itself. Proper design makes installation smoother, protects your investment, and keeps you compliant with the standards your industry requires. That's why battery energy storage system suppliers and project developers come to us: they know they'll get an enclosure that's engineered to work seamlessly with their equipment and built to last in the field.

Whether it's powering a microgrid, supporting a data center, or keeping critical infrastructure online, our enclosures are made to fit the job.

Bison ProFab Has You Covered

When it's time to protect your energy storage system, you need a partner who understands the stakes. At Bison ProFab, we've been building custom enclosures for decades, and about 95% of what leaves our shop is designed around a customer's exact specs. That means we're building something that works for you.

Our team takes pride in the details: clean welds, tight tolerances, quick turnaround, and a commitment to quality that shows in every finished product. We're equipped with the latest fabrication technology, but it's our people who make the difference. From engineering through production, we know how to solve problems and deliver enclosures that perform.

It's why BESS manufacturers, system integrators, and developers trust us with their projects. They know they'll get a durable, compliant, and reliable solution backed by a team that stands behind its work.

Custom BESS Enclosures Built to Protect What Powers You

Your batteries are the heart of your system — but without the right protection, they're vulnerable. Let's make sure you're getting BESS enclosures that are built to last, perform, and give you peace of mind. Whether you need a compact outdoor unit or a full-scale custom build, the Bison ProFab team is ready to help.

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Both the customer and I were very impressed with the quality of the boxes.

Mike, I wanted to say THANK YOU to the whole Bison Profab team including yourself on this project! Both the customer and I were very impressed with the quality of the boxes. Again, THANK YOU!

Jesse Harris Snap-on Industrial
Professional, exceptional quality and delivers on time.

Doing Business with Bison for 20 years says everything. Professional, exceptional quality and delivers on time.

Shelly Anthony Paradigm Traffic Systems Inc. View All Testimonials
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