About Us

Energy Panel Structures was established in 1981 in Albert Lea, MN.  EPS originally began to manufacture insulated wall panels for the agricultural market. Since that time, EPS has diversified into the commercial/industrial markets.  After three expansions the company moved in 1988 to Graettinger, IA to a new 40,000 square foot plant designed specifically for the manufacturing of insulated panels.  Since the move to Graettinger, EPS has expanded multiple times, to a total of over 175,000 square feet of manufacturing and over 50,000 square feet of warehouse space.  Within this we manufacture SIP insulated panels of many sizes and thicknesses, roll-form steel panels in multiple configurations, trim manufacturing, nail Laminated columns, walk door construction, pre-assembled component walls, roof truss, and floor truss manufacturing.  In total, we operate on 20 acres, including 17,000 of office space.

In addition to our Iowa facility, we operate a branch manufacturing facility in Perryville, Missouri.  This location boasts many of the same manufactured products with the exception of SIP panels.  This location encompasses 100,000 square feet of manufacturing, storage, and office. 

EPS is 100% Employee Owned and 100% Quality Committed

  • Structural insulated panel (Solid Core) buildings feature foam core wall panels and wood truss systems for small and medium-sized agricultural, commercial, and industrial buildings
  • Post frame packages for commercial and agricultural use
  • Commercial industrial building packages and panelized products
  • Complete dairy facilities
  • Equestrian arenas and complete stable packages
  • Energy-Lok steel-faced EPS foam core panels can be utilized in Steel framed buildings
  • Insulated panels for both new construction and retrofit projects
  • Cold storage panel systems for coolers or freezers
  • New homes for single- and multi-family living

Energy Panel Structures is a wholly owned subsidiary of the MacArthur Company of St. Paul, MN.

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Our EPS specialty manufactured products include:

  • DURA DOORS: Durable insulated walk doors - one of the best around
  • Sliding vent doors
  • Thin wall division walls
  • Pop-up ceiling systems
Energy Panel Structures will supply the complete building package or individual panels. Most of our sales are of complete packages. Energy Panel Structures can fabricate and/or manufacture all components necessary for your building packages.