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Michigan Milk Producers Association

Published in Electrical Products & Solutions. On a recent installation at the Ovid, Michigan processing plant of the Michigan Milk Producers Association the standby power generation system supplier, W.W. Williams of Dearborn, Michigan…

W.W.Williams MTU GenSets

In asociation with W.W.Williams, as part of a government project, Hennig helped supply the enclosure systems to supply 9.75 megawatts of backup power. Learn more to see how W.W.Williams setup these sytems for the Blue Grass Chemical Agent-Destruction Pilot Plant in Richmond, Kentucky…

Broken Arrow Water Treatment Plant

Hennig custom enclosures and fuel tanks provided for three Cummins 2MW generators at Broken Arrow, Oklahoma project for Southern Plains, LLC. The project began in early 2012 with the bid for the standby power system awarded to Cummins Southern Plains LLC, Tulsa, for the parent company based in…

Global Excellence in Machine Protection

Hennig Generator Enclosures are a part of a worldwide company that excels in global excellence in all types of machine protection. Find out more on how we team up with our global partners.





Along with manufacturing capability, HES offers more than a half-century of combined design experience, with engineers using CAD 3-D modeling programs to develop virtual models of enclosures before they are manufactured. Let Hennig Enclosure Systems be your exclusive source for all your custom electrical generator packaging needs. Hennig Enclosure System’s engineering & manufacturing expertise, customer committment, quality, and service are just some of the reasons to make Hennig your sole supplier of enclosures and fuel tanks.


With that capability now under one roof, Hennig has taken the final step of establishing HES as a separate business unit. “We felt we could focus on our customer demands more clearly as a separate division.”

Along with the enclosure, HES also offers a range of five types of UL 142-approved fuel tanks, including secondary containment tanks, open and closed-top dikes, freestanding day tanks and sub-base day tanks. All tanks come standard with a minimum 110% containment area and a range of standard features, including rupture basin alarms, electrical stub-up areas, fuel level gauges and senders, vents, manual locking fill caps and 0.5 in. NPT drain plugs.


Hennig, located in Rockford & Machesney Park, Illinois, is part of a worldwide network of outstanding company’s organized under the Goellner, Inc. For more information on our company, please feel free to browse through our website, and don’t forget to check out what Hennig is doing worldwide. Have a question? Just give us a call… we’d be glad to hear from you..