Enercept

Enercept Enercept is the builders' choice for structural insulated panels (SIPS). By 1982, Enercept was incorporated and built a huge, 26,000 sq. ft. Mike S.

Enercept, started as a subsidiary of Energy Industries in 1981, with the vision of crafting a future in manufacturing structural insulated panels, founder Harold Henley dared it all. facility of its own design and products in Watertown, SD. Enercept has been manufacturing SIPs since 1981. Enercept designs custom Structural Insulated Panels (SIPs) to exactly fit your timber frame. Whether you're bu

ilding a full timber frame or a hybrid (partial timber frame), enclosing timber frames with SIPs is the perfect fit for your project. Our SIPs are high performance building panels made with an expanded polystyrene (EPS) rigid foam core sandwiched between two structural skins of 7/16" oriented strand board (OSB) used in floors, walls and roofs. Enercept's standard 6" SIP wall has an R-24.87 value and we additionally offer R-40 or R-50 panels for your roof. Each and every panel is custom manufactured to fit on your timber frame. Each panel comes with our standard features including:

Enercept installs electrical chases at the factory and has developed an easy to follow electrical guide for your electrician. Enercept’s unique 4-foot line panel press can accommodate panel core thickness from 1″ to 16″. Enercept is known in the SIP industry for our ability to produce panels for even the most difficult designs. We employ an experienced drafting team to assist you with SIP design questions. Enercept can provide an on-site training technician for first-time builders to ensure quality construction and minimize the learning curve. A detailed Construction Guide, Electrical Guide and durable panel layouts are issued with every project. Not only have we been in business for over 35 years, we were also the original holders of the patents for our insulated connecting posts, which virtually eliminate thermal bridging, Our patented design means faster, easier, stronger construction. Enercept panels have been used internationally with projects in Antarctica, Spain, Japan, Switzerland, France, Mexico and Canada. The largest project being the recently completed International Science Station located at the South Pole. In 2012 Enercept added an 8’wide (jumbo) panel line. Enercept is a proud member of The Structural Insulated Panel Association (SIPA), the National Association of Home Builders (NAHB) and the Timber Framers Guild

Testimonials:

"I've been using Enercept panels for the roof and gables of the log homes I build for many years. The people at Enercept are friendly, knowledgeable and always helpful. The panels are amazingly easy and fast to assemble because they come completely fabricated. The window openings and complex roof angle cuts are done at the factory - we don't have to cut any panels on site, they just slip together." "I would rate the insulation qualities of our Enercept home 100% better than any other house we have lived in. Even the floors in the basement, which are constructed of Enercept panels, are warm to the touch, even with the coldest temperatures outside. One of the major factors in deciding to build an Enercept home was the energy efficiency. After living in our home over the winter, I can say with certainty that the decision was a very wise one. I would recommend building an Enercept home to anyone that asks me." L Andera​

"Delivery was coordinated in a very thoughtful way to reduce costs and worked out beyond what one would normally expect. The panels were constructed very well and were precise. Thanks for the opportunity of dealing with a great company!"
Dave K.​

09/04/2026
09/03/2026

Ever wonder how Enercept's structural insulated panels come together? 👀

We custom-fabricate each panel by cutting our materials ahead of time and putting them through our fabrication and lamination process. The result? A high-quality panel that's made to fit together smoothly and efficiently at the building site.

Follow along as we show you how it all comes together! 🏗️

09/02/2026

If you’re dreaming about your next build, we’d love to be the ones to help turn that dream into reality.💙

🎊A BIG THANK YOU! 🎊We'd like to give a huge thank you to Adam Lauseng & Commercial BuildingMaintenance & Restoration for...
09/01/2026

🎊A BIG THANK YOU! 🎊

We'd like to give a huge thank you to Adam Lauseng & Commercial Building
Maintenance & Restoration for supporting us and for providing such great service! We truly appreciate your generosity and support.💙

If you're looking for commercial cleaning services, be sure to check them out! They offer contract cleaning, floor stripping & waxing, carpet cleaning, deep cleaning, and more.

Thank you again for supporting us-we appreciate you! ✨


Get to know our next Employee Spotlight Leigh!
09/01/2026

Get to know our next Employee Spotlight Leigh!

Quality you can trust. 🏠At Enercept, we take quality seriously. Our products undergo internal testing to ensure they mee...
08/31/2026

Quality you can trust. 🏠

At Enercept, we take quality seriously. Our products undergo internal testing to ensure they meet the high standards and expectations our customers count on.

Tested. Trusted. Built to perform.

📱 FOLLOW ENERCEPT!Want to stay up to date with what’s happening at Enercept? Follow us on social media! 💙👉 Instagram:  —...
08/31/2026

📱 FOLLOW ENERCEPT!

Want to stay up to date with what’s happening at Enercept? Follow us on social media! 💙

👉 Instagram: — copy link below to follow us!⁠
https://www.instagram.com/enercept1981/

👉 TikTok: .watertown — copy link below to follow us!⁠
https://www.tiktok.com/.watertown/

Thank you for your support! We appreciate you! 💙

08/27/2026

Another project on its way to becoming something great! 🏡💙 Thank you for choosing us and trusting our team with your project!

08/26/2026

So we brought the panels. 😏 🏗️

🌟 Next EMPLOYEE SPOTLIGHT: Lisa🌟Thank you, Lisa, we appreciate all that you do and are happy to have you on our team! 👏 ...
08/26/2026

🌟 Next EMPLOYEE SPOTLIGHT: Lisa🌟

Thank you, Lisa, we appreciate all that you do and are happy to have you on our team! 👏


Address

3100 9th Avenue SE
Watertown, SD
57201

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 12pm

Telephone

+16058822222

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