What Entercept does

Enercept is a privately held U.S. manufacturer of custom structural insulated panels (SIPs), founded in 1981 by Harold Henley in Watertown, South Dakota, where it operates a 26,000-square-foot production facility originally built using its own SIPs in 1982. The company designs and fabricates EPS (expanded polystyrene) foam core panels sandwiched between oriented strand board (OSB) skins, manufactured to R-14 through R-50 specifications and delivered as Ready-To-Assemble (RTA) building envelope packages covering walls, roofs, foundations, basements, and floors.

The company's technology platform centers on proprietary Insulated Connecting Posts that maintain continuous foam insulation through panel-to-panel connections, virtually eliminating thermal bridging, and on factory-installed electrical chases pre-marked on interior sheathing, for which Enercept was the first SIP manufacturer to obtain a patent. An in-house CAD drafting team produces project-specific panel layouts, and the company supports builders with virtual installation assistance and its annual Enercept University training program. Enercept holds ICC-ES, IBC, IRC, IECC, and ANSI compliance certifications, with licensed engineers available in all 50 states, and its products are compatible with LEED, ENERGY STAR, and DOE Zero Energy Ready Home programs.

Enercept generates revenue primarily through one-time custom manufacturing sales of SIP packages priced on a per-project basis, supplemented by engineering and drafting services billed into the project workflow with milestone-based down payments. The go-to-market is sales-led via four regional sales managers covering distinct U.S. territories (including Alaska and Hawaii), supported by inbound website estimate requests and participation in industry trade shows. Customer segments span residential custom home builders, commercial developers, agricultural operators, timber framers, and licensed architects and designers, with named projects ranging from multi-unit student housing and veterinary clinics to hospitality additions and remote agricultural offices.

Name

Entercept

Legal name

Enercept

Website

https://enercept.com

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

11–50 employees

Short description

Enercept is a Watertown, South Dakota-based manufacturer of custom structural insulated panels (SIPs) for residential, commercial, agricultural, and timber frame construction. Founded in 1981, the company serves builders, architects, and homeowners across North America with patented, factory-engineered panel packages.

Ownership category

akta.pro rank

Product category

Structural Insulated Panels

NAICS

Laminated Plastics Plate, Sheet (except Packaging), and Shape Manufacturing (326130), Veneer, Plywood, and Engineered Wood Product Manufacturing (3212)

akta.pro primary industry

Structural Insulated Panels (SIP) & Foam-Core Composite Panel Manufacturing (IMANAIAK)

Keywords

• Structural insulated panels
• SIP manufacturing
• Building envelope systems
• Energy-efficient construction
• Prefab wall panels

Headquarters

HQ city

Watertown

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Custom SIP Panel Manufacturing and Sales: Design, manufacture, and sale of custom structural insulated panels (SIPs) for walls, roofs, foundations, and floors. Panels are custom-engineered per building plans and sold as complete Ready-To-Assemble packages. Revenue is generated through one-time product sales based on project scope and panel specifications.
2. Engineering and Drafting Services: In-house drafting team provides CAD-based panel layout drawings and design consultations as part of the SIP package process. Down payments and production payments collected at project milestones.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Enercept designs, manufactures, and sells custom structural insulated panels (SIPs) consisting of an EPS foam core sandwiched between two OSB skins, fabricated to project-specific dimensions for walls, roofs, foundations, and floors. Panels are delivered as Ready-To-Assemble (RTA) packages complete with pre-cut openings, headers, wiring chases, plate material, sealant, seam tape, SIP screws, and construction drawings. The company also provides in-house CAD drafting, engineering consultations, and project management from its Watertown, SD facility.

Product overview

Enercept offers a complete structural insulated panel (SIP) building system. Their core products include SIP wall panels, roof panels, foundation/basement panels, and floor panels—all featuring an EPS (expanded polystyrene) foam core sandwiched between oriented strand board (OSB) skins. The company provides Ready-To-Assemble (RTA) SIP packages that combine framing, insulation, and sheathing in one step, along with their proprietary Patented Insulated Connector Posts that eliminate thermal bridging. Enercept's SIP systems serve residential, commercial, agricultural, and industrial applications, and are backed by drafting, engineering, and installation support services. The company holds the original patent for their insulated panel connector design.

Differentiator

Problem solved

Functional benefit

Products and services

• SIP Wall Panels High-performance structural insulated wall panels combining an EPS foam core between OSB skins, with pre-cut openings, headers, and factory-installed electrical chases built in for faster installation by builders and contractors.
• SIP Roof Panels Custom insulated roof panels designed for structural strength and thermal performance with factory-cut ridge beams, headers, and wiring chases, enabling quick installation on residential, commercial, and agricultural structures.
• SIP Foundation & Basement Panels Pre-built basement and foundation SIP systems providing airtight, energy-efficient below-grade construction with factory-cut window openings and electrical chases for residential and commercial projects.
• SIP Floor Panels Floor panels with solid EPS core and intermediate structural members, custom-fabricated for various spans and load requirements with high R-values for use above foundations and basements.
• Ready-To-Assemble (RTA) SIP Packages Complete panelized building envelope systems delivered as ready-to-assemble packages including custom wall and roof panels, plate materials, sealant, seam tape, SIP screws, construction drawings, and installation guides for builders and homeowners.
• Engineering and Drafting Services In-house CAD-based drafting and engineering services providing panel layout drawings, design consultations, and structural engineering support as part of the custom SIP package process, supported by licensed engineers in all 50 states.

Quantifiable outcome

• Labor costs reduced by up to 55%
• +3 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Structural Insulated Panel Association (SIPA)coreStrategic or Co-development PartnerProud member of SIPA, the industry association for structural insulated panel manufacturers. Supports building excellence awards and industry standards development.
• National Association of Home Builders (NAHB)coreStrategic or Co-development PartnerProud member of NAHB, connecting with home building professionals and industry standards.
• Timber Framers GuildcoreStrategic or Co-development PartnerLong-time partner and Visionary Partner of the Timber Framers Guild, an organization devoted to honoring and advancing the craft of timber framing. Provides SIP panels specifically engineered to wrap around timber frame structures.
• USGBC (U.S. Green Building Council)minorStrategic or Co-development PartnerEnercept teams up with USGBC to support green building initiatives and LEED certification projects.

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Premier Building Systems: Manufacturer of structural insulated panels (R-Control brand) for residential and commercial construction. Directly competes with Enercept in custom SIP packages for walls and roofs across the U.S.
• Insulspan: One of the longest-operating SIP manufacturers in North America, producing EPS-core SIPs for residential, commercial, and agricultural buildings. Competes head-to-head with Enercept on custom-engineered SIP packages.
• Murus Company: Pure-play SIP manufacturer offering wall, roof, and floor panels across the eastern U.S. Overlaps with Enercept in custom prefabricated panelized building envelopes for residential and light commercial projects.
• Extreme Panel Technologies: Manufacturer of structural insulated panels for residential, commercial, and agricultural construction. Direct competitor in custom-engineered EPS-core SIPs with comparable Ready-To-Assemble delivery model.
• Foam Laminates of Vermont: SIP manufacturer producing custom-cut EPS-core structural panels for residential and commercial builders in the Northeast. Comparable product offering and custom-engineering sales motion.
• Winter Panel Systems: Custom SIP manufacturer serving New England and the broader U.S. with wall and roof panels. Direct overlap with Enercept's custom panelized envelope business.
• Fisher SIPs: Custom SIP manufacturer producing prefabricated wall and roof panels for residential and light commercial construction. Competes with Enercept on customization and project-specific engineering.
• ACME Panel: SIP manufacturer serving the Western U.S. with custom wall and roof panels. Comparable product offering and builder-focused sales motion.

Broad incumbents

• Kingspan Group: Global building envelope manufacturer with a large portfolio of insulated panels and rigid foam insulation. Competes with Enercept at the high-performance envelope level but across a much broader product range and geographic footprint.
• Atlas Roofing Corporation: Large manufacturer of polyiso and EPS rigid foam insulation and roof panels. Overlaps with Enercept on the foam-core side of SIPs and serves as a broader incumbent in building envelope materials.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/enerceptinc
• Facebookfacebook.com/enercept-152997693427
• LinkedInlinkedin.com/company/enercept-inc-

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Entercept