What Enercalc does

ENERCALC, LLC is a US-based structural engineering calculation software company founded in 1982 and headquartered in Missoula, Montana, operating as a 100% remote organization of approximately 20+ staff across four countries. Its core product, the ENERCALC Structural Engineering Library (SEL), is a 64-module calculation suite covering beams, columns, foundations, walls, earth retention, wind, snow, seismic, and 3D finite element analysis across steel, wood, concrete, masonry, and composite materials, supported by built-in material/section databases and a project-based organization system. The platform is available as a Windows desktop application and as a cloud offering on AWS, with ENERCALC for Revit providing a bidirectional add-in for Autodesk Revit (Revit 2024-2027) under an Authorized Developer relationship.

The company monetizes via subscription, with ENERCALC SEL priced at $1,699/year or $199/month for 2 seats and ENERCALC for Revit at $899/year or $89/month, supplemented by a $499/year SEL-EARTH subset for retaining walls, free academic licenses to 40+ university departments, and free plan check licenses for governmental review agencies. Eighty percent of subscribers choose annual billing, pricing is non-negotiable across all customer sizes, and distribution is primarily self-serve through the company website with a 30-day free trial. The customer base spans more than 6,000 active subscriber firms and 64,000+ engineers across all 50 US states and 30+ countries, including 20 of the top 25 ENR 2026 Design Firms, with an average customer tenure of 17 years. ENERCALC was acquired by Merit Holdings in 2022 under a permanent-hold ownership philosophy that retained all staff, and the company maintains an unusually high-velocity development cadence including an AI documentation assistant (Jack) launched in 2023.

Name

Enercalc

Legal name

ENERCALC, LLC

Website

https://enercalc.com

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

1–10 employees

Short description

ENERCALC develops the 64-module Structural Engineering Library (SEL) software for component-level structural calculations in steel, wood, concrete, masonry, and composite, plus an Autodesk Revit add-in, serving over 6,000 engineering firms and 64,000+ engineers globally.

Ownership category

akta.pro rank

Headquarters

HQ city

Bigfork

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. ENERCALC SEL Subscription: Annual or monthly subscription for structural engineering calculation software with 64 modules. Includes 2 seats per subscription. Additional seats available at $1150/year or $119/month. All updates and technical support from PEs/SEs included.
2. SEL-EARTH Subscription: Annual subscription for 7 earth-retention structure/retaining wall modules only. Includes 2 seats. Additional seats at $299/year.
3. ENERCALC for Revit Subscription: Annual or monthly subscription for Revit add-in. Requires active ENERCALC SEL subscription. $899/year or $89/month includes 2 seats. Additional seats at same rate. Not available on cloud platform.
4. Academic Licenses: Free or discounted licenses for university professors and instructors for academic terms. Students can use licenses during class term.
5. Plan Check Licenses: Free annual licenses for governmental plan checking agencies performing structural calculation reviews. Cannot be used for commercial calculations.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels9 records

Core offering

ENERCALC develops and licenses structural engineering calculation software (ENERCALC SEL) that runs as a Windows desktop application or via its cloud platform. The core product is a 64-module suite that performs component-level analysis and design for beams, columns, foundations, walls, earth-retention structures, wind, snow, and seismic loads across steel, wood, concrete, masonry, and composite materials, with project-based organization, built-in material databases, and PE-sealed reporting. A companion ENERCALC for Revit add-in delivers bidirectional integration with Autodesk Revit, while a SEL-EARTH subset offers 7 earth-retention modules as a standalone subscription.

Product overview

ENERCALC offers a platform-plus-modules architecture centered on ENERCALC SEL (Structural Engineering Library), a comprehensive structural engineering calculation software suite. The core platform provides 64 calculation modules covering beams, columns, foundations, walls, earth retention, wind, snow, and seismic analysis across steel, wood, concrete, masonry, and composite materials. ENERCALC for Revit (EFR) is a companion add-in that integrates with Autodesk Revit for bidirectional real-time synchronization. SEL-EARTH provides a focused subset of 7 earth retention modules. The company also offers cloud-based access, built-in material databases, project management tools, and an AI chatbot called Jack for documentation assistance.

Differentiator

Problem solved

Functional benefit

Brands

• ENERCALC SEL: The primary structural engineering calculation software with 64 modules covering beams, columns, foundations, walls, earth retention, wind, snow, seismic, and analysis for steel, wood, concrete, masonry, and composite materials.
• ENERCALC for Revit
• SEL-EARTH

Products and services

• ENERCALC SEL (Structural Engineering Library) ENERCALC SEL is the company's primary structural engineering calculation software, providing 64 modules for component-level design (beams, columns, foundations, walls, earth retention, wind, snow, seismic, 3D FEM) across steel, wood, concrete, masonry, and composite materials. It is sold as an annual or monthly subscription and is targeted at structural engineering firms performing repetitive daily calculations for low-rise buildings and miscellaneous components.
• ENERCALC for Revit (EFR) ENERCALC for Revit is an Autodesk Revit add-in (ENERCALC is an Autodesk Authorized Developer) that provides bidirectional real-time synchronization between ENERCALC modules (Steel Beam, Steel Column, General Footing, Composite Steel Beam, Wood Beam) and the Revit model. Engineers select Revit elements, design in ENERCALC, and results automatically update the Revit model without import/export. Sold as an annual or monthly subscription add-on for structural engineers working in BIM workflows.
• SEL-EARTH SEL-EARTH is a standalone annual subscription package that contains seven earth-retention structure modules: Cantilevered Retaining Wall, Restrained Retaining Wall, Tapered Stem Retaining Wall, Gravity Retaining Wall, Gabion Retaining Wall, Soldier Pile Retaining Wall, and Segmental Retaining Wall. It is targeted at engineers who only need retaining wall design capability without the full 64-module suite.
• ENERCALC Cloud ENERCALC Cloud is the cloud-delivery channel for the ENERCALC product, included with subscription. It provides HTML5 access from Windows, Mac, Linux, and mobile devices, with project files stored on AWS S3 featuring automatic versioning and mirrored backups, offering equivalent functionality to the installed software.
• ENERCALC 3D FEM ENERCALC 3D FEM is a full 3D finite element analysis module within the SEL suite, providing non-linear analysis and design support for steel and concrete structures. It is licensed as one of the 64 modules included with an ENERCALC SEL subscription.

Quantifiable outcome

• 832,812 average monthly user-days in 2025
• +5 more outcomes

Named customers7 records

Segments9 records

Ideal customer profiles9 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability2 records

Feature9 records

Partnerships

Two partnerships are on record, tiered core and minor.

• AutodeskcoreTechnology or IntegrationENERCALC is an Autodesk Authorized Developer. ENERCALC for Revit provides bidirectional integration with Autodesk Revit using the Revit API. Users can click Revit elements to build calculations, design components, and automatically update Revit models. Supports Revit 2024-2027.
• QnectminorGTM or Marketing PartnerQnect joined ENERCALC's TV donation initiative at NASCC 2024, providing a third TV to Refuge for Women alongside ENERCALC's two donated TVs.

Scale indicators8 records

Recent moves7 records

Expansion highlights8 records

Broad incumbents

• Autodesk: Autodesk's Revit and structural analysis offerings (including discontinued Robot Structural Analysis) underpin many ENERCALC customer workflows. ENERCALC for Revit is built on the Revit API under Autodesk's Authorized Developer program, making Autodesk both a partner and a broad incumbent competitor.
• Altair Engineering: Altair offers structural simulation and optimization software (including legacy HyperWorks/OptiStruct capabilities) used alongside other design tools. It is a broad incumbent in the structural and mechanical simulation space adjacent to ENERCALC's analysis and design modules.
• Trimble Tekla: Tekla Structures provides BIM-level structural engineering software used in design and detailing of steel, concrete, and timber structures. It is a broad incumbent that competes with ENERCALC for the structural engineer's design and documentation workflow.

Emerging players

• ClearCalcs: ClearCalcs provides cloud-based structural calculation tools for wood, steel, and concrete members, aimed at small and mid-size engineering firms. It overlaps ENERCALC's component-level calculations and competes on UX and browser-native delivery.

Direct peers

• Dlubal Software: Dlubal's RFEM and RSTAB provide 3D structural FEA and design for beams, columns, frames, and connections. It competes directly with ENERCALC's analysis and design modules across the same structural engineering use cases.
• Prokon Software Consultants: Prokon offers a suite of structural analysis and design modules (beams, columns, foundations, frames) widely used by small and mid-size engineering firms. It directly competes with ENERCALC's component-level SEL modules for everyday structural design work.
• SCIA (Nemetschek Group): SCIA Engineer delivers structural analysis and design software for steel, concrete, timber, and aluminum, serving the same engineering customer base as ENERCALC. Like ENERCALC, it is used for component-level checks alongside larger global analysis tools.
• RISA Technologies: RISA sells RISA-3D, RISA-2D, RISA Floor and other component-level structural engineering calculation software. It is the closest direct competitor to ENERCALC SEL, serving the same structural engineers with overlapping module coverage for steel, concrete, wood, and masonry design.
• Computers & Structures, Inc. (CSI): CSI develops SAP2000, ETABS, and SAFE for structural analysis and design, serving the same structural engineering customer base as ENERCALC. While more analysis-oriented, its products overlap ENERCALC's analysis modules (e.g., ENERCALC 3D FEM) and compete for the same design-firm seats.
• SkyCiv Engineering: SkyCiv offers cloud-native structural analysis and design software (beams, columns, foundations, 3D frames) on a subscription model. It targets the same SMB and educational customer base as ENERCALC and represents the cloud-first competitive threat.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@ENERCALCSoftware
• LinkedInlinkedin.com/company/enercal-engineering-inc
• Instagraminstagram.com/enercalc

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 Enercalc