BIM · Energy Simulation · Digital Twin. Run buildings like software.
One team takes a building from precision BIM, through EnergyPlus-based energy simulation, into the FACADE digital twin platform — the full smart-building transition pipeline, end to end.
live at the Seongsu site
LLM · AR/XR · drawing-sensor AI
BIM · CG · 3D · AI
KOITA R&D unit recognition
Energy and carbon are no longer
operational issues. They're financial ones.
Global final energy use
Buildings account for roughly 34% of global final energy consumption and CO₂ emissions.
Source — IEA, Buildings
Korea's 4th-phase emissions trading begins
In Korea, carbon emissions translate directly into financial cost on the building's balance sheet.
Reference — Korea Ministry of Environment, 4th Emissions Trading Scheme Plan
ZEB certification mandatory (2025)
Public buildings now require ZEB Grade 4, private buildings Grade 5 — with progressive tightening through 2030.
Reference — Korea MOLIT & MOTIE, Zero Energy Building Certification
Three services. Run them separately, or as one.
BIM modeling, energy simulation, and digital twin are each available as standalone engagements. When run together, one model and one team eliminate the data loss and rework that happen between stages.
If you already own parts of the stack, we deliver only the stages you need.
- ·BIM only — built to a reuse-grade quality, not just a permit-grade one
- ·Energy simulation only (including standalone IDF) — when there is no BIM, or BIM comes from an outside source
- ·Digital twin only — FACADE deployed on top of your existing BIM/BEM assets
All three stages on a single model. No inter-stage data loss, no rework.
- BIM change auto-propagates to simulation and digital twin
- BIM, BEM, and operational data share a single ID system
- Certification audits work off a single source of truth
Without precise BIM, everything downstream is wrong.
BIM demand has surged with new mandates, yet most BIM is still produced just to clear permit drawings. The industry keeps shipping models that can't be reused for energy simulation or digital twin operations.
Reference — Korea PPS & MOLIT, BIM Guidelines for the Construction Industry · Phased Implementation
- · Integrated architecture, structure, HVAC, electrical, mechanical
- · MEP and material property data entered with precision
- · Standardized Level and Zone definitions
- · Specs, mechanical, electrical, and inspection data unified
- · Zoning pre-engineered for energy simulation compatibility
- · Asset attribute mapping carried through to the digital twin
- · Revit changes auto-sync to Tandem — no asset attribute loss
- · LLM-driven HVAC/BEM auto-correction (patent filed)
Experimenting on a live building pushes the cost onto tenants.
Changing operating conditions on a real building creates discomfort and cost. Energy simulation runs the experiments on the digital twin instead — finding the right comfort/efficiency trade-off before anyone touches the real equipment.
MEP & material entry
Surface matching
Thermal Zone · HVAC
Calibrated to measured data
· Key per-system control points — Fan/Pump Electricity Rate, Boiler Natural Gas Rate, VRF Heat Pump Cooling/Heating Electricity (all Hourly)
No equipment swaps. Software integration only.
FACADE unifies BIM, equipment, and operational data into a single digital twin, and lets AI spot inefficiencies and propose corrective actions before they happen. Direct integration with BACnet, Modbus, and other legacy protocols means we never have to rip out existing equipment to deploy.
Equipment, sensors, documents, and control points wired up at the BIM-object level. One click in 3D to inspect or control.
The Facility Energy Efficiency index flags floor-level inefficiencies in real time. Efficiency relative to comfort delivered — not raw power draw.
Not just notifications — historical-context root cause analysis with proposed remediation steps. First-line response without specialist operators.
Simulate the outcome of a control change before applying it. Autonomous control runs only inside pre-defined safety envelopes.
Direct support for BACnet, Modbus, and other legacy protocols. 13 integrated categories — environment, HVAC, lighting, operations, parking, CCTV, elevators, solar, geothermal, power, water, energy, AI analytics.
Large-scale BIM loaded directly in the browser — no client install. Fine-grained role- and attribute-based access control.
The BIM file is the digital twin.
Conventional digital twins are not actually driven by BIM. A human reads 2D CAD drawings and rebuilds a 3D model by hand in Maya or 3ds Max. Every drawing change demands rework, and the digital twin slowly drifts apart from the real building.
Aetherion ingests the BIM file directly — the digital twin stays in sync, always. The maintenance economics are fundamentally different.
- A modeler reads 2D CAD and rebuilds the 3D model from scratch in Maya or 3ds Max — all by hand
- Every CAD/BIM change requires the modeler to redo the work
- Maintenance is painful and expensive — the model drifts from the building over time
- Requires a dedicated game-engine client install
- Attribute and relationship data is lost — visualization only
- BIM ingested as-is — our own BIM renderer (FACADE-BONE) reads it natively. No re-modeling.
- Auto-sync on BIM update — upload a new BIM and the digital twin refreshes immediately.
- Maintenance = BIM update — when BIM moves, the twin moves with it.
- Properties & spatial relationships preserved — Revit's object data carries through unchanged.
Two lineups, one team.
Pick one — or run both.
We operate both an Autodesk-integrated stack and an in-house native stack, in-house. They share the same data model, so customers can pick either — or run them in parallel — depending on IT, contractual, and security requirements.
- Native Autodesk cloud integration
- Embedded viewer on Autodesk Platform Services (APS)
- Auto-sync on Revit model changes
- Ideal for customers already inside the Autodesk ecosystem
- Cloud SaaS — fast time-to-deployment
- Air-gapped standalone — runs entirely on closed networks
- FACADE-BONE in-house BIM renderer — no vendor lock-in
- Per-customer UI/UX customization, end to end
Two effects, both quantified.
Energy savings
Digital-twin operations combining predictive control (MPC/ESC), virtual sensing (fault detection), and peak shaving model out to roughly 15% operating-cost reduction on average (±30% confidence interval, simulated against a 13,000 m² Seoul office baseline).
Source — Samsung Newsroom 2026.01.21. Calculation by the Pukyong National University research team. Real-world savings vary with operating conditions, equipment, and run modes.
Certification readiness
Digital twin and energy simulation are core scoring inputs for major smart-building certifications. Virtual sensing, predictive control, and advanced metering data feed directly into SmartScore, LEED O+M, and ZEB scoring.
Factorial Seongsu · Korea's first SmartScore Gold
Aetherion delivered the digital twin domain at Factorial Seongsu, co-executing with Samsung Electronics' b.IoT team. From BIM data construction to digital twin platform, real-time equipment control, and AI analytics — handled by a single team. End-to-end ownership of this scope is rare in Korea.
- Partner
- Samsung Electronics (b.IoT solution)
- Building owner
- IGIS Asset Management
- Project scope
- Digital twin domain of the Samsung b.IoT deployment, co-delivered
- Location
- Seongsu-dong, Seoul
- GFA
- 21,060 m²
- Start
- August 2025 (BIM data construction)
- Status
- Production-grade deployment · in live operation
- Certification
- SmartScore Gold (Jan 2026) — first in Korea
- Academic partner
- Seoul National University R&DB — joint energy simulation research (Dec 2025)
Certification source — Samsung Newsroom, 2026.01.21
"Korea's first" isn't
a trophy. It's evidence.
SmartScore Gold is a global smart-building certification run by London-based WiredScore. Global landmarks like Houston's Texas Tower and Hong Kong's The Henderson have passed the same process, and Factorial Seongsu is the first in Korea to clear it.
Source — Samsung Newsroom, 2026.01.21
Capital · Tenants · Asset value
- · The de facto global standard global capital and multinational tenants use to verify a building's digital maturity
- · A defensible basis for premium rents — academic and industry research links certification to higher rents and occupancy
- · Counts directly toward ESG reporting and CDP scoring
Real outcomes are scored
- · Four scoring domains — User Experience · Sustainability · Cost Efficiency · Future-proofing
- · Doesn't reward "we installed it" — it scores measurable effect from virtual sensing, predictive control, advanced metering, and more
- · Five tiers — Pre-certified, Certified, Silver, Gold, Platinum. Gold is upper-tier.
Direct scoring inputs
- · Reactive BEMS/BMS alarms aren't enough — real-time simulation, predictive control, and advanced metering are required
- · Virtual-sensing fault detection is a direct scoring item
- · BIM + operational data unification + automated analytics is the digital twin's day job
WiredScore's four scoring domains
Virtual sensing, predictive control, advanced metering, and digital twin together are effectively the prerequisite stack for SmartScore Gold. Aetherion co-delivered the digital twin domain with Samsung Electronics' b.IoT solution.
The same digital-twin and simulation foundation supports LEED O+M Gold and Korea's ZEB certification (up to 15% acquisition-tax reduction and other incentives).
The fastest way to understand it is to watch it.
Model Exploration · Day/Night Lighting · Elevator Tracking · IoT Overlay · Occupancy Heatmap · GSHP HVAC Simulation
Inspector-grade tooling for working with large BIMs — category filtering, multi-select, navigation cube, dynamic pivots.
Three things that are structurally different.
In-house BIM rendering engine (FACADE-BONE)
BIM Ontology Native Engine — our own core technology that maps the source BIM's objects, attributes, and spatial relationships directly into Unity, Unreal, and Web engines, all preserved. Running alongside Tandem in a dual stack reduces vendor lock-in.
Predictive · safety-bounded autonomous control
Not rule-based reactive alarms — AI simulates the outcome of a control action, and autonomous control is applied incrementally inside hard safety envelopes. Every step of the decision is logged on the digital twin, so certification, reporting, and audit all run off the same evidence.
Deployment without equipment replacement
A heterogeneous-equipment gateway speaks BACnet, Modbus, and other legacy protocols natively, so the digital twin goes live through software integration alone — no hardware swap. Significantly cheaper to deploy than a BAS/BEMS upgrade while delivering equal or better integration.
Three core patents filed in 2025
FACADE platform — key capabilities
Start with one building.
Get to cities that run themselves.
Aetherion's long-term goal is to be the standard infrastructure for operating the physical built environment as software — Physical AI for the Built World. The pilots and standards work in progress today are the first step.
Judged on technology, deployment, and verified track record.
A core team with 10+ years of shipping products together across BIM, computer graphics, real-time 3D, and AI is now focused on smart buildings. Self-funded, with our own Gwanghwamun research center — set up to sustain long-horizon R&D and field deployment.
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Certified Venture Business · Innovation-Growth typeKorea Venture Business Association · Article 25, Venture Business Development Act
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Dedicated R&D unitRecognized by KOITA (Korea Industrial Technology Association)
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Senior teamCore members with 10+ years across BIM, computer graphics, real-time 3D, AI, and energy modeling
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3 core patents filedLLM-driven HVAC/BEM generation · digital-twin AR/XR visualization · drawing–sensor fusion AI
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International standardsMember of the IEEE 2888.X Working Group
- Company
- Aetherion Co., Ltd.
- Business reg. no.
- 317-86-03438
- Business type
- Application software development & supply
- Focus areas
- Smart building digital twin · Energy simulation · BIM
- Headquarters
- 96 Saemunan-ro 6F, Jongno-gu, Seoul, Republic of Korea (Gwanghwamun Research Center)
- External channels
- atrn@atrn.ai · YouTube · @aetherion-dt
From BIM to digital twin —
we reply within one business day.
Tell us the current state of your building drawings, equipment data, and operating data, and we will map out the digital transformation in concrete stages. Per-building ROI analysis is available at dt.atrn.ai.
Seoul, Republic of Korea
(Gwanghwamun Research Center)