Make informed decisions about your building design with our advanced simulation and modeling services. Using industry-leading software like EnergyPlus, eQUEST, DesignBuilder, and CFD tools, we analyze energy performance, daylighting, thermal comfort, and environmental impact before construction begins—saving you time, money, and ensuring optimal efficiency.

Our Expertise:

• 100+ simulation projects completed
• BEE-certified energy auditors and ECBC Master Trainers
• IGBC & LEED accredited professionals
• Advanced software proficiency

What is Building Performance Simulation?

Building performance simulation is the use of computer software to create a virtual model of your building and predict how it will perform in real-world conditions. By simulating a full year of operation with actual weather data, we can:

• Predict energy consumption before construction
• Compare design alternatives quantitatively
• Optimize building systems for efficiency
• Demonstrate ECBC compliance through the Whole Building Performance Method
• Achieve green building certifications (IGBC, LEED, GRIHA)
• Identify problems early when changes are still cost-effective
• Reduce risk by making data-driven decisions

Think of it as a “test drive” for your building—you can experiment with different designs, materials, and systems virtually before committing to expensive construction decisions.

Why Building Simulation is Essential

1. Avoid Costly Mistakes

Design changes during construction can cost 10-100 times more than changes during design. Simulation identifies potential issues early when fixes are cheap.

2. Optimize Performance

Simulation lets you test dozens of design options to find the most efficient combination of building orientation, envelope, systems, and controls.

3. Meet Code Requirements

ECBC compliance via the Whole Building Performance Method requires energy simulation. We ensure your model meets all code requirements.

4. Achieve Certification Goals

Green building certifications (IGBC, LEED, GRIHA) award significant points for energy performance. Our simulations help maximize your scores.

5. Make Data-Driven Decisions

Instead of guessing which HVAC system is best, simulation provides quantitative comparisons with energy consumption, costs, and payback periods.

6. Demonstrate ROI

Our reports show stakeholders exactly how much energy and money each design feature will save, making it easier to justify sustainable investments.

7. Comply with Regulations

Many states now require energy modeling for buildings above certain sizes. We keep you compliant with evolving regulations.

Our Simulation Services

1. Energy Modeling & Simulation

What We Model:

Building Envelope:

• Wall assemblies and insulation
• Roof construction and reflectivity
• Window-to-wall ratios
• Glazing properties (U-value, SHGC, VLT)
• Shading devices and overhangs
• Air infiltration rates

HVAC Systems:

• Chilled water systems with chillers, pumps, cooling towers
• VRF/VRV multi-split systems
• Package and split AC units
• Air handling units (AHU) and fan coil units (FCU)
• Ventilation and outdoor air requirements
• Economizers and heat recovery
• Controls and setpoints

Lighting Systems:

• Interior lighting power density
• Lighting controls (occupancy sensors, daylight dimming)
• Exterior lighting
• Emergency lighting

Internal Loads:

• Occupancy schedules
• Equipment and plug loads
• Process loads (for specialized facilities)
• Domestic hot water systems

Renewable Energy:

• Solar photovoltaic systems
• Solar water heating
• Wind turbines
• Geothermal systems

Software We Use:

• EnergyPlus: DOE’s flagship simulation engine, most accurate and detailed
• eQUEST: Fast and widely used for code compliance and design analysis
• DesignBuilder: EnergyPlus with intuitive 3D interface
• TRACE 700/3D Plus: Trane’s comprehensive HVAC design and analysis tool
• IES VE (Virtual Environment): Integrated suite for energy, daylighting, and CFD

Deliverables:

• Baseline and proposed building energy models
• Annual energy consumption by end-use (HVAC, lighting, equipment, hot water)
• Monthly energy profiles
• Peak demand analysis
• Utility cost estimates (electricity, gas, diesel)
• Energy Use Intensity (EUI) benchmarking
• ECBC compliance documentation
• Parametric analysis comparing design options
• Comprehensive report with recommendations

Applications:

• New building design optimization
• Major renovation and retrofit planning
• ECBC compliance demonstration
• Green building certification (IGBC, LEED, GRIHA)
• Energy conservation measure evaluation
• Life cycle cost analysis

Typical Timeline: 2-4 weeks depending on building complexity Investment: ₹50,000-3,00,000 based on project size and detail

2. ECBC Compliance Modeling

The Energy Conservation Building Code (ECBC) requires commercial buildings with connected load ≥100 kW to meet minimum energy efficiency standards.

Compliance Paths:

Prescriptive Method: Meet all mandatory requirements plus requirements for each building system (envelope, HVAC, lighting, etc.)

Trade-Off Method: Trade off performance in one system for better performance in another while meeting overall targets

Whole Building Performance Method: Demonstrate through simulation that your proposed building uses less energy than a compliant baseline building

Our ECBC Modeling Services:

For New Buildings:

• Baseline model per ECBC specifications
• Proposed building model with your design
• Annual energy consumption comparison
• Documentation for authority approval
• Support during plan scrutiny

For ECBC+ and SuperECBC: Demonstrate 25% and 50% better performance than standard ECBC through advanced simulation

ECBC Compliance Benefits:

• Legal requirement for specified buildings
• Reduced energy costs (30-50% vs. non-compliant)
• Faster approvals in many jurisdictions
• Eligibility for incentives and FAR bonuses
• Green building certification prerequisites

Deliverables:

• ECBC-compliant baseline model
• Proposed building model
• Compliance calculation sheets
• Detailed comparison report
• Certification documentation
• Support for statutory submissions

Investment: ₹75,000-2,50,000 depending on building size and complexity

3. Daylighting Analysis & Simulation

Natural daylight reduces lighting energy, improves occupant well-being, and is essential for green building certifications.

What We Analyze:

Daylight Metrics:

• Daylight Factor (DF): Percentage of outdoor light reaching indoor spaces
• Spatial Daylight Autonomy (sDA): Percentage of space receiving sufficient daylight
• Annual Sunlight Exposure (ASE): Measure of excessive direct sunlight causing glare
• Useful Daylight Illuminance (UDI): Illuminance in the “useful” range (100-2000 lux)
• Daylight Glare Probability (DGP): Risk of glare discomfort

What We Study:

• Window sizes and placement optimization
• Glass specifications (VLT, tint)
• Shading devices (louvers, overhangs, fins)
• Skylights and roof monitors
• Light shelves and reflective surfaces
• Interior surface reflectances
• Furniture and partition layouts
• Seasonal and hourly variations

Software We Use:

• Radiance: Research-grade ray-tracing engine, most accurate
• DIVA for Rhino: Climate-based daylighting metrics
• ClimateStudio: Fast, accurate daylighting and glare analysis
• Dialux: Lighting design with daylighting integration
• AGi32: Comprehensive lighting and daylighting tool
• IES VE: Integrated daylighting with energy simulation

Benefits:

• Reduce artificial lighting energy by 30-60%
• Improve occupant productivity and satisfaction
• Meet green building certification requirements (LEED, IGBC, GRIHA)
• Demonstrate compliance with NBC daylight requirements
• Optimize facade design for views and daylight balance
• Minimize glare problems before construction

Deliverables:

• Daylight factor calculations
• Climate-based daylight metrics (sDA, ASE, UDI)
• False color renderings showing light levels
• Annual daylight availability charts
• Glare analysis reports
• Design recommendations for improvements
• Compliance documentation for certifications

Applications:

• Office buildings (especially critical for occupant comfort)
• Educational facilities (classrooms, libraries)
• Healthcare facilities (patient rooms, corridors)
• Retail spaces (enhancing merchandise presentation)
• Museums and galleries (controlled daylighting)
• Residential buildings (living spaces, bedrooms)

Timeline: 1-3 weeks Investment: ₹40,000-1,50,000

4. Computational Fluid Dynamics (CFD) Simulation

CFD provides detailed 3D visualization of air movement, temperature distribution, and thermal comfort—far more detailed than standard energy models.

What CFD Reveals:

Airflow Patterns:

• Air velocity distribution throughout spaces
• Dead zones with stagnant air
• Short-circuiting in ventilation systems
• Stratification and air mixing
• Natural ventilation effectiveness

Temperature Distribution:

• Hot and cold spots identification
• Thermal stratification
• Mean radiant temperature (MRT)
• Surface temperatures of walls, floors, ceilings

Thermal Comfort:

• PMV (Predicted Mean Vote): Thermal sensation scale
• PPD (Predicted Percentage Dissatisfied): Occupant dissatisfaction
• Draft risk assessment
• Vertical temperature gradients
• Asymmetric radiant temperature

Indoor Air Quality:

• Contaminant dispersion
• CO2 concentration mapping
• Ventilation effectiveness
• Pathogen transmission risk (post-COVID consideration)

Applications:

HVAC System Design:

• Optimal diffuser placement and selection
• Supply air temperature and flow rate optimization
• Return air grille locations
• Under-floor vs. overhead distribution
• Displacement ventilation design

Natural Ventilation:

• Cross-ventilation effectiveness
• Stack effect utilization
• Window and vent sizing
• Courtyard and atrium ventilation
• Wind-driven ventilation

Large Spaces:

• Atriums and lobbies
• Auditoriums and theaters
• Airports and terminals
• Manufacturing facilities
• Data centers (critical for hot spot prevention)

Specialized Applications:

• Clean rooms and laboratories
• Hospital operating rooms
• Industrial facilities with process heat
• Kitchen and restaurant ventilation
• Indoor swimming pools

Software We Use:

• Autodesk CFD: User-friendly with good accuracy
• ANSYS Fluent: Industry-standard for complex flows
• OpenFOAM: Open-source, highly customizable
• IES MicroFlo: Integrated with energy simulation
• PHOENICS: Specialized for building applications

Deliverables:

• 3D velocity vector plots
• Temperature contour maps
• Comfort parameter maps (PMV, PPD)
• Air age and ventilation effectiveness
• Quantitative performance metrics
• Design recommendations
• Animated visualizations
• Comprehensive technical report

Timeline: 2-4 weeks depending on complexity Investment: ₹1,00,000-5,00,000

5. Solar Analysis & PV System Modeling

Understand solar radiation on your building and optimize photovoltaic system design.

Solar Radiation Analysis:

• Annual solar radiation on facades and roofs
• Hourly/monthly solar heat gain
• Shading analysis from surrounding buildings and trees
• Optimal panel orientation and tilt
• Seasonal variations

PV System Performance Modeling:

• Annual energy generation predictions
• System efficiency accounting for:
• Temperature effects
• Inverter losses
• DC to AC conversion
• Soiling and degradation
• Hourly generation profiles
• Grid export vs. self-consumption analysis
• Battery storage optimization
• Financial analysis (payback, IRR, NPV)

Software We Use:

• PVsyst: Industry-standard PV system design
• Helioscope: Fast, accurate PV modeling
• SAM (System Advisor Model): NREL’s comprehensive renewable energy tool
• SketchUp with solar plugins: 3D solar analysis
• ClimateStudio: Solar radiation with energy simulation

Deliverables:

• Site solar resource assessment
• Optimal PV array layout
• Annual energy production forecast
• Financial analysis with incentives
• Shading loss analysis
• String configuration recommendations
• Equipment specifications
• Comprehensive feasibility report

Investment: ₹30,000-1,50,000

6. Thermal Comfort Analysis

Ensure occupant comfort through detailed analysis of thermal conditions.

What We Analyze:

Thermal Comfort Parameters:

• Air temperature
• Mean radiant temperature (MRT)
• Air velocity
• Relative humidity
• Metabolic rate (activity level)
• Clothing insulation

Comfort Indices:

• PMV/PPD: Fanger’s Predicted Mean Vote and Percentage Dissatisfied
• Operative Temperature: Combined effect of air and radiant temperature
• SET (Standard Effective Temperature)
• Adaptive Comfort: For naturally ventilated buildings per ASHRAE 55

Analysis Methods:

Zonal Analysis: Using energy simulation software to predict average comfort conditions in each thermal zone

Detailed Spatial Analysis: Using CFD to map comfort conditions at every point in a space, revealing local discomfort

Applications:

• Optimize HVAC system design
• Design radiant heating/cooling systems
• Plan furniture layouts for comfort
• Design naturally ventilated spaces
• Investigate comfort complaints in existing buildings
• Demonstrate compliance with standards (ASHRAE 55, ISO 7730)

Deliverables:

• Comfort parameter calculations
• PMV/PPD maps showing spatial variations
• Compliance assessment with comfort standards
• Identification of thermal discomfort zones
• Design recommendations for improvements

Timeline: 1-2 weeks (zonal), 2-3 weeks (CFD spatial) Investment: ₹40,000-1,50,000

7. Parametric Analysis & Design Optimization

Compare multiple design options systematically to find the optimal solution.

What We Optimize:

Building Envelope:

• Wall insulation thickness and materials
• Roof insulation and reflectivity (cool roofs)
• Window-to-wall ratio (WWR)
• Glass specifications (U-value, SHGC, VLT)
• Shading devices (depth, angle)
• Building orientation

HVAC Systems:

• System type comparison (VRF vs. chilled water vs. DX)
• Chiller efficiency (COP)
• Setpoint temperatures
• Ventilation rates
• Economizer strategies
• Equipment sizing

Lighting:

• Lighting power density (LPD)
• Control strategies (occupancy, daylight)
• LED color temperature and CRI

Renewable Energy:

• Solar PV system sizing
• Solar water heating
• Battery storage capacity

Optimization Process:

Step 1: Baseline Create model of current design or standard practice

Step 2: Parametric Runs Systematically vary each design parameter

Step 3: Analysis Compare energy, cost, and comfort metrics

Step 4: Optimization Identify optimal combination of measures

Step 5: Sensitivity Analysis Test robustness of recommendations

Deliverables:

• Baseline performance metrics
• Parametric study results matrix
• Energy and cost savings for each option
• Pareto frontier showing optimal solutions
• Sensitivity analysis
• Prioritized recommendations with ROI
• Final optimized design specifications

Benefits:

• Objective comparison of design alternatives
• Identify best-performing strategies
• Balance initial cost vs. operating savings
• Support value engineering decisions
• Maximize green building certification points

Investment: ₹75,000-3,00,000 depending on number of parameters

8. Retrofit & Renovation Modeling

For existing buildings, simulation identifies the most cost-effective upgrades.

Our Process:

Step 1: Baseline Calibration Create a model of existing building and calibrate it with actual utility bills to ensure accuracy

Step 2: Energy Conservation Measure (ECM) Analysis Model individual retrofit measures:

• Lighting upgrades (LED retrofits)
• HVAC improvements (chiller replacement, VFDs, controls)
• Building envelope upgrades (insulation, window replacement)
• Renewable energy additions
• Building automation systems

Step 3: Package Analysis Combine measures into cost-effective packages

Step 4: Financial Analysis Calculate savings, costs, payback, NPV, IRR for each package

Typical ECMs We Model:

• LED lighting retrofits
• HVAC system replacement or upgrades
• Building Management System (BMS) installation
• Variable Frequency Drives (VFDs) on motors
• Cool roof coatings
• Window films or replacement
• Insulation improvements
• Solar PV installation
• Water-cooled chiller upgrades
• Economizer additions

Deliverables:

• Calibrated baseline model
• Individual ECM performance and economics
• ECM packages with cumulative savings
• Implementation priority recommendations
• Measurement and verification (M&V) plan
• ESCO/financing-ready reports

Applications:

• Major building renovations
• Energy service company (ESCO) projects
• Investment-grade audits
• Green building certification for existing buildings

Timeline: 3-6 weeks including calibration Investment: ₹1,00,000-4,00,000

9. Climate-Responsive Design Studies

Optimize building design for India’s diverse climate zones.

India’s Climate Zones (NBC):

• Hot & Dry: Rajasthan, parts of Gujarat, Maharashtra
• Warm & Humid: Coastal regions, Kerala, Goa
• Composite: Delhi, Jaipur, Ahmedabad (extreme seasons)
• Temperate: Bangalore, Pune
• Cold: Himalayan regions

Climate-Specific Strategies We Analyze:

Hot & Dry Climates:

• Thermal mass for temperature damping
• Courtyards and shaded outdoor spaces
• Evaporative cooling feasibility
• Night ventilation strategies
• High roof insulation

Warm & Humid Climates:

• Maximum natural ventilation
• Shading from direct sun
• Reduced thermal mass (faster cooling)
• Dehumidification strategies
• Elevated buildings for air circulation

Composite Climates:

• Seasonal strategies (winter heating, summer cooling)
• Adaptive building envelope
• Mixed-mode ventilation
• Thermal storage for shoulder seasons

What We Deliver:

• Climate analysis for your specific location
• Passive design strategy recommendations
• Optimized building orientation
• Shading device design
• Natural ventilation feasibility
• Seasonal operation strategies
• Energy and comfort predictions

Investment: ₹50,000-2,00,000

10. Life Cycle Assessment (LCA) Simulation

Analyze environmental impact beyond just operational energy.

What We Assess:

Embodied Carbon: Carbon emissions from material extraction, manufacturing, transportation, and construction

Operational Carbon: Carbon emissions from energy use during building operation

End-of-Life: Emissions from demolition, waste, and recycling

Life Cycle Stages:

• A1-A3: Product stage (extraction, transport, manufacturing)
• A4-A5: Construction stage (transport, installation)
• B1-B7: Use stage (operation, maintenance, replacement)
• C1-C4: End-of-life (demolition, waste processing)

Environmental Indicators:

• Global Warming Potential (GWP): kg CO2 equivalent
• Embodied Energy: MJ per kg or per m²
• Water consumption
• Resource depletion
• Eutrophication, acidification

Software & Standards:

• One Click LCA: Comprehensive LCA tool
• Tally (Revit plugin): BIM-integrated LCA
• GaBi/SimaPro: Detailed LCA software
• ISO 14040/14044: LCA methodology standards
• EN 15978: Assessment of environmental performance of buildings

Applications:

• Material selection (low-carbon alternatives)
• Net Zero carbon building design
• Green building certifications (LEED MR, IGBC Materials)
• Corporate sustainability reporting
• Comparison of construction systems

Deliverables:

• Whole building LCA results
• Material-by-material breakdown
• Comparison of design alternatives
• Recommendations for carbon reduction
• Certification documentation

Investment: ₹1,00,000-4,00,000 depending on detail

Our Simulation Methodology

Step 1: Project Briefing & Data Collection

• Understand project goals and constraints
• Collect architectural drawings (floor plans, sections, elevations)
• Gather MEP system information
• Obtain local weather data
• Define analysis scope and deliverables

Step 2: Model Development

• Create 3D building geometry
• Define thermal zones
• Input envelope properties (walls, roofs, windows)
• Model HVAC systems and controls
• Input lighting and equipment loads
• Define occupancy schedules
• Apply local weather data

Step 3: Model Validation & Calibration

• Check inputs for consistency
• Run diagnostic checks
• For existing buildings: calibrate with utility bills
• Peer review of model setup

Step 4: Baseline Simulation

• Run annual simulation (8,760 hours)
• Generate baseline energy consumption
• Calculate performance metrics (EUI, energy costs)
• Identify major energy end-uses

Step 5: Parametric Analysis (if applicable)

• Systematically vary design parameters
• Run simulations for each scenario
• Compare results quantitatively

Step 6: Results Analysis

• Analyze hourly/monthly energy profiles
• Calculate energy savings
• Perform financial analysis (simple payback, NPV, IRR)
• Benchmark against standards and best practices
• Identify optimization opportunities

Step 7: Reporting & Presentation

• Comprehensive technical report
• Executive summary for management
• Visual presentations (charts, graphs, 3D renderings)
• Recommendations prioritized by impact and cost
• Presentation to design team

Step 8: Implementation Support (optional)

• Design documentation support
• Specifications for equipment and materials
• Contractor coordination
• Construction phase monitoring
• Commissioning support
  

Software & Tools We Master

Energy Simulation Engines

EnergyPlus

• DOE’s flagship engine, most detailed and accurate
• Hourly energy simulation with comprehensive physics
• Used for LEED, IGBC, ECBC compliance
• Open-source, constantly improved

eQUEST (DOE-2 engine)

• Fast, intuitive, widely accepted
• Excellent for code compliance
• Hourly and parametric simulations
• User-friendly graphical interface

TRACE 700/3D Plus

• Trane’s comprehensive HVAC design tool
• Equipment sizing integrated with energy analysis
• Good for load calculations and system selection

Integrated Environments

DesignBuilder

• EnergyPlus with intuitive 3D modeling
• Integrated CFD and daylighting
• Excellent visualization
• Fast learning curve

IES VE (Virtual Environment)

• Comprehensive suite covering energy, daylight, CFD, solar
• BIM integration (Revit, ArchiCAD)
• Advanced features for complex buildings
• Used by leading consultants globally

OpenStudio

• Open-source graphical interface for EnergyPlus
• Parametric analysis tool (PAT)
• Measures library for common strategies
• SketchUp plugin

Daylighting Simulation

Radiance

• Research-grade ray-tracing, most accurate
• Climate-based daylight metrics
• Complex geometries and materials
• Open-source

DIVA for Rhino

• Radiance integration with Rhino
• Climate-based metrics (sDA, ASE, UDI)
• Glare analysis (DGP)
• Grasshopper parametric integration

ClimateStudio

• Fastest and most accurate daylighting tool
• Rhino plugin
• Energy, daylight, glare, thermal comfort
• Intuitive workflows

Dialux/Dialux EVO

• Professional lighting design
• Daylighting integration
• IES photometric files
• Free software

CFD Simulation

Autodesk CFD

• User-friendly interface
• Thermal comfort and ventilation analysis
• Reasonable accuracy for buildings
• Integration with Revit

ANSYS Fluent

• Industry-standard CFD
• Most powerful for complex flows
• Accurate but steep learning curve
• Used for critical applications (data centers, hospitals)

OpenFOAM

• Open-source CFD
• Highly customizable
• Cost-effective for complex problems
• Active user community

IES MicroFlo

• Building-specific CFD
• Integration with IES VE
• Natural and mechanical ventilation
• Good for typical building applications

Solar & Renewable Energy

PVsyst

• Industry-standard for PV system design
• Detailed shading analysis
• Financial modeling
• Internationally recognized

SAM (System Advisor Model)

• NREL’s renewable energy tool
• Solar PV, CSP, wind, biomass
• Detailed financial modeling
• Free from NREL

Helioscope

• Cloud-based PV design
• Fast and accurate
• 3D shading analysis
• Used by solar installers

Specialized Tools

Sefaira (SketchUp/Revit plugin)

• Real-time energy feedback during design
• Parametric studies
• Daylight and glare
• Cloud-based

Ladybug Tools (Grasshopper)

• Climate analysis
• Solar radiation
• Daylight
• Outdoor comfort
• Open-source and parametric

WINDOW/THERM (LBNL)

• Detailed window and thermal bridge analysis
• Material properties
• U-factor and SHGC calculations
• Free from LBNL
  

Industries & Building Types We Serve

Commercial Buildings

• Office buildings and corporate parks
• Retail centers and malls
• Hotels and hospitality
• Restaurants and food services
• Banks and financial institutions
• Data centers

Institutional Buildings

• Educational facilities (schools, colleges, universities)
• Government offices
• Hospitals and healthcare facilities
• Libraries and museums
• Research laboratories
• Community centers

Industrial Facilities

• Manufacturing plants
• Warehouses and distribution centers
• Food processing units
• Pharmaceutical facilities
• Clean rooms
• Cold storage

Residential Buildings

• Individual homes and villas
• Apartment buildings
• Residential townships
• Senior living facilities
• Student housing

Specialized Facilities

• Airports and terminals
• Metro stations and railway facilities
• Convention centers
• Sports complexes
• Indoor swimming pools
• Auditoriums and theaters

Why Choose Ensimulated Solutions for Building Simulation?

1. Expert Team with Deep Experience

Mr. Saibal Saha leads our simulation team with:

• 30+ years of experience in energy efficiency and building design
• BEE Certified Energy Auditor
• ECBC Master Trainer and Expert Professional
• IGBC Accredited Professional & Fellow
• GRIHA Certified Professional
• Certified Professional in Life Cycle Assessment

Our team has completed 100+ simulation projects across diverse building types and climate zones throughout India.

2. Multi-Software Proficiency

We’re not limited to one tool. We select the best software for each project:

• EnergyPlus/eQUEST/DesignBuilder for detailed energy analysis
• Radiance/DIVA/ClimateStudio for daylighting
• CFD tools for thermal comfort and air quality
• PVsyst/SAM for renewable energy
• LCA software for embodied carbon

3. Practical, Implementable Recommendations

We don’t just deliver reports that sit on shelves. Our recommendations are:

• Cost-effective: Focus on measures with good ROI
• Practical: Suitable for Indian construction practices and availability
• Prioritized: Clear ranking by impact and feasibility
• Detailed: Specifications ready for procurement

4. Comprehensive Service

From initial concept through construction and operation:

• Early-stage: Climate analysis and passive design strategies
• Design phase: Detailed energy modeling and optimization
• Documentation: ECBC and certification compliance reports
• Construction: Monitoring and change order evaluation
• Operations: Commissioning support and troubleshooting

5. Green Building Integration

Simulation is integral to green building certification:

• IGBC: Energy performance credits
• LEED: EAc1 Optimize Energy Performance (up to 21 points)
• GRIHA: Energy simulation and benchmarking
• ECBC: Mandatory compliance demonstration

We handle all simulation requirements for certifications seamlessly.

6. Regulatory Expertise

We stay current with:

• Latest ECBC code versions and amendments
• State-specific building regulations
• NBC energy requirements
• BEE guidelines
• Emerging policies

7. Fast Turnaround

We respect project schedules:

• Standard energy model: 2-3 weeks
• Daylighting study: 1-2 weeks
• CFD analysis: 2-3 weeks
• Comprehensive package: 4-6 weeks

Rush services available for time-critical projects.

8. Competitive Pricing

Our rates are fair and transparent:

• No hidden costs
• Fixed-price or time-and-materials options
• Volume discounts for multiple buildings
• Long-term partnerships valued

9. Client-Focused Approach

• Clear communication throughout
• Regular progress updates
• Flexible to accommodate design changes
• Training provided on interpreting results
• Post-delivery support for questions

10. Trusted by Leading Organizations

Our clients include:

• Reserve Bank of India
• Southeastern Railway
• Axis Bank Limited
• Ambuja Neotia Group
• Peerless Group
• Leading architects and MEP consultants

Q1. What is building performance simulation and why do I need it? 

Building performance simulation is the use of advanced computer software to create a virtual model of your building and predict how it will perform under real-world conditions — before a single brick is laid. It helps you make smarter design decisions, avoid costly construction mistakes, reduce long-term energy bills, and meet regulatory requirements like ECBC compliance and green building certifications (IGBC, LEED, GRIHA).

Q2. When is the right time to commission a building simulation study? 

The earlier, the better. Ideally, simulation should begin at the concept or schematic design stage — when changes are still inexpensive to make. However, we also provide simulation services during detailed design, pre-construction, and even for existing buildings undergoing renovation or retrofit. The later you engage, the fewer design options you have to optimize.

Q3. Which buildings require energy simulation as per Indian regulations? 

Under the Energy Conservation Building Code (ECBC), all commercial buildings with a connected load of 100 kW or more are required to meet minimum energy efficiency standards. Buildings opting for the Whole Building Performance Method of ECBC compliance must demonstrate this through energy simulation. Many state governments also mandate energy modeling for large buildings as part of their building approval process.

Q4. What software do you use for simulation? 

We use a comprehensive suite of industry-leading tools selected based on project requirements — including EnergyPlus, eQUEST, DesignBuilder, IES VE, Radiance, DIVA for Rhino, ClimateStudio, ANSYS Fluent, OpenFOAM, PVsyst, SAM, and One Click LCA, among others. We are not limited to a single platform, which means you always get the most accurate and appropriate analysis for your project.

Q5. How accurate are the simulation results? 

Our simulations use actual hourly weather data for your specific location and are built on internationally validated engines like EnergyPlus — the same engine used for LEED and IGBC certifications worldwide. For existing buildings, we calibrate our models against real utility bills to ensure a high degree of accuracy before making any recommendations.

Q6. What types of buildings do you work with? 

We work across virtually all building types — office buildings, IT parks, hospitals, hotels, schools, universities, retail malls, warehouses, manufacturing facilities, residential apartments, airports, and more. We have experience across India’s diverse climate zones, from hot & dry Rajasthan to warm & humid coastal regions and composite climates like Delhi and Kolkata.

Q7. What is ECBC compliance and how can simulation help? 

The Energy Conservation Building Code (ECBC) sets minimum energy efficiency standards for commercial buildings in India. The most flexible compliance path — the Whole Building Performance Method — requires an energy simulation that proves your proposed building consumes less energy than a standard baseline building. We prepare both the baseline and proposed models, generate compliance documentation, and provide full support during authority submissions.

Q8. Can simulation help achieve green building certifications like LEED or IGBC? 

Absolutely. Energy simulation is a core requirement for green building certifications. For LEED, it can earn up to 21 points under Optimize Energy Performance (EAc1). For IGBC and GRIHA, simulation-based energy performance is similarly critical. We handle all simulation requirements for certifications seamlessly, helping you maximize your score while keeping costs in check.

Q9. What is CFD simulation and when is it needed? 

Computational Fluid Dynamics (CFD) simulation creates a detailed 3D visualization of airflow, temperature distribution, and thermal comfort within spaces — far beyond what standard energy models can show. It is especially useful for large atriums, auditoriums, hospitals, data centers, clean rooms, naturally ventilated buildings, and any space where HVAC performance or occupant comfort is critical.

Q10. What deliverables will I receive after a simulation study? 

Depending on the scope, deliverables typically include a detailed 3D energy model, annual energy consumption analysis by end-use, monthly energy profiles, peak demand analysis, utility cost estimates, Energy Use Intensity (EUI) benchmarking, parametric comparison of design options, financial analysis (payback, NPV, IRR), compliance documentation, and a comprehensive report with prioritized recommendations. All reports are written to be understood by both technical teams and project stakeholders.

Q11. How long does a building simulation study take? 

Timelines vary based on complexity and scope. As a general guide — a standard energy model takes 2–3 weeks, a daylighting study takes 1–2 weeks, a CFD analysis takes 2–3 weeks, and a comprehensive multi-study package typically takes 4–6 weeks. Rush services are available for time-critical projects.

Q12. How much does a building simulation study cost? 

Our pricing is transparent and project-specific. As a general range — energy modeling starts from ₹50,000, ECBC compliance modeling from ₹75,000, daylighting analysis from ₹40,000, CFD simulation from ₹1,00,000, and retrofit modeling from ₹1,00,000. We offer fixed-price and time-and-materials options, volume discounts for multiple buildings, and long-term partnership rates. Contact us for a detailed, no-obligation quote.

Q13. Can you help with existing buildings, not just new construction? 

Yes. For existing buildings, we create a calibrated baseline model using actual utility data and then model specific Energy Conservation Measures (ECMs) — such as LED retrofits, chiller upgrades, VFDs, cool roofs, and solar PV — to identify the most cost-effective upgrades. Our retrofit reports are also suitable for ESCO and investment-grade audit purposes.

Q14. Do you provide support during construction and after project completion? 

Yes. Our engagement can extend beyond the report. We offer design documentation support, contractor coordination, construction phase monitoring, commissioning support, and post-occupancy troubleshooting. We also provide training to your team on interpreting simulation results and using them for ongoing operational improvements.

Q15. How do I get started with Ensimulated Solutions? 

Simply reach out to us with your project details — building type, location, size, and your goals (ECBC compliance, green certification, energy optimization, or retrofit planning). We’ll review your requirements, suggest the right simulation services, and provide a clear proposal. You can contact us at saibalsaha2@gmail.com or call +91 96818 34475.