Advanced Energy Modeling & Simulation Services
Vardhman Infra provides sophisticated energy modeling and simulation services that enable architects, developers, and building owners to make informed design decisions that reduce energy consumption, lower operating costs, and achieve green building certifications. Using industry-leading simulation engines — including EnergyPlus, eQUEST (DOE-2.2), and DesignBuilder — our energy analysts create detailed virtual representations of proposed buildings to predict annual energy performance under real-world operating conditions. Our energy modeling practice supports compliance with the Energy Conservation Building Code (ECBC), GRIHA rating requirements, IGBC certification, and LEED energy prerequisites and credits.
Building Performance Simulation & ECBC Compliance
Our energy modeling process begins with a detailed review of architectural drawings, MEP system specifications, occupancy schedules, and local climate data. We build calibrated whole-building energy models that account for envelope thermal properties, glazing performance, HVAC system configurations, lighting power densities, plug loads, and domestic hot water demand. For ECBC compliance, we perform both the prescriptive checklist approach and the whole-building performance method, demonstrating that the proposed design achieves energy savings over the ECBC-compliant baseline building. Our simulation reports include detailed breakdowns of energy end-use by category — heating, cooling, lighting, fans, pumps, and equipment — enabling design teams to identify the most effective energy conservation measures.
Daylighting Analysis & Parametric Studies
Natural daylight is one of the most powerful tools for reducing lighting energy consumption while improving occupant well-being and productivity. We perform daylighting simulations using Radiance-based engines to evaluate spatial daylight autonomy (sDA), annual sunlight exposure (ASE), and useful daylight illuminance (UDI) metrics across occupied floor plates. These analyses inform decisions on window-to-wall ratios, glazing selection, external shading device geometry, and light shelf design. Beyond daylighting, we conduct parametric studies that systematically evaluate the energy impact of design variables — such as insulation thickness, glass type, HVAC system alternatives, and renewable energy options — to identify the optimal combination that meets performance targets within the project budget.
Lifecycle Cost Analysis & Renewable Energy Integration
Energy-efficient design features often involve higher upfront costs, and our lifecycle cost analysis (LCCA) services help stakeholders understand the long-term financial returns. We model projected energy savings over 15- to 25-year horizons, incorporating utility tariff escalation rates, equipment replacement cycles, and maintenance cost differentials to calculate net present value (NPV), internal rate of return (IRR), and simple payback periods for each proposed energy conservation measure. Our team also performs renewable energy integration analysis, sizing rooftop solar photovoltaic systems, evaluating solar thermal applications, and assessing the feasibility of hybrid renewable-grid configurations. These analyses provide a clear, data-driven roadmap for achieving net-zero energy or near-net-zero energy building performance.