Energy Modelling

SustainErgy provides whole-building energy modelling to help organizations understand how their buildings perform today, evaluate future design or retrofit options, and make informed, defensible decisions before capital is committed.

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Many organizations face uncertainty when planning new construction, major renovations, or retrofit projects:

Lack of Impact Visibility

Limited visibility into how design or system changes will affect energy use and emissions

Inconsistent Option Evaluation

Difficulty comparing options on a consistent, data-driven basis

Compliance & Target Uncertainty

Uncertainty around code compliance, performance targets, or funding requirements

Uncalculated Investment Risk

Risk of investing in measures without a clear understanding of outcomes

Energy modelling reduces this uncertainty by translating building designs and operating conditions into measurable performance outcomes.

How We Apply Energy Modelling

SustainErgy applies energy modelling as a decision-support tool, not just a compliance exercise.

We establish a representative baseline using available drawings, specifications, utility data, and operational inputs.

A whole-building energy model is developed to reflect envelope performance, HVAC systems, lighting, plug loads, schedules, and local climate conditions.

Where applicable, models are calibrated against measured utility data to ensure alignment with real-world performance.

Proposed design changes, system upgrades, or retrofit measures are simulated to understand their impact on energy use, emissions, and operating costs.

Outputs are translated into clear insights that support planning, compliance, funding applications, and capital decision-making.

Service Scope & Outputs

The Energy Modelling service includes the development and application of whole-building energy models to support planning, evaluation, and decision-making across new construction, renovation, and retrofit projects.

Typical scope and outputs include:

Service Overview

Review of available drawings, specifications, utility data, and operational information

Data Gathering & Review

Development of a whole-building energy model representing envelope, HVAC systems, lighting, plug loads, schedules, and local climate conditions

Comprehensive Model Development

Establishment of baseline and reference scenarios appropriate to the project context

Baseline & Scenario Setup

Calibration of models to measured utility data for existing buildings, where applicable

Model Calibration

Simulation of proposed design options, system upgrades, or retrofit measures

Simulation of Proposed Measures

Comparative analysis of energy use, greenhouse-gas emissions, and operating cost impacts

Comparative Impact Analysis

Clear summary outputs suitable for internal decision-making, stakeholder review, and funding or compliance documentation

Actionable Reporting & Documentation

Clear summary outputs suitable for internal decision-making, stakeholder review, and funding or compliance documentation.