BY NYC Energy Code Team ON 6 January 2025

What Is Energy Modeling and Why Is It Key to Energy Efficiency

Eco-friendly and energy-efficient buildings are now a must for cities with existing high-rises or places where real estate development is starting. Any activity that changes the existing characteristics of a location (including erecting high-rise residential and commercial buildings) also affects the environment. Even after the building is complete, its utilities, operations, and use methods continue to affect the environment.

Several state and federal authorities now prefer energy-based modeling of a building before approving construction. This article discusses the factors and reasons linked with energy modeling, emphasizing buildings.

Energy Modeling – A Short Explanation

Energy modeling is a vital programming tool that governments, businesses, and even individuals can use to foresee, evaluate, and optimize energy utilization through energy modeling programs. The software creates a virtual energy system illustration, identifies the factors that affect energy consumption, and assesses energy usage under different circumstances.

The software modeling provides directions to increase energy efficiency and achieve sustainability targets for high-rise structures.

How Does Energy Modeling Relate to Buildings?

The principles of energy modeling also extend to the construction of high-rise buildings. One can use physics-based software for building energy modeling (BEM) that requires the following as input:

  • Type of construction materials.
  • Building description, including its geometry.
  • Lighting fixtures.
  • Refrigeration and water heating.
  • HVAC
  • Efficiency of the components.
  • Configuration of the renewable generation system.
  • Plans for energy control.
  • Here are some other factors that energy modeling software requires to create virtual systems:
  • Schedules of occupancy
  • Time limit for occupancy, lighting, thermostat settings, and plug loads.
  • How Does the Software Work?

    The program combines the inputs with information about local weather and implements physics equations to calculate thermal load and system response, energy use, tenant comfort, and energy costs. These programs can give a year's data within an hour or less while considering system interaction (like lighting and heating/cooling).

    Implementing the Energy Modeling Codes

    The implementation process of energy modeling programs follows specific steps, which can change as per the project. However, the general methods of this process are mentioned below:

  • Data collection : At first, the user of the modeling software will collect data on the building's probable energy consumption patterns. They can use methods like metering, energy audits, and other data collection to achieve it.
  • Modeling : The data is then used to produce a virtual representation of the energy system – including a detailed model of the equipment, building, and other energy-consuming systems.
  • Analysis : This model is then used to test energy use patterns and identify areas of inefficiency, such as lighting, temperature control systems, and other instruments.
  • Energy consumption optimization : The analysis enables users to develop plans to enhance energy consumption and reduce costs – such as rearranging operating times, upgrading equipment, and implementing energy management systems.
  • Monitoring : The process will continue; however, it is vital to regularly check the energy usage data. Monitoring the systems will enable users or organizations to recognize and solve inadequacies and optimize energy consumption in the long run.
  • Use-Cases of BEM

    Architects and related personnel use diverse energy interaction models to get answers to questions that affect energy compliance and utilization significantly. Some of the vital use cases of energy modeling in buildings are given below:

  • Design and running of HVACs : HVAC systems can be large and complex in commercial buildings. Engineers can use BEM data to design HVAC systems that efficiently meet buildings' thermal loads. They can also design and examine control strategies with this information.
  • Architectural projects : Architects can use energy modeling software to create energy-efficient buildings virtually and calculate the balance between the operational energy cost and up-front construction expenses. In many instances, BEM can lessen both construction and energy expenses.
  • Analysis of building stocks : The architects utilize the BEM data to analyze the prototype models to get a first-hand idea about energy code and standards compliance. The information from energy modeling programs helps local governments or utility companies plan large-scale programs with optimal energy efficiency.
  • Rating of building performances : The programs can assist in measuring the inherent building performance (IBP) while monitoring specific operations and uses. The IBP data originates from green certification, economic motivations, and code agreements.
  • Why is Energy Modeling Important in Energy Efficiency?

    The main targets of energy models are to ensure that the establishments or structures don't harm the environment and have the minimum energy footprint possible. Taking the help of professionals will provide the following benefits to any large-scale project:

    1. Sustainability

    Energy codes and regulatory compliance rules often call for sustainable energy consumption methods. Energy modeling will help analyze energy usage patterns and identify areas for improvement. It will also help federal and trading companies reduce their carbon footprint and generate a cleaner and more sustainable future.

    2. Cost Efficacy

    Energy modeling can help determine the optimal size and location of energy-consuming machines, such as cooling and heating instruments and lighting. This information can help organizations save money by detecting energy-inefficient areas, reducing energy consumption, and lessening costs.

    3. Risk Management

    Energy use comes with associated risks, like supply disruptions and price unpredictability. Energy modeling enables users to create preemptive strategies to resolve these issues and provide a stable, dependable, and guaranteed energy supply.

    4. Agreement

    In most cases, organizations are legally directed to comply with energy standards and regulations. Energy modeling programs can help businesses meet the specific requirements of certification programs and building codes.

    Concluding Statement

    Non-compliance with the existing energy consumption regulations will result in hefty fines and troublesome and costly corrections in the building structure. So, builders and property developers should hire professionals from The Cotocon Group to avoid these problems.
    We will help you in several matters, from creating an energy model to finding the right financing options and becoming a part of a greener future.

    Professional solutions

    Frequently asked questions

    Creating an energy model before building construction will help save colossal investment and environmental costs. A structure not complying with the existing energy codes and regulations will be destined for costly remodification or demolition. So, it's best to ensure the project's energy footprint before construction.

    Air conditioning and heating machines use electricity from fossil, natural, or nuclear fuel to function while emitting environment-harming gases. As a building usually contains several of these instruments, they significantly affect its IBP.

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