Report on the energy assessment of new and existing non-dwellings using Simplified Building Energy Model SBEM — City & Guilds Limited End-Point Assessment Service Industries Revision

    This element focuses on producing comprehensive Recommendations Reports for non-domestic buildings using the Simplified Building Energy Model (SBEM). Learn

    Topic Synopsis

    This element focuses on producing comprehensive Recommendations Reports for non-domestic buildings using the Simplified Building Energy Model (SBEM). Learners will master the creation of a prioritised hierarchy of energy efficiency measures, ensuring alignment with regulatory standards and client needs. Effective communication of the report's value to stakeholders is emphasized to facilitate informed decision-making and compliance.

    Key Concepts & Core Principles

    Exam Tips & Revision Strategies

    Common Misconceptions & Mistakes to Avoid

    Examiner Marking Points

    Report on the energy assessment of new and existing non-dwellings using Simplified Building Energy Model SBEM

    CITY & GUILDS LIMITED
    vocational

    This element focuses on producing comprehensive Recommendations Reports for non-domestic buildings using the Simplified Building Energy Model (SBEM). Learners will master the creation of a prioritised hierarchy of energy efficiency measures, ensuring alignment with regulatory standards and client needs. Effective communication of the report's value to stakeholders is emphasized to facilitate informed decision-making and compliance.

    1
    Learning Outcomes
    3
    Assessment Guidance
    3
    Key Skills
    1
    Key Terms
    4
    Assessment Criteria

    Assessment criteria

    City & Guilds Level 4 Diploma in Non-Domestic Energy Assessment

    Topic Overview

    The City & Guilds Level 4 Diploma in Non-Domestic Energy Assessment is a vocational qualification designed for professionals who wish to become accredited Non-Domestic Energy Assessors (NDEAs). This diploma covers the skills and knowledge required to produce Energy Performance Certificates (EPCs) for commercial and public buildings, including offices, retail units, and industrial premises. The qualification is regulated by Ofqual and aligns with the UK's Building Regulations and the Energy Performance of Buildings Regulations, making it essential for compliance in the property sector.

    The course delves into the complexities of non-domestic building energy assessment, including the use of Simplified Building Energy Model (SBEM) and Dynamic Simulation Modelling (DSM) software. Students learn to calculate energy use, carbon emissions, and asset ratings, as well as to produce recommendations for cost-effective energy improvements. This qualification is critical for meeting legal requirements when constructing, selling, or leasing non-domestic properties, and it supports the UK's net-zero carbon targets by promoting energy efficiency in the built environment.

    As part of the wider Service Industries sector, this diploma bridges construction, property management, and environmental sustainability. It equips learners with a specialist skill set that is in high demand, as all non-domestic buildings must have an EPC when built, sold, or rented. The qualification also provides a pathway to becoming a member of accredited schemes such as Elmhurst Energy, Stroma, or Quidos, enabling assessors to register and practice professionally.

    Key Concepts

    Core ideas you must understand for this topic

    • →SBEM (Simplified Building Energy Model): The government-approved calculation method for assessing energy performance in most non-domestic buildings, using software like iSBEM or DesignBuilder.
    • →Asset Rating: The energy efficiency rating (A to G) displayed on an EPC, based on the building's fabric, heating, cooling, ventilation, and lighting systems, independent of occupant behaviour.
    • →Building Regulations Part L2: The legal standard for conservation of fuel and power in buildings other than dwellings, which sets minimum energy performance requirements for new and existing non-domestic buildings.
    • →Recommendations Report: A mandatory part of the EPC that lists cost-effective energy-saving measures, such as upgrading insulation, installing LED lighting, or improving HVAC controls, ranked by payback period.
    • →Dynamic Simulation Modelling (DSM): A more detailed assessment method used for complex buildings with atypical features, such as atria, mixed-mode ventilation, or advanced control systems, requiring specialist software like IES VE or TAS.

    Learning Objectives

    What you need to know and understand

    • Understand how to produce Recommendations Reports for non-dwellings using SBEM, Understand how to provide a clearly defined and robust hierarchy of energy efficiency measures for non-dwellings, Understand how to communicate the value of a Recommendations Report and how it can be used, Be able to produce Recommendations Reports for non-dwellings using SBEM, Be able to provide a clearly defined and robust hierarchy of energy efficiency measures for non-dwellings, Be able to communicate the value of a Recommendations Report and how it can be used

    Assessment Criteria

    Key criteria assessors look for in your portfolio

    • Award credit for demonstrating accurate data input into SBEM and correct generation of energy performance outputs.
    • Award credit for presenting a clear, justified hierarchy of energy efficiency measures based on cost-effectiveness, carbon reduction, and feasibility.
    • Award credit for clearly communicating how each recommendation can be implemented and its expected impact on energy ratings.
    • Award credit for producing a professional Recommendations Report that includes an executive summary, methodology, and tailored recommendations.

    Assessment Guidance

    Guidance for achieving higher grades

    • 💡When producing the report, always cross-reference SBEM outputs with the original building data to ensure consistency and accuracy.
    • 💡Structure the hierarchy using a clear matrix of capital cost, payback period, and carbon savings to justify the order.
    • 💡Practice explaining recommendations to a non-technical audience to improve communication of value for written assignments.
    • 💡When using SBEM software, always double-check your inputs for building geometry, construction materials, and HVAC system details. Small errors in zone dimensions or U-values can significantly affect the asset rating and lead to non-compliance.
    • 💡In the written exam, ensure you clearly explain the difference between asset rating and operational rating. Examiners look for precise terminology and understanding that the asset rating is a theoretical measure, while operational rating uses actual energy data.
    • 💡For the practical assessment, practice producing recommendations reports that are tailored to the building type. Generic suggestions lose marks; instead, propose specific measures like 'install voltage optimisation for the lighting circuit' or 'upgrade to a BMS with optimum start/stop'.

    Common Mistakes

    Common errors to avoid in your coursework

    • Students often confuse the asset rating with operational energy use, leading to incorrect recommendations.
    • A common error is failing to consider the interaction between measures, e.g., recommending insulation without addressing ventilation needs.
    • Many understate the importance of the Recommendations Report as a decision-making tool, presenting it as a mere formality.
    • Misconception: The EPC rating is based on actual energy bills. Correction: The asset rating is calculated using standardised assumptions about occupancy and usage, not actual consumption, so it reflects the building's intrinsic efficiency, not how it is used.
    • Misconception: SBEM can be used for any non-domestic building. Correction: SBEM is suitable for most simple and moderately complex buildings, but for buildings with complex HVAC systems, natural ventilation strategies, or significant thermal mass, DSM is required for accurate assessment.
    • Misconception: Once an EPC is produced, it is valid indefinitely. Correction: EPCs for non-domestic buildings are valid for 10 years, but if the building undergoes significant modifications (e.g., extension, change of heating system), a new EPC may be required.

    Frequently Asked Questions

    Common questions students ask about this topic

    Before You Start

    Prior knowledge that will help with this topic

    • •Level 3 qualification in a related field such as construction, building services engineering, or energy management, or relevant industry experience.
    • •Basic understanding of building physics, including heat loss, U-values, and thermal bridging, as covered in introductory energy assessment courses.
    • •Familiarity with UK Building Regulations, particularly Part L (Conservation of Fuel and Power), and the Energy Performance of Buildings Regulations.

    Key Terminology

    Essential terms to know

    • Understand how to produce Recommendations Reports for non-dwellings using SBEM, Understand how to provide a clearly defined and robust hierarchy of energy efficiency measures for non-dwellings, Understand how to communicate the value of a Recommendations Report and how it can be used, Be able to produce Recommendations Reports for non-dwellings using SBEM, Be able to provide a clearly defined and robust hierarchy of energy efficiency measures for non-dwellings, Be able to communicate the value of a Recommendations Report and how it can be used

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