Why do commercial buildings need an energy rating report?
A new commercial building must meet the energy efficiency requirements of the National Construction Code (NCC). For construction within Classes 2-9, the necessary compliance is either a:
- Section J Report, also known as Deemed-to-Satisfy (DTS), or
- JV3 Report, also known as Verification Method using Energy Modelling
While there are many energy rating business who will give you a report to meet compliance, it is important to understand that if done well, your report will greatly reduce your overall construction costs and increase the value of your building with a higher energy efficiency outcome.
Floyd Energy® has qualified and experienced energy raters for both Section J and JV3.
What is a Section J Report?
Section J Report highlights the energy efficiency requirements for commercial buildings class 3, 5, 6, 7, 8, and 9.
Your Section J Report will be conducted by one of two methods:
- Assess the design elements of your proposed development against the Deemed to Satisfy (DTS) provisions of the National Construction Code (NCC), or
- Assess the design with a verification method, also known as JV3, that uses thermal simulation of the proposed development against a reference building that meets all the DTS requirements of the NCC Section J.
The Section J Report assesses various criteria including:
- The building envelope (roof, floor, exterior doors, windows and exterior walls)
- Building sealing, including windows, doors, chimneys, flues, exhaust fans.
- Air-conditioning and Ventilation Systems
- Lighting and Power
- Hot Water Supply, Swimming Pool, Spas
What is verification method JV3?
Verification method JV3 assesses your proposed commercial building directly against a reference building that complies with the DTS provisions to determine the annual energy consumption. This quantifiable benchmark is the pre-determined acceptance criteria that your building design must meet.
The annual energy consumption for the proposed building is then calculated using the same thermal calculation method.
Benefits of JV3 Assessments
A JV3 assessment is most often implemented when a commercial building struggles to pass the deemed to satisfy (DTS) within the Section J assessment process.
But, the benefits of the more detailed modelling used within the assessment allows for greater flexibility in design and the ability to trade performance between different building elements. This usually means you will save in construction costs.
Whilst a JV3 thermal assessment may cost more when compared with a Section J Report – as the assessment takes longer – this upfront cost should be offset with the lower total cost of construction and the ultimate lifetime value of the building that has greater energy savings, as well as the health, wellbeing and comfort of the occupiers.
Difference between JV3 and Section J
The main difference between the two energy assessments is that a Deemed to Satisfy (DTS) is usually quick and easy to calculate within a Section J, but in almost every case the DTS-compliant building will cost more and is unlikely to be as efficient as a JV3 compliant building.
Also, Section J assessment doesn’t require the complicated simulation that a JV3 assessment does.
Who can conduct a Section J or JV3 Report?
Section J and JV3 are specialised energy rating reports and should be conducted by an appropriately qualified and experienced assessor. We are expert in building thermal simulation and have extensive technical knowledge in building physics.
What does Floyd Energy® recommend for commercial building energy rating?
JV3 requires advanced thermal modelling and is primarily used when compliance via DTS is not possible or where substantial construction cost savings can be made.
How long will the assessment take?
JV3 assessment is a detailed energy modelling and takes longer than DTS. The assessment usually takes about a few weeks on average. However, it really depends on the type, size and complexity of your commercial building designs.
How to get your report started?
Head to our Energy Rating Report page to fill in your details for a free quote to conduct your Section J or JV3 Report. We require your building plan or design to provide an accurate quote for work.
Don’t risk getting your Section J or JV3 Report wrong
Be wary of building energy rating companies who promise quick turnarounds and low costs. To do an accurate Section J or JV3 Report takes time and skill, and the upfront cost for a quality report will save in long-term cost savings and occupier comfort making the building more valuable.
It is also becoming more commonplace for building owners and occupiers to resort to litigation to resolve non-compliant building materials and design.