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Sustainable Design

From the initial design brief, our engineers work closely with the design team to implement design cooperation and coordination to ensure that all inter related sustainability issues are addressed. Our sustainability role can be extended to the construction stage and ensure effective implementation of the sustainable design principles.

Our services include:

  • Daylight and Sunlight studies
  • Energy Statements and CO2/Carbon Emission Reports
  • External Light Pollution studies
  • Indoor Air Quality (IAQ) Strategies
  • Passive Design Strategies
  • Renewable Energy Strategies
  • SBEM Certification
  • Studies of Pollution from Building Services
  • Thermal Comfort Analysis including Percentage of People Dissatisfied (PPD) and Predicted Mean Vote (PMV) and adapting buildings for climate change for BREEAM HEA04 in accordance with CIBSE AM11
  • Water Efficiency Strategies; rainwater harvesting, grey water recycling
  • Energy Saving Opportunity Scheme (ESOS).

Renewable Energy Design

Renewable energy design considers the use of natural resources which can enhance and benefit the energy performance of a building.  The energy profile of a building, along with legislative requirements and financial considerations are balanced against these natural resources.

Whatever the solution we can provide expert advice tailored to your needs As part of the design process, we assess all aspects of renewable energy design, providing a detailed analysis of site suitability, energy and carbon dioxide savings, capital costs, financial benefits and payback times We strongly believe that renewable energy technologies should not be seen as a ‘bolt on’ to pass the Part L tick box.

Whether designing a single small residence or a large scale development we can provide the expertise to provide an impartial view on the renewable energy market enabling the most suitable technologies to be incorporated into your project.

Our renewable energy design services include:

  • Feasibility studies
  • Low / zero carbon and renewable energy reports for inclusion in planning submission
  • Feed-in-Tariffs (FITS), Renewable Heat Incentive (RHI) and legislative advice

Energy Performance Certificates

Energy Performance Certificates (EPCs) are required whenever a property (commercial or domestic) is constructed, sold or let.  An EPC indicates how energy efficient a building is and what impact the building’s energy use has on the environment. They contain information about a property’s energy use and average costs, using a rating system from A (most efficient) to G (least efficient) similar to those used on kitchen appliances.  Energy Performance Certificate regulations state that it is a legal requirement to supply them to potential buyers or tenants before actively marketing your property, or signing a tenancy agreement.

From the 1st April 2018 there will be a requirement for any properties rented out in the private rented sector to normally have a minimum energy performance rating of E on an EPC.  The regulations will come into force for new lets and renewals of tenancies with effect from 1st April 2018 and for all existing tenancies on 1st April 2020. It will be unlawful to rent a property which breaches the requirement for a minimum E rating, unless there is an applicable exemption.

The Energy Performance Certificate also contains recommendations on reducing energy consumption, Carbon Dioxide emissions, improving energy efficiency and energy costs.  The Certificates are valid for 10 years. At NDC, we are experienced in undertaking energy reviews and surveys, offering a full range of services from simple strategic advice to full detailed energy surveys. We assist clients to reduce energy demand by identifying areas of inefficiency and wastage and provide advice on renewable energy installations.  NDC employs a number of registered CIBSE Low Carbon Consultants and a CIBSE Low Carbon Energy Assessor. NDC is approved to issue EPCs up to level 5.

All non-domestic EPCs must be carried out by, or be under the direct supervision of, a trained non-domestic energy assessor, registered with an approved accreditation body. For those wishing to take advantage of the money being provided by the government for the generation of energy through the Feed in Tariff (FiT’s – electrical generation from renewable sources) or the Renewable Heat Incentive RHI’s (Heat generated from renewable sources) an EPC for the building will be required.

Part L (The Conservation of Fuel and Power) of the Building Regulations has seen a significant change in the approach to the design of services. We give clear advice to clients to achieve compliance and are fully conversant with the use of the National Calculation Methodology (NCM) in relation to the Energy Performance of Buildings Directive (EPBD). Why not call 0117 922 1681 and speak to one of our Energy Assessors to discuss EPC certificates and your requirements in more detail, with no obligation.

Display Energy Certificate - DEC

NDC undertake energy assessments and produce Display Energy Certificates (DECs) in line with The Energy Performance of Buildings Directive (EPBD). 

DECs are designed to show the energy performance of public buildings. They use a scale that runs from ‘A’ to ‘G’ – ‘A’ being the most efficient and ‘G’ being the least.

DECs are issued by accredited organisations such as NDC along with accompanying advisory reports that describe measures that can be undertaken to improve the energy efficiency of the building.  

Requirements and Responsibility

The requirements for DECs change slightly depending on the size and purpose of the building.

For buildings that are occupied by a public authority and frequently visited by the public, where the total useful floor area exceeds 250m2 , a DEC and advisory report are required.

The DEC must be displayed in a prominent place. If the building has a useable floor area of less than 1,000m2 the DEC and advisory report will be valid for 10 years.

If the building has a floor area of more than 1,000m2 the DEC will only be valid for 12 months and the advisory report will be valid for 7 years. It is the responsibility of the owner of the building to ensure that a valid DEC and advisory report are in place and that the DEC is displayed in a prominent position.

Energy Saving Opportunity Scheme

ESOS is a mandatory energy assessment scheme for organisations in the UK that employ >250 staff. The Environment Agency is the UK scheme administrator. These assessments are audits of the energy used by their buildings, industrial processes and transport to identify cost-effective energy saving measures.

Who Qualifies for ESOS?

Organisations are required to take part in ESOS are those that on the 31st December 2014:

  • Employs 250 or more people or
  • Employs fewer than 250 people but has an annual turnover greater than €50 million and an annual balance sheet above €43 million or
  • Is a part of a group that includes at least one entity in the UK that meets either of the criteria above

Organizations that are subject to the Public Contracts Regulations are exempt. However ESOS can also apply to Partnerships, Trusts, Universities, and Charities and other not for profit bodies.

ESOS Requirements

To meet the requirements of ESOS and comply with the regulations an organisation must appoint a qualified ‘Lead Energy Assessor’ who will need to conduct an ESOS Assessment to;

  • Measure your total energy consumption for buildings, industrial processes and transport
  • Identify areas of significant energy consumption, accounting for at least 90% of your total energy consumption
  • Identify cost-effective energy efficiency recommendations for areas of significant energy consumption;
  • The submission date for Phase 1 compliance has now passed (5th December 2015), organisations will now need to commence working toward their submission packs for Phase 2 in 2019