The Blewburton Partnership has extensive experience and knowledge throughout the sustainability and energy field. We hope that the following articles will prove useful to your comprehension of this complex subject.

Carbon Footprints

Climate change is now recognised as the most important issue facing the planet today. The majority of global climate scientists accept that the greenhouse gas emissions caused by human activity are impacting negatively on the environment.

The greenhouse gas arising from human activity most commonly discussed is carbon dioxide (CO2).

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SBEM – Parts L1B, L2A and L2B of the Building Regulations

SBEM, or Simplified Building Energy Model, provides an analysis of the predicted energy performance of a building.

The SBEM calculates the monthly carbon dioxide emitted based on the calculated energy demand of a building given its construction, geometry, use type, lighting equipment and plant (HVAC).  

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Display Energy Certificates (DECs)

A DEC shows the energy performance of a building based on actual consumption as recorded annually. The DEC provides the Operational Rating (OR) of the building. The difference between an EPC and a DEC is that the EPC calculates a carbon emissions based index using information relating to building design,

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Commercial Sector Energy Performance Certificates (EPCs)

An Energy Performance Certificate (EPC) is a certificate which demonstrates the Asset Rating (AR) of a building.  Their requirement for UK buildings has been driven by the adoption of the EU Energy Performance of Buildings Directive (EPBD).  With over 40% of the UK’s energy consumption and carbon emissions produced by buildings and their construction,

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Renewable Energy

Legislative, social and economic forces are driving a change in energy provision from the traditional carbon based technologies to more sustainable and renewable options. As with any change, this leads to uncertainty and concern when adopting new technology and practices. The Blewburton Partnership is able to facilitate and smooth over these concerns as we move towards a zero-carbon economy.

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Renewable Energy Statements – The ‘Merton’ Rule

There are over 170 local planning authorities that have or are in the process of bringing in policies that will require a percentage of annual site energy requirements for new development to be generated by on-site renewable/sustainable energy sources. These policies vary in magnitude (10% being the most common figure,

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The Code for Sustainable Homes

The Code for Sustainable Homes (the Code) is an environmental assessment method for rating and certifying the performance of new homes. It is a national standard for use in the design and construction of new homes with a view to encouraging continuous improvement in sustainable home building. The Code is based on EcoHomes© (Yates et al,

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Domestic extensions, building change of use, renovations and refurbishments

Part L1B of the Building Regulations

Part L1B of the England and Wales Building Regulations covers extensions, building change of use, renovations and refurbishments. Part L1B is more complex than Part L1A and open to a degree of interpretation, dependent on the works being undertaken. Below is a brief outline of the key areas it affects.

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Air Pressure Testing

Air leakage (also known as air permeability or air infiltration) is the air tightness of a dwelling through uncontrolled means such as cracks and gaps in the building envelope. Any ventilation system installed in a building is classified as a source of controlled air flow and is therefore not considered as air leakage.

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Domestic Sector New Build Energy Performance Certificates (EPCs)

On completion of a new build dwelling, the local Building Control Department will ask for submission of a notice which includes an energy rating to demonstrate the building complies with Part L of the Building Regulations. They may also require a copy of the EPC and evidence that this is available to the owner of the building.Part L of the Building Regulations underwent a detailed revision in 2006.

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