Green Box Associates have been working with Radian Housing and Architeture PLB to develop the energy and sustainability strategy for the proposed new homes at Quebec Barracks Bordon. This is the first phase of the regeneration of Whitehill and Bordon Green Town.
All of the new homes will meet the Zero Carbon Hub definition of a zero carbon home the proposed compliant standards for Part L1A 2016 ( now delayed).
The homes are now on site and being constructed, Greenbox Associates continues to work with the Zero Carbon Hub ( Now Buildings Hub) to demonstrate compliance with the new standards, planning conditions and Building Regulations sign off. In addition Greenbox Associates will be conducting post occupancy monitoring to evaluate the performance of the new buildings against the design assumptions.
There are three core requirements which must all be met for a home to qualify as zero carbon:
- The fabric performance must, at a minimum, comply with the defined standard known as the Fabric Energy Efficiency Standard (FEES) and
- Any CO2 emissions that remain after consideration of heating, cooling, fixed lighting and ventilation, must be less than or equal to the Carbon Compliance limit established for zero carbon homes, and
- Any remaining CO2 emissions, from regulated energy sources (after requirements 1 and 2 have been met), must be reduced to zero.
Requirement 3 may be met by either deliberately ‘over performing’ on requirements 1 and 2 so that there are no remaining emissions, or by investing in Allowable Solutions.
We have been working with the Zero Carbon Hub to develop a design specification to achieve these new standards and to develop a strategy for the emerging framework of allowable solutions and looking at carbon offset opportunities both on and off site.
In addition 20 of the new homes will achieve Code level 5 and all regulated energy will be offset on site
The challenge has been to develop highly sustainable houses within the design constraints of the site and to a budget.
- Energy modelling to show compliance with the Zero Carbon Hub standards
- Developing ‘allowable solutions’
- Sustainability and Energy strategy
- Code for Sustainable Homes assessment
- Developing a strategy to reduce over heating
Key Features to achieve the Zero Carbon Hub Standards
- Low U values 0.11 floor and roofs 0,15 Wall
- Triple glazed windows
- Natural ventilation
- High efficiency combination boilers
- Reduction of heat losses through thermal bridge detailing