INDUSTRY, INNOVATION AND INFRASTRUCTURE Sustainability Report 27 Designing a new blueprint for housing Parklands zero carbon homes We’re delivering increasingly sustainable homes that are affordable, adaptable, energy-efficient and designed for modern life. Sustainable homes 12% OF HOMES COMPLETED USING MODERN METHODS OF CONSTRUCTION Our goals • To create sustainable homes (affordable, efficient, low carbon and adaptable). Our progress in FY21 • Commenced trial of battery assisted generators • Average home kWh/m 2 of 88.6 • 12% of homes completed using modern methods of construction. Our approach to the design of homes is to focus on affordability, comfort and increasingly lower carbon homes located in sustainable communities. We are updating our standard designs and trialling technologies to ensure the homes we build are increasingly energy efficient, lower carbon and affordable – an issue of increasing importance after a 12% rise to the energy price cap in October 2021. 3 We’re outlining a detailed roadmap for the development of our new Future Homes designs to deliver flexible living spaces, fabric performance and overheating prevention, with the aim of reducing energy consumption. Our roadmap will integrate renewable energy solutions, smarter energy controls and storage solutions. FUTURE HOMES STANDARD EXPECTED MILESTONES Part 1 Timescale Carbon reduction Strategy and technology 2021-2023 31% Space heating reduced by increased thermal performance, reduced air leakage, efficient ventilation. Solar PV to offset carbon in use. Part 2 Timescale Carbon reduction 2025 at least 75% Strategy and technology Removal of gas boilers in place of all electric renewable technologies and energy generation. 3 Energy prices and their effect on households (ONS, February 2022) To address our broader sustainability priorities, we’ve focused on increased standardisation and sharing our digital designs with our supply chain to enhance the use of offsite pre-manufactured value and on-site assembly. This will support waste reduction and improve quality in delivery. This approach resulted in: • Standard house types making up 78% of homes constructed in the year • Modern methods of construction (timber frame and full volumetric solutions) accounted for 12% of homes completed in the year • The specification of homes for very low water consumption of 83.7 litres per person per day (LPPPD) • All new developments from FY21 benefit of 1 Gigabit Day One connectivity, access to a choice of Wi-Fi providers and access to bespoke lower cost options for low-income households. Low cost energy Our partnership with Manchester City Council and Heylo Housing in West Gorton has introduced the latest smart home technology in five trial homes to evaluate the impact of emerging technologies running costs, comfort and energy consumption as a result of interaction with the grid. The brick homes have an enhanced fabric performance with rigid insulation. They also have dual aspect solar PV panels, linked to battery storage to generate and store energy. This is managed using smart technology from Wondrwall. The home is provided with a ‘brain’ which senses movement, humidity, temperature, light and sound to optimize energy consumption around the home. It also enables the home to export surplus energy from the battery back to the grid and import energy when tariffs are low, creating both an income for the customer and the opportunity to buy and store affordable electricity. Wondrwall has now completed 12 months of post-occupancy monitoring, finding a 1.8 tonnes of CO 2 reduction annually per home, with energy bill savings of up to £559 per year, 74%, in its report dated October 2021. Energy demand was reduced in all homes to cost and environmental benefit. Gedling Access Road (GAR) As part of our Chase Farm development on the former Gedling Colliery we have contributed £17m (42%) to the construction of the Gedling Access Road. While new roads are not traditionally considered a sustainable feature of a development, the bypass addresses a number of long-standing transport issues for the village, with the A6211 currently seeing 15,000 vehicles a day (one of the busiest stretches of road in the region). Following completion in 2022 the existing road will be retained, providing a quieter route for local traffic, buses, cyclists and pedestrians. Overall, the construction provides significant carbon reduction from reduced congestion, reduced travel time and local disruption from traffic, with improved air quality for local residents. To compensate for impacts on biodiversity and deliver a net gain, there will be a 40% increase in woodland and the adjacent country park will increase in size with new non-motorised access points from the bypass and the Chase Farm development.
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