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Bristol City Council

… ²/ yr ) PHPP modelling to achieve 40kWh/m2/yr The Policy Option A requirement for total energy use is achievable by all scenarios using a heat pump for space and water heating, except for the UKGBC 2025 scenario, which does not achieve it due to the very large additional current allowance for miscellaneous electrical energy consumption. Furthermore, the current and future policy scenarios…

… Executive Summary An evidence base for net zero operational carbon buildings The purpose of this report is to provide a technical evidence base to support the energy performance requirements of a high-rise block for Bristol City Council. The report should be read in conjunction with the technical evidence base for new housing, prepared for Cornwall Council in June 2021. It assumes that similarly…

… to the CC report, the current policy requires new homes to achieve a space heating demand of less than 30kWh/m2/year, a total energy use of less than 40kWh/m2/year, and a net zero energy balance on site through use of solar photovoltaics. Evaluation of policy options Seven policy scenarios were assessed for a high-rise building type (16 storeys) through detailed energy and cost modelling. Policy…

… homes for a construction cost between 2.4-3.0% more than a home that is compliant with Part L 2021. Cost differences are expected to decrease over time as experience and markets for low carbon buildings grow. • Electricity use calculated by energy modelling relates well to metered electricity use data, supporting the use of total energy use targets. Total energy use targets from RIBA, UKGBC…

… energy use of less than 40kWh/m2/annum; and • On-site renewable generation to match the total energy use, with building mounted solar PV. The technical assessment (Section 2.0) demonstrates that it is technically feasible for a high-rise building type to: • Achieve a space heating demand between than 15-20kWh/m2/annum • Achieve a total energy use of less than 35kWh/m2/annum • Install…