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Bristol City Council

… for around 110 rooftop solar panels if they are mounted in an East/West type concertina array, whereas 220 panels could be fitted in a monopitch arrangement. Over 500 panels could be accommodated by optimizing the roof to create a pair of large monopitch solar arrays, while also using the southwest façade. For Option A, 503 panels with this arrangement are required to achieve net zero on site…

… Cost Modelling | High-rise Flats – Capital cost comparison To ta l B ui ld C os t ( pe r u ni t) £250,000 £200,000 Solar PV Heating system Fabric efficiency Baseline build cost Investment required to address the climate emergency – Case A The cost comparison graphs in this and the following page, include two different cases of façade mounted solar panel prices for Options…

… 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…

… that: • it is possible to achieve net zero carbon homes using best practice on- site solar PV design and specification. Generally, some high-rise buildings may require additional off-site renewable energy generation to achieve a net zero energy balance due to site or design constraints. • It is important to note that a solar tenant model approach, distributing the solar energy generated to all flats, instead…

… shown that it provides a more reliable prediction of a building’s space heating demand and energy use relative to Part L calculations. DesignPH is used in combination with PHPP to provide more accurate shading analysis, based on a 3D model of the building and its surroundings. We have also used the European Commission’s PVGIS tool to calibrate solar generation calculated by PHPP. Approach…