The feasibility study is now well underway, and a key part of this has been produce an estimate of the current heating demands from the approx. 1000 houses in Kings Langley. 

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To model the total heating demand of the town, we used a combination of government published datasets, including:

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1. EPC Data. Since 2007, all homes sold in the UK must have an Energy Performance Certificate (EPC). An assessor visits the property, and appraises the energy efficiency of the walls, windows, roof and heating system. This information, combined with quite a large number of assumptions, is used by the assessor to estimate the current water heating costs. 

2. Gas metered data. The government department of Business Energy and Industrial strategy (BEIS) has published gas metered data, aggregated by postcode, since 2015. The data also contains the number of meters aggregated per postcode.

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These two datasets allow us to combine a “bottom up” measure of building energy performance with “top down” aggregated gas usage. Using a bespoke algorithm, roughly based on work performed for the Greater London Authority (GLA), we mapped the heating and hot water demands for all buildings across Kings Langley.

 

You can explore the results below: