HECA Data Report For Chiltern District Council Prepared by the United Sustainable Energy Agency 1 HECA data report for Chiltern District Council Contents Introduction ............................................................................................................................................ 3 Objectives and reporting methodology. ............................................................................................ 3 Section 1 – Background Data ............................................................................................................. 4 Energy , CO2 and Insulation data ................................................................................................. 4 Domestic energy consumption ................................................................................................... 4 Carbon emissions ......................................................................................................................... 5 Housing energy efficiency ........................................................................................................... 5 Hard to Treat Homes ................................................................................................................... 8 Renewables................................................................................................................................... 9 Demographic data .......................................................................................................................... 10 Increasing population ................................................................................................................. 10 Ageing Population ...................................................................................................................... 10 Fuel poverty and deprivation .................................................................................................... 11 Benefits ........................................................................................................................................ 11 Overall Assessment of Background Data ................................................................................... 12 Section 2 – Mapped Data ................................................................................................................. 14 Energy and insulation maps ......................................................................................................... 14 Demographic maps ........................................................................................................................ 26 Section 3 - Overall Assessment of Mapped Data ......................................................................... 34 Section 4 – Analysis and Recommendations ................................................................................ 36 Local energy efficiency ambitions ................................................................................................ 36 Links to financial assistance ......................................................................................................... 37 Area based approaches ................................................................................................................ 38 Section 5 – Additional Information ................................................................................................... 40 Acronyms ......................................................................................................................................... 40 Information about mapping techniques used in this report ...................................................... 40 Data Health Warning ..................................................................................................................... 40 2 Introduction This report has been compiled by USEA for Chiltern District Council. It has been produced in order to aid the interpretation of information needed for the production of the Council’s first HECA report. This report is required as per the ‘Guidance to English Energy Conservation Authorities (ECA’s) pursuant to the Home Energy Conservation Act (HECA) 1995’ issued by the Department of Energy and Climate Change (DECC) in July 2012. Objectives and reporting methodology. The purpose of this report is twofold. Data has been compiled, analysed and displayed in order that Chiltern District Council has easy access to information. This information can be used to 1) formulate its ambitions and priorities with respect to energy saving in the domestic sector, and 2) to enable activity to be targeted and planned. 1. Formulate ambitions / priorities with respect to energy saving in the domestic sector. Information can be used to enable the council to: o Set a realistic residential energy saving or related emissions target. o Identify the most efficient way to achieve the biggest reduction in energy consumption – which measures will take precedence given knowledge of measures already installed etc. 2. Target and plan activity: o Identify which areas would warrant further action to tackle fuel poverty and what the focus would be in terms of measures. o Refine whether an area based approach is viable, and if so, where would it take place and which measures would it prioritise. o Outline which measures (or mix of measures) would enable the council to meet its overall targets and would these be compatible with the Energy Company Obligation (ECO) / Green Deal etc The HECA data reporting service involves obtaining, analysing and interpreting datasets relating to energy consumption and socio-economic factors for Chiltern District Council. The data used in this report has come from a variety of sources. This report is NOT intended as a definitive resource for targeting measures but instead should complement local knowledge and resources and should be treated as the first step in identifying future actions. The datasets used in the production of this report include: Gas and electricity consumption data at the middle and lower level super output areas Fuel poverty data Benefits data and Index of Multiple Deprivation (IMD) CO2 emissions by Local Authority area Cavity wall and loft insulation installed under the Carbon Emissions Reduction Target Off-gas and solid wall data from the Centre for Sustainable Energy Domestic Photo Voltaic installations under Feed in Tariff (FiTs) scheme Census data (2011) and other Office of National Statistics (ONS) data. Insulation data from the Energy Saving Trust’s Home Energy Efficiency Database (HEED3) 3 Section 1 – Background Data This section summarises important background data which cannot be mapped. This information is likely to have some relevance in informing the development of future policies, plans and actions with respect to the Home Energy Conservation Act 1995. Information is presented in table form with some graphs were appropriate. Energy, CO2 and Insulation data Domestic energy consumption Average domestic gas and electricity consumption for Chiltern 2005 2006 2007 2008 2009 2010 Average Domestic gas kWh 24,914 24,058 23,673 23,014 21,277 21,050 Average Domestic electricity kWh 5,667 5,577 5,533 5,242 5,205 5,255 http://www.decc.gov.uk/en/content/cms/statistics/local_auth/interactive/domestic_ge/index.html 30,000 25,000 20,000 Average domestic gas 15,000 kWh Average domestic 10,000 electricity kWh 5,000 - 2005 2006 2007 2008 2009 2010 Figure 1 – Domestic Energy Consumption in Chiltern in kWh Domestic energy consumption has fallen mainly due to a 15.5% drop in gas consumption. This is in line with the average for England of a 20% fall. Electricity use only fell by 7.3 %; this fall is also in line with the average fall in electricity consumption in England of 9.8%. In 2010 gas consumption in Chiltern was significantly higher than the English average of 15,156kWh, average household electricity consumption in the district was also considerably higher than the English average of 4,148 kWh. The district does not have a large number of solid wall or off gas properties that would normally explain such high energy consumption. It is therefore likely that the high consumption is due to a combination of affluence and low levels of insulation. In 2010 electricity consumption actually rose after consistently falling for the previous 5 years. 4 Carbon emissions Domestic CO2 emissions for Chiltern District 2005 2006 2007 2008 2009 2010 Emissions domestic 111.3 116.1 116.2 109.7 99.1 102.6 electricity kt CO2 Emissions domestic 151.9 147.5 142.2 147.6 133.3 149.2 gas kt CO2 Emissions other 9.2 9.4 8.8 9.1 9.1 9.9 domestic fuel kt CO2 Total domestic 272.4 273 267.2 266.4 241.5 261.7 emissions kt CO2 Domestic emissions 3 3 2.9 2.9 2.7 2.9 per capita t CO2 http://www.decc.gov.uk/en/content/cms/statistics/local_auth/co2_las/co2_las.aspx 300 250 Emissions domestic 200 electricity kt CO2 Emissions domestic gas kt 150 CO2 Emissions other domestic 100 fuel kt CO2 Total domestic emissions 50 kt CO2 0 2005 2006 2007 2008 2009 2010 Figure 2 - Domestic CO2 emissions for Chiltern District in kilo tonnes of CO2 Domestic CO2 emissions barely fell between 2005 and 2010. Emissions in 2010 were actually higher than for 2009. A revision of the gas consumption conversion factors is probably the reason why emissions from domestic gas use actually rose. Chiltern is unusual in having such a large differential between emissions from gas and electricity use. Housing energy efficiency The following data sets have been drawn from the Energy