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Monthly Archives: June 2012
Delivering Energy Efficiency in London
31 May 2012: Think tank Future of London having been working with local authorities and other key energy efficiency delivery agents in London over the past few months considering how the Government’s Green Deal programme can be successfully implemented in the capital. The result of these discussions have been published today in a report entitled ‘Delivering Energy Efficiency in London‘. The role of local authorities and other local partners is – as DECC states on its website – “likely to be key in ensuring effective and intensive delivery of the ECO and Green Deal in particular areas.” Hence the findings by Future of London are of particular interest, and include:
- The capital faces a big challenge to make the most of the Government’s new approach to improving energy efficiency through the Green Deal and ECO programmes
- Contributing factors to the installation of energy efficiency measures being more difficult and costly in London include:
-The increased cost of parking and the congestion charge in London
– The particular characteristics of the London housing stock with a high proportion of solid wall properties and large blocks of flats that are harder to insulate
-The lack of accredited suppliers and installers within the M25
– And the increased difficulty with planning processes in London owing to the high volume of properties in conservation areas, and the need for external wall insulation on solid wall properties.
Ways in which boroughs could encourage consumer demand for the Green Deal include:
- Promoting the scheme through council media and public-facing staff such as social workers or housing officers;
- Using data from tax records, planning information and previous energy efficiency schemes to identify properties that could benefit from the Green Deal;
- Working with faith groups, tenants and residents associations and other community groups to promote the Green Deal and energy efficiency.
The research sets out some really interesting points which Government will need to ensure they take into account in their formulation of the Green Deal. These include:
- London contains an estimated 600,000 homes within conservation areas – almost half the national total – where planning laws are tighter in order to protect the character of historic buildings. One of the most efficient ways of insulating solid walls is through external cladding – in a conservation area this procedure is likely to require planning consent. At the very least, this will increase the time and bureaucracy involved in treating London homes, making it more likely that the ECO money will be directed to other regions.
- The number of high-rise buildings in London presents a similar problem that was frequently flagged up in interviews conducted with practitioners working across the Capital. 38 per cent of homes in London are in blocks of flats, nearly triple the amount in any other region. This can drive up costs in a variety of different ways.
- Much of the research on the Green Deal to date has suggested that a lack of consumer demand is the principle barrier to the scheme’s success. For example, even the Government’s own figures project a 93 per cent fall in the number of lofts insulated annually and a 67 per cent drop in the number of cavity walls.
- Boroughs have had difficulty giving away energy efficiency improvements for free, marketing the Green Deal will represent a considerable challenge.
- A participant suggested that ‘[Green Deal] assessors will need to be in people’s homes for about three hours. It’s a long time, and some residents will be uncomfortable with that’.
- It was also noted that, while some Boroughs had been interested in providing a loft clearance service as part of previous energy efficiency schemes, they had been advised against doing so by the Council’s insurance officers.
- experience of staff from an affluent inner London Borough interviewed as part of our research suggests that, for very different reasons, wealthier households may decline to participate in the Green Deal. They told us that “we have had little success reducing emissions from richer households because saving a few hundred pounds a year isn’t worth the hassle to them.”
Download the report here.
Shaping cities for health
May 2012: Researchers have set out in a paper published in the most recent issue of The Lancet that climate change will mean that London will have temperatures more like Hong Kong in the future. Shaping cities for health: complexity and the planning of urban environments in the 21st century highlights that:
The research paper highlights that: “There are 3·2 million dwellings in London, almost all of which will need some modification to meet decarbonisation targets. This huge scale of refurbishment presents enormous and complex challenges—in part because of the nature of London’s buildings. This stock is not only diverse in its construction methods, which span several centuries, but also in ownership. The level of energy efficiency of the stock is also highly variable. Many properties have already undergone some energy efficiency refurbishments that are not, however, adequate for the 2050 commitment. Indeed, these moderately refurbished properties might provide the greatest retrofit challenge.”
The paper picks up on a potential health issue associated with improving the energy efficiency of homes as a result of increasing the air tightness of homes.
“One of the key problems for retrofit policy is to ensure that greater energy efficiency does not compromise health. If energy efficiency is in part achieved though greater ventilation control (reductions in air exchange), ventilation might become insufficient to remove pollutants from indoor sources. Conversely, uncontrolled ventilation impairs protection against outdoor pollution. The optimum ventilation rate for buildings has not been adequately researched, but decarbonisation strategies are prescribing ever tighter ventilation controls. For example, in a mechanical ventilation with heat recovery (MVHR) system, warm, moist air is extracted from kitchens and bathrooms via a duct system and is passed through a heat exchanger before being released into the environment. …Mitigation measures might affect health through a range of pathways, several of which are likely to be as important as the usual exposures, if not more important. Thus a wider array of pathways than has been attempted previously should be considered. Encouragingly, there is at least a growing recognition of the associated complexities, and, for example, relevant guidance for the Building Regulations for England and Wales is continually updating its treatment of building-material permeability and ventilation control.”
“…world’s largest solar bridge”
Solid Wall Insulation Project in East London
June 2012: London has a high incidence of solid wall homes and as such has been poorly served by existing national energy efficiency schemes, which – with the exception of the troubled CESP programme – have not included support to solid wall insulation (SWI). The forthcoming Green Deal and Energy Company Obligation – scheduled to start in October of this year – are to change that, with the Government very strongly focusing on a significant uptake in SWI. Such projects are not without their difficulties – being much more complex to install and fairly invasive when insulation is fitted on the inside wall of solid wall homes (Internal Wall Insulation – IWI), hence, there is much to learn from projects currently underway. An External Wall Insulation (EWI) project has recently been completed on the Coventry Cross estate in Poplar, Tower Hamlets with the “energy efficient retrofit expected to cut residents’ energy costs by as much as 25% while achieving greater comfort.” Further information is provided on the following news release. Further information can be found here.
Posted in Energy Efficiency, News
Tagged CESP, Green Deal, insulation, Solid Wall Insulation, Tower Hamlets
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Parity Projects a winner!
May 2012: South West London business Parity Projects has been selected as a winner for a prestigious Ashden Award. The company has extensive experience in helping identify how households can improve the energy efficiency of their homes and reduce fuel costs. The Ashden website provides a case study on the the company and reports that “so far Parity has given advice to over 700 households as well as 17 social housing providers covering upwards of 240,000 homes, as well as training over 500 people in retrofit.” Further information at www.parityprojects.com.
Camden Climate Change Alliance workshops
June 2012: The Camden Climate Change Alliance have announced that they will be hosting five environmental workshops which will take place between 9am-11am on June 21st including sessions on ‘carbon footprinting’ and raising ‘staff engagement’. Full details here – the workshops will take place at the Council’s Garden Court Chambers, WC2A 3LJ (map here).
Tools for Cooling Urban Heat Islands
June 2012: The Clean Energy Solutions Center (cleanenergysolutions.org) is hosting a series of free webinars including one entitled ‘Global Cool Cities: Tools for Cooling Urban Heat Islands’. Chapter 5 of London’s ‘Climate Change Adaptation Strategy‘ provides detailed information on the challenges faced in urban areas as a result of increasing temperatures and the webinar hosted by Clean Energy Solutions Center will focus on“how cool roof and pavement materials can mitigate urban island heat effects, lower energy costs, and improve the environment.” The webinar takes place on Wednesday, June 13, 2012 2:30 PM – 4:00 PM BST – the link to register is here. Further information on climate change adaptation issues and London can be found here.