We mentioned the government’s long-awaited Heat and buildings strategy in the article about zero carbon homes a couple of months ago. Now published ahead of COP26, the direction of travel is a little clearer. Here we summarise what it says, looking at how it will affect you and your decisions as your existing heating system reaches end of life – we’re not looking at standards for newbuilds here – they have their own paths.  A third-party summary written by Building Design is a useful primer along with a cautionary reader comment from Finland highlighting the intricacies of vapour barriers when adding new insulation inside or out.  A recent Guardian article usefully lays out the “hydrogen landscape” and the ongoing tests.

Key points

The strategy says many good things, with good aspirations, but the thing that really stands out for existing homeowners is that a hydrogen infrastructure remains a work-in-progress. The issue is still: Can it be made economically and ecologically “at scale”, and deployed using existing gas mains? The government has said it needs more time to run research projects and decide – another 5 years. Can the climate wait ?

As we said previously, the heat-pump route is more involved, and has more finely tuned parameters for success.  You might therefore want to nurse that old boiler gently into its dotage until the infrastructure research is done, because a replacement hydrogen boiler (already designed with prototypes available from, for example, Worcester-Bosch, with a negligible cost premium) would be a trivial replacement by comparison, especially in a typical Hammersmith period home.  Installation of so-called hydrogen-ready boilers could be a way to prime the pump for a national switchover, like the switch from town gas from 1967 – 77.

If you’re interested in a no-nonsense discussion between a boiler manufacturer involved in government-sponsored hydrogen trials, their ins and outs, plus heat pumps, and someone who’s actually installed both in the real world, then the video adjacent is for you. It should open your eyes to most issues homeowners are about to grapple with, and discusses many of the points here in more detail.

Zero carbon homes are very much on-topic with the COP26 summit approaching in November, but to date rather more discussion has been around standards for newbuilds, downplaying the fact that by most measures 70-80% of the planned “net zero homes of 2050” are already built, 9-inch solid walls, warts and all.  “Decarbonising” them is now exercising government, councils, the RIBA and industry at many levels.

UK Domestic energy

You’ll probably have heard of plans to eliminate natural gas boilers by 2025 – certainly in newbuilds – but my house and yours won’t be so far behind.  Domestic energy use represents about 27% of UK energy consumption, with 85% of that apparently used for heating & hot water – as significant in climate effect as the usual suspects – cars and planes.

Brian’s home in Hammersmith

You may also be familiar with Tom Pakenham’s Passivhaus in Lena Gardens W6 from a few years ago, which sets a formidable standard for whole-house renovation with huge attention to detail to achieve the required standard.

But what if you took an existing Edwardian terraced family home in 2021, and made it zero carbon while living in it, but without gutting the interior, or adding 100+mm of hard insulation to the inside of all the external walls, ripping up the floors to insulate them, and possibly compromising or losing some of the period features we appreciate?  This is what our member Brian Thresh is doing – you may have seen him present the project at London Climate Action week in June.  He shows that it can be less intrusive than we might fear.

Let’s be honest for a moment, there are only so many builders in the world, and so many hours in the day, there is little practical chance of all the country’s millions of homes being laboriously superinsulated in the next few years – after all we’ve been talking about insulation for 40+ years already.  Brian expects to be able to demonstrate that his home is zero carbon, once the annual numbers roll in, through the combination of:

• Replacement of a gas boiler with a substantial 12kW air-source heat-pump
• 6.6kW of solar cells
• Battery storage
• A green & flexible electricity tariff, using a smartmeter

There’s an interesting tension here between expenditure on craftsmanship – a well designed and precisely executed complete refurbishment often with specialist materials – the Passivhaus – and the retrofit of a period home using modern mass-produced technology to achieve a similar net result, but with significantly less upheaval. 

It seems likely that the latter will prevail for the majority because of the numbers described above, with as much of the former as is practicable on the existing housing stock, but how do the finances and carbon footprint compare: Conversion / Running / Whole life?  Much of the public discussion is around carbon, and saving on everyday bills; rather less – a lot less – on Total Cost of Ownership, or Net Present Cost, important for those with shallower pockets. As Brian says, this stuff doesn’t come cheap at the moment.  It will be instructive to assess and compare over the years to come, particularly as technology improves, such that an optimised mix of solutions can be provided for each domestic setting.  Solar cells have already improved significantly, but you may not have owned any yet !

Quaker meeting entrance

Quaker meeting house frontage

Quaker meeting house brickwork

Quaker meeting plaque

Quaker meeting room 1

Quaker meeting room 2

Quaker meeting wooden ceiling

Quaker meeting outside and garden

(Click on images for full-sized versions, then scroll through the set)

Our member Victoria Timberlake has been instrumental on the New Meeting House Committee to get this project from inception to completion through many hurdles over a period of 17 years. We first reported on plans for the proposed development in our October Newsletter of 2014.

The previous post-war meeting house stood in a rather noisy location adjacent to the A4 and in the way of the new Town Hall development for which its site was required. The Council offered the new site as a swap, and we think this new use is an excellent fit for the area.

The new building brings a welcome break in the line of terrace houses on Bradmore Park Road, reminiscent of the open playground space that went before. Brackenbury is lucky to have this new neighbour, with its refreshing display of design enthusiasm enriching surface and form: the intriguing circular shape of the building, the gates, screens and brickwork on the street boundary. Careful design and quality of construction dress the functional needs of the interiors, and bring a quiet and serene air to the circular Meeting Room, full of light from the high clerestory windows and the views to the meadow garden behind, while maintaining privacy for the neighbours.

The space to the side and rear of the meeting house has been sown as a wild flower meadow, and will be spectacular next summer.  Alongside this greening, the building uses FSC (Forest Stewardship Council) sourced materials, and is designed to be environmentally efficient, with solar panels and CO₂ sensors for occupancy detection, adjusting air circulation in each space accordingly.  The low energy building database records it as AECB (Association for Environment Conscious Building) standard certified.

Heathrow Expansion was temporarily derailed by the Judicial Review (JR) in February, ruling the Airports National Policy (ANPS) illegal through its non-compliance with the existing UK Climate Change Act, and by extension, the Heathrow expansion plans that relied on it. By law, the Climate Change Act commits the UK government to reducing greenhouse gas emissions by at least 100% of 1990 levels (net zero) by 2050.

Heathrow expansion 2019

There have been many setbacks to the Airport’s expansion plans over the years from Terminal 5 onwards: claims that several top politicians would stop expansion, elongated planning enquiries, and many anti-expansion campaigns, but like the addict it appears to be, suffering Compulsive Shopping Disorder, Heathrow Airport Limited (HAL) keeps coming back for just one more hit, claiming that it will then be satisfied.  Like it’s maniacal namesake in the epic film 2001 – a Space Odyssey, to accept this would be to seriously misjudge the machine.

HAL’s public response to the JR is “10,000 quality apprenticeships by 2030, New Routes and 180,000 new Jobs”, plus the inevitable appeal against the judgement.  While new routes could be created easily with a new runway, they could also be created by displacing cargo and short-haul flights onto greener options, such as rail or electric vehicles (remembering that Heathrow is actually the UK’s largest cargo destination, with 1.8 million tons in 2018: up 20%, matching passenger volume increases since T5 opened).  The other two claims stretch credibility beyond reason, given that Heathrow currently employs 76,000, the expansion would represent a more than doubling in size.  Or perhaps that gives a clue as to the full plan ? 

Heathrow doesn’t appear to be addressing the issues that most of us care about – the effect on the environment, surface transport, and the lives of residents in large parts of the South-East – all the more so having recently become used to not being woken at or before 6AM with fewer flights during the Coronavirus pandemic; Heathrow has temporarily reduced to single runway operation.   In the new Greta-inspired world, HAL makes additional claims regarding sustainability, but it again stretches reason that the discredited greenwash baked into last year’s consultation could have been warmed over sufficiently to pass muster this time round.

Committee and several members attended the recent Climate Change event at the Lyric to hear what the recently formed commission has been discussing, and to provide input.  Sian Alexander, the Director of the Lyric, opened the meeting making the following points:

• The H&F commission is a residents’ working group engaged in a ‘public facing campaign’.
• The Commission started in 2019 and is one of a number of a H&F Residents’ Commissions.
• The Commission is chaired of local architect Paul Beaty-Pownall, and consists of twelve local members.
• Its purpose is to advise and help H&F Council achieve zero carbon emissions by 2030.
• Its first formal meeting took place in December 2019.
• We all need to be prepared for major changes.

Fehinti Balogun

We were then presented with a personal story of the effects of climate change from actor Fehinti Balogun, making an informative and entertaining presentation. He touched on how climate change affects not only himself but his wider family here and abroad, highlighting that the issue is about eco, not ego. He’s been giving a similar presentation to schools in recent months.

He noted that the Commission is believed to only need 3.5% direct support from the population for success to be guaranteed by influencing all those connected.

Paul Beaty-Pownall

Paul Beaty-Pownall summed up and introduced the workshop sessions that followed. The audience were invited to participate and circulate through four separate discussion groups in order to gain ideas and recommendations from the participants.

We hope to see the report from the commission in the coming months to inform the Council’s progress in accelerating our local responses to Climate Change.

To visualise the extent of the problem, the UK’s current emissions of thousands of tonnes of CO₂ per hour caused by electricity generation can be seen here

Many journals have pronounced that London’s ‘filthy air’ is killing thousands, and we note that all candidates standing for Mayor of London this year quote Air Quality as a pillar of their campaign. Here, taking the long view, we look more closely at the claims and wider issues, and how they apply to Hammersmith, public transport and cycleways. 

According to King’s College, the reference for air quality measurements, London is the 2,516th most polluted city in the world

We think that climate change is the key issue here, and which if properly addressed, would deal with many of today’s air quality issues. The reference work ‘Mortality Effects of Long-Term Exposure to Particulate Air Pollution in the United Kingdom’ (A report by the Committee on the Medical Effects of Air Pollutants [COMEAP], updated 2018), says clearly in its executive summary ‘As everyone dies eventually no lives are ever saved by reducing environmental exposures – deaths are delayed resulting in increased life expectancy.’

Air quality in London started deteriorating about 400 years ago, and for the entire time the Georgians and Victorians were painting the globe pink, sulphur dioxide was around 40 times the current WHO guideline level of 20 µg/m³. It was in fact raining sulphuric acid AKA ‘acid rain’, the effects of which can be seen on the Palace of Westminster or in Turner’s paintings.  The Great Smog of 1952 that killed perhaps 12,000 appears as a peak on the graph, and created a level over 10 times the level it is now, but our nonagenarian, and in one case centenarian parents survived and are still here with us, begging the question what effect it had on long term life expectancy.

The answer from COMEAP is around six months if you could (unrealistically) remove 100% of all air pollution from all sources, or more realistically 20 days per µg/m³ removed, plus you have to live to those grand old ages otherwise healthy.  Not as much as the headlines or Twitterati would have it.

Of course this isn’t a complete list of pollutants, there’s PM2.5, PM10, NO₂, and Ozone which have differing WHO thresholds as shown here, and those with respiratory conditions are much more affected than others, explaining most of the 1952 deaths.

Cycling in Copenhagen, 2015

The CS9 saga has been running for a couple of years now, and we’re finally beginning to achieve some clarity in the plans for Hammersmith.

CS9 has been renamed CW9 “CycleWay 9” to distance it from existing Central London Superhighways, and provide a facility serving a wider demographic than those installed to date.  The image being promoted is shown in TfL’s Walking and Cycling Commissioner’s Tweet, left, although we feel obliged to point out that despite the wording, the photo is not London at all – this was Copenhagen in 2015.  Nevertheless we believe this more inclusive vision is an appropriate aspiration for our borough’s roads.

Together with other members of the community, we have been successful in persuading H&F Council that TfL’s CS9 plans were flawed, now two different cycle routes are planned:  a fast commuter route using the somewhat underused paths alongside the A4, and something closer to a “Quietway“ plus urban realm improvements (greening) in King Street and Hammersmith Road. More on the council website, where an online debate has started.

We expect to be part of the planned residents consultation as we are concerned about potential negative impacts on pedestrians and retailers, significantly slower buses/traffic/increasing pollution, for which there is evidence from schemes such as Winchmore Hill and Waltham Forest.  TfL’s own CS9 Air Quality Report predicts only walking-speed traffic along Hammersmith Road at Olympia, and no overall improvement in air quality.  A council meeting is planned for 9th Sept, which you should attend if you are interested in this scheme (see our diary)…