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James Tyas
James Tyas
10.06.21 12:33 PM GMT
Domestic EPC is poor tool for measuring progress

As an energy assessor for over ten years I feel entitled to comment:

The domestic EPC is created using RdSAP. This results in an output measuring costs.

The non-domestic EPC is created using SBEM. This results in an output measuging atmospheric pollution - CO2 output.

To save the planet we need to measure the latter - atmospheric pollution.

The domestic EPC (RdSAP) should be subsumed into the non-domestic EPC (SBEM), taking the best parts of each together.

The SBEM system is the best place to start; enhance that and ditch the RdSAP system.

BRE will not like it, but tough; when the boat is sinking we all need to man the pumps. Let the strongest people pull the levers.

James Tyas,, 07748 848 228

0 responses 2 Collaborators 5 Views

Unlock net zero Team
Unlock net zero Team
13.05.21 9:57 AM GMT
Webinar series today "How funding is driving net zero decision making"

How from a financial perspective can we ensure that funding is available to support a just transition, and we do not stumble into a two-tier market?

Is a lack of finance availability a current problem, or is innovation needed in finance products to deliver on the change we all need to go through?

Sarah Payling Sarah Payling 13.05.21 10:50 AM GMT
And on the cost of retrofit!   Green mortgages are aimed at the buyers. What about incentivis... Read more
2 responses 2 Collaborators 35 Views

06.05.21 3:51 PM GMT
Balancing greenhouse gas emissions with the rate of their removal from the atmosphere.

As a newcomer to this forum I was firstly interested in your interpretation of what net zero carbon might mean and I thought that I would attach something that I put together a couple of months ago. I was a little surprised at the results personally but thought it might be worth a bit of debate within the forum. The experts on the editorial panel may well be able to tell me that my sources and/or arithmetic are wrong and that will be fine too.


0 responses 1 Collaborators 16 Views

Sarah Daly
Sarah Daly
06.05.21 2:40 PM GMT
Quantifying the paybacks of better buildings

Hi to everyone who attended this morning's excellent seminar on the theme of collaboration and thank you for all the lovely emails and LinkedIn messages. I am so pleased it has resonated!

I mentioned the calculator I developed and the thinking around expressing ROI tailored to the different stakeholders: investor, owner-occupier, landlord, tenant etc in order to push through the often incorrect cost assumptions.

Here's the chapter I wrote for 'Creating the Productive Workplace' (Routledge, 2017) edited by Professor Derek Clements Croome. This version is about workplaces but the theory, which I started to develop in 2008, translates to housing, education and healthcare buildings with adjustment of the headings in the metrics. I have used it with the NHS and with a major insurance company and in both instances it created the unequivocal financial case to retrofit or replace buildings because decision makers could look beyond capex and opex into quantifying a whole range of major criteria that are rarely considered. This isn't just about traditional whole life costing and embodied carbon etc, it's about human and societal impacts. This can be overlaid with WLC data for a complete picture ... but this element is rarely incorporated and hence results in very poor or short-term decision-making.

With housing the model can look at the cost to the NHS of poor physical and mental health caused by bad housing; social costs with consequential impacts of unemployment or low employment (causal and resultant links with housing) plus poorer educational outcomes for children in sub-standard housing; crime ... the list goes on but there are many sources of evidence that housing has a direct link with good society.

I would be pleased to extend the theory into housing to create a white paper to drive the need to change government policy around affordable/social housing and the case for scaled-up retrofit for net gains across the board, if we were to get the holistic, collaborative approach that everyone in the sector knows we need!

Sarah Daly

0 responses 1 Collaborators 11 Views

Unlock net zero Team
Unlock net zero Team
06.05.21 9:44 AM GMT
Collaborating to deliver net zero - Webinar series

The second webinar of the series taking place today will discuss collaboration.

Our poll this morning for the attendees is: do you believe net zero is achievable by 2050, and why?

Share your thoughts with us today on the net zero forum and join the debate!


Sarah Payling Sarah Payling 06.05.21 11:03 AM GMT
A new question from the audience, "Is there a role for all housing providers to collaborate on &ldqu... Read more
3 responses 2 Collaborators 62 Views