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Topic: Passivhaus

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[Episode #225] – Demand Side Solutions

May 29 2024

Energy transition is often depicted as a choice between different supply-side technologies such as wind or solar versus oil and coal. However, the demand side of the energy transition — focusing on efficiency improvements to buildings, adopting walking and biking over driving, and electrifying consumer appliances — deserves just as much attention.

Would you believe that widespread adoption of demand-side measures like these could cut the UK’s energy demand in half without sacrificing services or quality of life? That’s one of the key insights our guest in this episode has to share.

Nick Eyre is one of the most well-informed experts on the demand side of the energy transition. He is Professor of Energy and Climate Policy, and Senior Research Fellow in Energy, at the Environmental Change Institute at Oxford University in England. He serves as the Director of the Centre for Research into Energy Demand Solutions, which is UK Research and Innovation’s (UKRI's) primary investment in energy use research. He is also a Co-Director of the Oxford Martin Programme on Integrating Renewable Energy, which is undertaking research on the combined, technical, economic, social and policy issues in moving to electricity systems with very high levels of variable renewables.

For the past five years, Nick has led a comprehensive project involving hundreds of researchers to review nearly 500 publications on the demand side of energy. This project concluded at the end of 2023, and he joins us today to share its key insights. He’ll help us understand the most important demand-side decarbonization strategies in 2024, and what we can do to accelerate their deployment. It’s a really comprehensive, yet very accessible (and not too geeky) discussion that offers at least a few practical insights that all of our listeners could readily consider applying in their own lives.

Guest:

Nick Eyre is Professor of Energy and Climate Policy, and Senior Research Fellow in Energy, at the Environmental Change Institute. He is Director of the Centre for Research into Energy Demand Solutions, which is UKRI’s main investment into research on energy use. He is also a Co-Director of the Oxford Martin Programme on Integrating Renewable Energy, which is undertaking research on the combined, technical, economic, social and policy issues in moving to electricity systems with very high levels of variable renewables.

Professor Eyre acts as scientific advisor on climate change to Oxford City Council. He is interested in the role of public policy in reducing energy demand and carbon emissions, and the transition to zero carbon energy systems. This includes the integration of renewable energy into energy systems, energy market reform, policy instruments for energy efficiency and the role of local government and communities.

Professor Eyre was one of the UK’s first researchers on mitigation of carbon emissions, and was co-author of a presentation to the Cabinet on this issue in 1989. In 1997, he wrote the first published study on how the Government’s 20% carbon emission reduction target might be delivered. He has advised successive governments and a wide range of Parliamentary inquiries. He managed a large European Commission programme on the external costs of energy and was lead author of the report used as the basis for the UK Government’s first estimate of the social cost of carbon. From 1999 to 2007 he was Head of Policy and then Directory of Strategy at the Energy Saving Trust.

On LinkedIn: https://www.linkedin.com/in/nick-eyre-96951a33

On the Web: Nick’s faculty page at Oxford

Geek rating: 3

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[Episode #217] – Passivhaus in Scotland

Feb 7 2024

Mini Episode

Discussions about energy transition often overlook the crucial role of reducing the energy consumed to maintain comfortable temperatures in the spaces where we live and work. Remarkably, generating heat, the largest end-use of energy, accounts for 40% of global fossil CO2 emissions, with the majority of this heat used in buildings. About half of the energy used in buildings is for their heating and cooling, and because fossil fuels still meet the bulk of heating energy demand, this contributes to about one-fourth of global energy-related carbon emissions annually.

Addressing this challenge by improving building efficiency and reducing thermal losses is arguably the most critical step we can take to facilitate the energy transition. However, strong policies or targeted programs to this end are largely absent worldwide.

A transformative solution is the adoption of the Passivhaus standard for new and existing buildings. Retrofits to meet this standard could drastically reduce energy requirements for buildings, accelerating our progress toward the energy transition.

In this episode, we are joined by Es Tresidder, a Passivhaus consultant who works with an architecture firm to advance the use of the Passivhaus standard and techniques. He walks us through the Passivhaus standard and how to meet it. He also shares the story of the ‘deep retrofit’ performed on his own house in the rainiest and coldest part of Scotland, transforming it into a home that is far healthier and more comfortable, all while significantly reducing its energy consumption.

Guest:

Dr. Es Tresidder is a Passivhaus designer based in Fort William. He works as a Passivhaus and energy specialist for John Gilbert Architects, one of the leading environmental architecture practices in the UK. His work at John Gilbert Architects currently focusses on their larger and more complex projects – Passivhaus schools, leisure centres and retrofits. Es has a PhD in low energy building design optimization, using genetic algorithms to optimize building designs for efficiency and cost. In 2023 he finished a retrofit, to Passivhaus EnerPHit standard, of his own home in Fort William, Scotland. Once certified he believes this will be the first EnerPHit of a modern timber-frame house in the UK, and potentially the world.

On Mastodon: @EsTresidder

On Twitter: @EsTresidder

On the Web: Highland Passive

Geek rating: 2

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[Episode #34] – Transition in the North Sea and Netherlands

Jan 11 2017

Mini Episode

The North Seas Countries’ Offshore Grid Initiative would knit together the power grids of the countries adjacent to the North Sea, and enable a far greater share of renewables—especially offshore wind—on the northern European grid than would be possible otherwise. It would also make it possible to use Norway’s substantial hydro capacity as a giant battery to balance out the variability of wind and solar on the grid. And in the longer term, it could be a key part of a European “supergrid” that would connect the transmission grids of all of Europe, and potentially even tap the massive solar capacity of the Middle East and northern Africa. These are big, bold ideas, and implementing them won’t be easy or cheap, but the benefits would be enormous… so much so that building these transmission links might be inevitable. But the planning alone has already gone on for at least seven years, and while some of the countries that would connect to the North Seas Offshore Grid are already building parts of their contribution to it, there is still much work to be done…and building the physical infrastructure might be the easy part! In this episode we talk with a Dutch expert who has been directly involved in evaluating and planning for these supergrids to see where they now stand, what their potential costs and benefits are, and what we might expect in the future.

Geek rating: 4

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