Centre for Alternative Technology

Course Search



The Centre is in a unique position to offer courses. Our staff have many years of 'hands-on' experience, backed up by academic expertise in their subjects. Our renewable energy hardware, organic gardens, ecological buildings and sewage systems are ideal for practical sessions, and the holistic approach of the Centre enables topics to be examined in a broad, sustainable environmental context.

Carwyn Jones

Carwyn Lloyd Jones who has over 20 years experience in the construction industry and is an expert in timber framing, including some of the buildings around the CAT site.


He has constructed two wooden buildings at Grand Designs live. The first was a Compost toilet in 2012. Grand Designs were so impressed they invited him back in 2013 where he built a replica of Kevin McCloud's shed. 


Recently Carwyn has been busy building a new Insulation display on our visitor circuit and building an extension to house our new biomass boiler here at CAT.

Pat Borer


 Pat Borer

Pat Borer is an architect with over 35 years experience in designing and constructing 'green' buildings. He has been closely involved with the Centre for Alternative Technology in the design and development of ultra-low energy buildings, passive and active solar heating systems, photovoltaic roofs, benign building materials and technologies, co-operative ways of building and healthy internal environments.


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Geoff Stow

Geoff Stow has worked in the community development field for most of his working life Recently he has been involved in self build housing and environmental building issues.


He runs courses for Centre for Alternative Technology, Tenants resource Centre in Chester, Walter Segal Self Build Trust as well as under his own company BIY.


He is on the management Committee of the AECB (Association for Environmental Consious Building)

Rob Goodsell


Rob Goodsell has been working for CAT for eleven years.


His love of and connection to nature in part comes from living in Canada’s wilds as a child.


Rob has been teaching for seventeen years both in classrooms and the outdoors.  He is currently working four woodlands of differing natures but to sustainable management principles focusing on the relationship between conservation, resilience, human interaction and economic realities.

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Dr Arthur Butler



Arthur holds a DPhil in Laser Physics and a Masters degree in Physics, both from Oxford University. He published several research papers in the fields of guiding high-intensity laser pulses, and of short-wavelength lasers.


He is a tutor and lecturer on the REBE MSc course, and lectures and runs practical sessions on wind power on the SABE MSc.


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John Mason

John Mason graduated in geology from Aberystwyth University in 1985.


He went on to undertake research, often in conjunction with the National Museum of Wales, on the ore deposits in the metalliferous mining districts of North and Central Wales.


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Julia Walling



Julia Walling is the creator of Woods for Wellbeing, a social enterprise that connects people with woods.


She designs and runs a wide variety of social forestry projects for partners such as AONBs, Butterfly Conservation and the Forestry Commission.


She has been a teacher, counsellor and meditation tutor for over 25 years and is involved in curriculum and course design for social forestry.

As lead tutor, she delivers the Social Forestry OCN training course for The Small Woods Association

Shereen Soliman

Shereen Soliman is tutor on our Natural Beauty Workshop.

She is a qualified beauty therapist with 16 years experience who has travelled the world running natural beauty workshops and conducting skin care consultations.

She studied the MSc in Environment and Energy Studies at CAT and is passionate about nature, the environment, wellness, and personal development.

Her first book ‘The Backpackers Natural Beauty Book’ is available on Amazon and she aims to publish more books soon.

Glenn Morris

Glenn Morris is our tutor for our "Seeing the unseen" - Sculpture course here at CAT.


"I aim, through my work, and by using a variety of media, to explore the tenuous and ephemeral nature of beauty and our human response to this. I find myself drawn to forms that, perhaps, contain visual suggestions of sensuality and frailty whilst, at the same time transmit an underlying message of a darker, troubled quality."

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Anne Thomas

Anne is a freelance artist and complementary therapist based in Mid Wales.


She has quietly painted mandalas for most of her adult life, embarking on exhibiting, publishing and teaching her work in recent years. 

Visit Anne’s website at here 

Angie Polkey

Angie moved to Wales in 1997 to practise and teach permaculture design and nature conservation. Her qualifications include a PhD in Ecology and an Advanced Certificate of Education.


She has worked for various NGOs, including a Wildlife Trust, RSPB, Learning through Landscapes and, for almost 15 years, Denmark Farm Conservation Centre near Lampeter, where she was the Project Coordinator. She now works part-time for the Wales conservation grazing organisation, PONT, and continues her permaculture & conservation teaching & advisory work.


Angie lives on a small holding near Tregaron where she and her husband have created an abundant food forest, veggie garden and permaculture paradise!

Anja Lyngbaek

Anja Lyngbaek (Denmark), is the Associate Director of Local Futures/International Society for Ecology and Culture (ISEC) – an international NGO focused on promoting localization globally, as a systemic alternative to the global corporate economy.


Anja holds a BSc in Rural Resource Management and an M.Phil. in Agroforestry from the University of Wales, Bangor. Anja has a special interest in organic food and farming and has worked on these issues for over 30 years in different parts of the world. In 2000, she helped start Local Futures’ (then ISEC) Local Food Program – the first of its kind in the UK. 

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Tim Coleridge


Tim Coleridge


Tim is an Architect and Programme Leader of the Msc:SABE ( Sustainability and Adaptation in the Built Environment ) by attendance and distance learning, and a BREEAM Offices Assessor.  


Prior to joining CAT, Tim spent eight years in practice at Hopkins Architects in London where he led design teams working on projects ranging widely in programme and scale. Each of these projects tackled head-on in different, but equally ambitious ways, the real world challenges of sustainable and low energy design.


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Frances Hill



Frances Hill is a Senior Lecturer on the MSc SA, and Subject Leader on MSc SEPDM.


With a background in physics, and a PhD in Environmental Engineering, Frances lectures on heat transfers in buildings, and on renewable energy provision. She also teaches study skills including in data analysis.

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Louise Halestrap



MSc Architecture: Advanced Environmental and Energy studies

Senior Lecturer

Thesis Supervisor

Additional Needs Coordinator


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Dr Tom Barker


MSc Architecture: Advanced Environmental and Energy studies.

 Senior Lecturer





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Dr. John Kearney

 Teaching Activities: Tutor, Thesis supervisor


Research Interests: Ecology, Biodiversity, Land Use, Bio-reactors, Fuel Cells, Silviculture



Ph.D Plant Bioinformatics and Cladistics, University of Southampton.

 BSc. Applied Biology 2.1, University of Coventry.

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Rob Gwillim



Rob is a renewable energy consultant  where he advises clients on energy strategies and renewable energy systems. He is also a Carbon Trust registered consultant accredited by the Energy Institute.


 Teaching Activities:-


Lecturer on Renewable Energy, PV, Wind, and Solar thermal biomass

Practical sessions on PV, Wind and Solar thermal heating 

Maurice Mitchell


Maurice MitchellMaurice Mitchell AA Dipl. RIBA Professor Architecture of Rapid Change and Scarce Resources (ARCSR) London Metropolitan University.


Maurice Mitchell teaches, researches and directs live projects in the Faculty of Architecture and Spatial Design (FASD) at London Metropolitan University where he runs a Diploma Studio. He has also taught at the Architectural Association, Oxford Brookes University and the Development Planning Unit, University College London.



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Daniël Postma



Daniël Postma (Aberdeen, Scotland, 1983) grew up in the heart of the Netherlands and trained as an archaeologist at the Groningen Institute of Archaeology (University of Groningen).


Excavating settlements in the former Frisian littoral and the Shetland Isles and training in turf construction in Iceland, he soon developed an interest in ancient rural buildings in the North Sea and North Atlantic area.

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Andrea Smith

Andrea Smith is our tutor for our Felting course here at CAT.


Andrea first encountered  felting around 2002 whilst on an Art and Design Diploma course. The whole experience was delightful, the fact that it was such an ancient craft, the varieties of wool; the finest cashmere to the coarsest camel, which can be spun, felted, woven and even sculpted.  

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Rowland Keable


Rowland Keable began building earth structures in Sierra Leone in 1985 and has extensive experience of working across Africa and the UK.
After publishing Rammed Earth Structures: A Code of Practice, Rowland worked towards its adoption as a Standard, first in Zimbabwe between 1995-98, and then across the SADC region where rammed earth now has a national standard in 15 countries. 

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