Centre for Alternative Technology

Radical action is needed if we are to avoid dangerous climate breakdown. CAT offers practical solutions and hands-on learning to help create a zero carbon world.

We need a UK-wide Climate Emergency Action Plan!

Paul Allen has called for a UK-wide Climate Emergency Action Plan! Please sign his petition and share widely.

New courses at CAT Graduate School for 2019

MSc Green Building*, MSc Sustainable Ecology* & MSc Sustainability and Behaviour Change*

Inspiring Action

Inspire action on climate change by donating to CAT today

Visit CAT

There’s so much to see and do at CAT, with hands-on learning for all ages. Visit us to explore all aspects of green living.

What's on

Pond and Stream Invertebrate Life

Discover an amazing underwater world. Pond-dipping for grown-ups! Learn how to find and identify freshwater creatures, exploring their habitats and finding out about their often bizarre life cycles. Use microscopes,…

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The Science Behind Gardening

Get to grips with the fundamentals of plant biology. Learn the principles of botany and the implications for how plants grow, exploring how this knowledge can help you improve your…

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building a lapsteel guitar

Build a Lapsteel Guitar

Build a working instrument using reclaimed and upcycled materials. If you’ve ever dreamed of making your own musical instrument, lapsteel guitars are a great place to start. During this one-day…

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Graduate School of the Environment

Gain the knowledge and skills to help address environmental change. CAT’s postgraduate courses are respected across the world, providing a big-picture, integrated approach to sustainability.

Zero Carbon Britain

To tackle climate change, all emissions that can go to zero must go to zero – as rapidly as possible. CAT’s Zero Carbon Britain research shows how this can be done using technology available today.

Educational Trips

Bring your school, college or educational group to CAT and start exploring positive solutions to environmental challenges.
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Short Courses

Gain practical skills and hands-on experience with one of our day, weekend or week-long sustainability courses.
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Latest from the CAT Blog

paul allen lecture

This is an emergency — let’s act like it.  

Public awareness and the desire to create change is building. Later this week people from across the world will join a global week of climate action in support of the…

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A Green New Deal for Homes

As the campaign for a Green New Deal gathers pace in both Britain and the US, Jonathan Atkinson looks at how it could help transform UK housing.

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Time for a fossil fuel non-proliferation treaty

Half a century ago, faced with the threat of nuclear catastrophe, the world came together and agreed the nonproliferation treaty. Andrew Simms and Peter Newell argue that we now need…

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Free Information Service

Wondering what you can do in your own home to help combat climate change? CAT’s free information service offers independent and impartial advice on a wide range of areas to help you live more sustainably.

Solar Photovoltaic (PV)

Solar Photovoltaic (PV)

Generate electricity from the sun. Photovoltaic (PV) solar panels convert sunlight into electricity. You can use the electricity to power domestic appliances, and export excess energy to the grid. This…

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Natural and low impact building materials

Natural and low impact building materials

Our page on low energy buildings talks about the ’embodied energy’ of building materials. This is the energy that was used in extraction, manufacture, and transportation. Another way of assessing…

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Energy saving at home

Energy saving at home

From the very earliest days of CAT we have focused on building and renovating to high levels of insulation, so that we consume less energy. Reducing our energy demand makes…

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CAT skyline


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