CAT Centre For Alternative Technology The Centre For Alternative Technology (CAT) is an education and visitor centre demonstrating practical solutions for sustainability. CAT covers all aspects of green living: environmental building, eco-sanitation, woodland management, renewable energy, energy efficiency and organic growing. The CAT site is a unique and valuable practical demonstration centre, a living laboratory with an enormous range of live examples of sustainable solutions. CAT has the largest range of installed renewable systems anywhere. These include: Photovoltaics Solar thermal A micro-grid Off-grid and grid-connected systems Biomass combined heat and power (CHP) Hydro Air source heat pumps A community heat main A range of small to medium wind turbines The CAT site also has two reed bed systems, its own off-mains water supply, and extensive organic gardens. CAT Centre for Alternative Technology Practical Solutions Categories Retrofitting Built environment Energy technologies