Eight of the UK's most energy efficient workplaces – in pictures

Hamlyns of Scotland’s mill at Boyndie in Banffshire, northeast Scotland, is the ideal spot for growing oats and driving wind turbines. In January 2012, Hamlyns became Britain’s first modern day windmill, installing a wind turbine alongside its oat mill in Banffshire. The 2.3-megawatt wind turbine provides the electricity required to operate the mill, with any surplus fed into the national grid. Photograph: PR

The Wales Millennium Centre was the first independent arts centre in the UK to achieve international environmental management standard ISO 14001, and was a founding signatory of the Welsh Government’s Sustainable Development Charter. Between 2007 and 2013, the centre reduced energy usage by 40%. Photograph: PR

Gwynt y Môr wind farm is a 576-megawatt offshore wind farm located off the coast of North Wales, and the second largest operating offshore wind farm in the world. Photograph: PR

Leading vegetable producer and supplier Barfoots was one of the first UK farm operations to construct a bio-digester plant. This produces biogas, which is then used to help run the business. Barfoots recently won the 2 Degrees Energy Sustainability Award 2015 for being 100% self-sufficient in energy generated by waste. Photograph: PR

More than 20,000 solar panels with a capacity of over 5MW were fixed to the roof of the Bentley Motors factory in Crewe, by solar energy firm Lightsource, making use of 3.45 hectares of roof space that would otherwise be unused. During peak generation times, the system can produce up to 40% of Bentley’s energy requirements and reduce CO2 usage by over 2,500 tonnes per year. Photograph: Lightsource

At the end of 2014, London’s famous Walkie Talkie building had 250 solar panels installed 38 floors up by solar energy firm EvoEnergy, making it one of the City’s most sustainable buildings. Photograph: EvoEnergy

The Museum of Liverpool is powered, cooled and heated by combined heat and power technology from ENER-G. The museum’s energy centre was built within the historic Great Western Railway Goods Shed on Liverpool’s famous waterfront. Photograph: PR

Solar Cloth Company and EvoEnergy partnered to carry out the UK’s first commercial local authority installation of a solar panel carport solution to Nottingham City Council. The 448 solar panels cover 40 parking bays, generating enough energy to power the city’s Harvey Hadden Sports Villages, reducing its energy requirements from the grid and freeing up funds for further investment in sports and leisure. Photograph: PR

Content on this page is produced to a brief agreed with E.ON, sponsor of the Efficiency hub.