Department of Energy and Climate Change
![](/images/news/s300_Amber_Rudd960.jpg?w=700&h=450&mode=crop&scale=both)
April 15
11:22
2016
David was the model of a scientist in government; challenging, insightful and with the ability to explain the most complex subjects in a clear way.
His legacy, including the 2050 calculator now emulated across the world and his brilliant book on sustainable energy, was deservedly recognised by a knighthood earlier this year. His ideas and arguments will continue to influence how we deal with climate change.
![Sir David MacKay](https://assets.digital.cabinet-office.gov.ukhttps://www.gov.uk/government/uploads/system/uploads/image_data/file/51591/David_Mackay.jpg)