Sustainable performance, with the impact on climate change as the most prevalent indicator, is becoming more important to businesses. DSM, as front runner sustainable performance, formulated the objective of carbon neutral production sites. In this thesis, it was researched how the carbon footprint of a production site of DSM can be reduced to zero; reaching a state of carbon neutrality. The carbon footprint concept and how it relates to a production site has been researched. A case study was done at a production site of DSM and emission sources that determine the carbon footprint of that site were identified. From this the focus was narrowed to achieving a carbon neutral energy supply. It was investigated what energy supply technologies could be applied and what steps needs to be taken to achieve this.