Ahead of the next 2degrees Live event in January, we will be posting some of the key challenges that attendees will be bringing along to the event. Here Keith Beattie, energy and environmental sustainability leader at Eli Lilly, outlines his main challenge.

Once an improvement has been made to a building, whether it is technological or operational, sustaining that improvement over time becomes vital to deliver on the business case promise. Buildings today are very complex systems, when you make an improvement in one system, there can sometimes be unintended consequences in other systems. Over time, with a number of changes made, the whole building system may become sub-optimal. At what point would it be beneficial for the building systems to be re-commissioned to return it to optimal conditions? How often in its life cycle would you need to plan to do this? We have experienced this is several of our buildings and I'd be interested in hearing the experiences of others who have come across similar situations.

Do you have a similar challenge? Do you feel you’re making progress on this? Have you got some ideas and suggestions for Keith? Please join in and add your thoughts.

If you are interested in attending January's 2degrees Live event, 'Raising The Energy Performance of Your Properties', which will take place on 25th January 2013, please contact Matthew Eastick on +44 (0) 1865 597 640 or matthew.eastick@2degreesnetwork.com