Energy audits in depots and workshops in Paris (RATP)

Under the ‘Grenelle de l’environnement’, French public policy defining key actions for tackling sustainable development issues, it was decided that most energyconsuming public-owned buildings would be subject to an energy audit by 2010. The aim is to reduce energy consumption by 40% and GHG emissions by 50% by 2020. As a public company, RATP had to meet this new regulation and organised energy audits for all its tertiary and industrial buildings. Thirty-two sites were assessed in 2012 and the remaining 14 are being assessed in 2013 and 20141.

This broad investigation gave RATP a clear view of the energy performance of its sites and enabled useful comparisons between similar sites. The average energy bill for a RATP building amounted to €320,000 per year with an average cost of €150/m2/year. Energy audits are also a great tool for monitoring the achievements made in other buildings. In a previous phase, energy audits focused mostly on expensive actions that were not relevant for the short term, as they would require additional studies and budgets. So a new analysis framework was established to highlight what measures could be taken in a shorter term. This has led to short-term actions for heating, cooling and ventilation systems.

1 The Ticket to Kyoto project allowed RATP to finance the last seven energy audits.

Energy audits in depots and workshops in Paris (RATP) Energy audits in depots and workshops in Paris (RATP) Energy audits in depots and workshops in Paris (RATP)

Investment sheet: RATP energy audit