The Onyx-operated South East London Combined Heat and Power (SELCHP) facility in Lewisham has been praised after opening its doors to visitors as part of the Open House London Weekend.
Deputy mayor of Greenwich Councillor H Singh said: "I was really impressed at the way SELCHP converts waste into energy. Given the focus on the environment and the need to be mindful of our limited resources, this centre is a really valuable asset in the area."
Nearly 600 people, including councillors, teachers, students and families browsed facilities, spoke to staff and viewed a range of exhibits from partner organisations on show.
The day was commended for helping to raise awareness of the environment and the environmental challenges facing the world today.
Mayor of Bromley Councillor Joan Wykes OBE said: "This is my second visit to SELCHP and proved to be both interesting and instructive. The handling of waste at SELCHP is clean, efficient and a great contributor to a better and cleaner environment."