Reducing Energy Consumption at Drinking and Waste Water Sites

How to reduce energy consumption & increase the awareness of unnecessary energy usage across drinking and waste water sites? I work for a high energy user, relying on electricity for most of our processes and treatment activities. Energy is one of our largest operating costs and as a result, we now face a significant energy consumption challenge. Whilst we have already started to make our sites more efficient with the introduction of renewable energy generation, I am seeking ways to further reduce our energy consumption for the future.