A big trend is right now is metering. In a commercial building, the trend is to try to get as many suites, as many spaces, as possible within a building metered so that the occupants can see for themselves what their energy costs are. That's the easiest way to start getting your energy costs under control without changing to LED lights or upgrading your HVAC systems or anything.
On February 8th, 2018. See this statement in context.