The peak demand in the graph you show above is peak facility demand, and the values are the component contributions to peak demand. If you add up each end use, you will see it equals that total end uses peak. This demand is occurring in January at a time when there is no cooling demand.

This is still an odd result though. Lighting and equipment are on regular schedules, so we would expect the added cooling in summer to cause the peak electrical demand to occur then. What may be happening is that your fan and pump energy is peaking at this time in a heating condition, so perhaps there is some issue with how you have your plant/air loop sizing set up for heating design conditions.