brownout and kwh comsumption.

[mahendra]

hi i don't know if anyone can answer my question or if i am in the right forum for this question,but i noticed that my consumption for my daily usage is somewhat higher always on grid than off grid.can anyone verify what can be the cause .i was told it is because grid voltages are lower than off grid voltages.grid voltages are usually 85- 100v  versus 114 -118  off grid. while consumption difference isn't much it is noticeable.