Hourly utility demand, mid western USA from 1 Jan 2003
Source
Hyndman, R.J., Koehler, A.B., Ord, J.K., and Snyder, R.D., (2008) Forecasting with exponential smoothing: the state space approach, Springer.
Examples
plot(utility,main="Hourly utility demand",ylab="MW",xlab="Day")