Which one of the following is an example of a controllable DSM program?

A time of use rate program is an example of a controllable demand-side management (DSM) program because it incentivizes consumers to adjust their energy consumption based on the price of electricity during different times of the day. By offering lower rates during off-peak hours and higher rates during peak hours, utility companies can effectively manage and reduce the overall demand for electricity during peak times. This program allows utilities to control load more effectively while also promoting energy efficiency and encouraging consumers to shift their usage patterns in a manner that helps balance supply and demand.

The other choices do not serve the same purpose as controllable DSM programs. Fast start gas turbines and uncontrolled load shedding are more related to supply-side management and emergency situations rather than proactive load management strategies. Lastly, integrating only solar energy, while beneficial for renewable generation, does not constitute a controllable DSM program on its own, as it does not encourage or manage load directly through customer engagement or behavior adjustments.