Activation of emergency demand response. What Probabilistic Planning Actually Means in PracticeProbabilistic, systems-based planning is built for volatility, but the phrase gets used loosely, so it is worth being concrete. Boiling the ocean: Teams wait for a perfect, all-encompassing system model before producing anything. Models that do not govern: A sophisticated probabilistic model gets built, and capital decisions continue to be made the old way. The industry’s job now is to be equally honest about the other side of the equation: the ceiling of the current operating system.