Included are embodiments for demand control. At least one embodiment of a method includes sending a first control signal, the first control signal configured to indicate a first supply for an environment, the first supply based on a first environmental factor and a control setting and determining a change in a second environmental factor. Some embodiments include calculating a second supply for the environment, based on the determined change and sending a second control signal, the second control signal configured to indicate the second supply for the environment.