Closely linked to the effective use of lighting is the need for overall energy conservation. Though science buildings tend to be high users of energy, capital budgets often do not allow for the purchase of appropriate and necessary energy saving devices. Planners should develop a budget for energy use that takes into account building design, equipment cost, and energy use over the life of the building. The local climate must be considered in order to select the design that utilizes energy most effectively. Use of energy-efficient equipment and a digital control system may also pay dividends in the long run. The users of the building should be brought into all conservation decisions early, as they will often be the ones responsible for certain conservation measures.