A system for managing power in a facility includes a hardware interface with a plurality of access ports for connecting with a utility power grid, at least one renewable power source, and at least one electrical load. For example, projection device may include several sets of VCSELs, each associated with a set of MEMs mirrors and coupled to a control circuitry. Compensation means are provided to correct for the phase difference caused by the different lengths. The substrate can have a coefficient of thermal expansion at least approximately equal to the coefficient of thermal expansion of the microelectronic die or a printed circuit board. Because thermosensitive compositions do not obey the law of linear superposition, the problem of stray exposure is eliminated allowing the thermal polymerization of any point within the volume of the liquid without affecting adjacent points.