Challenge in a rural microgrid on a remote power system, specifically on how to define a real-time operation scheduling "cost-function" in an isolated microgrid using an off-grid remote power system with microgrid distribution (applications in rural Africa, China, India, Brazil, etc.).

Question: In most microgrids, the scheduling optimization centers around optimization using the monetary $ cost of energy function with CO2 emission minimization (using Multi Objective Optimization or Mixed Integer Linear Programming MILP functions).

In off-grid applications (grid-independent systems), there is no $ cost of electricity, meaning the focus of daily scheduling optimization should be more on "preservation of energy" in order to minimize user discomfort or minimize load shedding (maximize user energy security). Any advice on defining a daily scheduling optimization cost function in isolated/remote/autonomous off-grid power applications (where $cost may not be available or not the prime focus).

Application - solar thermodynamic micro combined cooling heating and power m-CCHP CHP dish Stirling CSP system in a trigeneration (or triple or polygeneration) configuration to supply three streams of microgrid energy (electricity, heat, cooling) to a remote rural off-grid village. In hybrid mode, biofuel or kerosene may be used as supplementary heat source.