Optimal battery energy storage system (BESS) scheduling in regions withunreliable electricity infrastructure remains critically underexplored despiteaffecting approximately 1.2 billion people globally. This study developsa novel hybrid forecasting framework and evaluates three scheduling algo-rithms for residential BESS operation in Iraq, characterized by severe gridinstability (4-10 hour daily outages), extreme seasonal load variations (400%summer-to-winter differential), and reliance on diesel backup generation. Theforecasting methodology integrates artificial neural network prediction withhigh-frequency data mining (1 kHz sampling) for device-level signature recog-nition, achieving coefficient of determination (R²) improvement from 0.84to 0.94-0.95 and reducing peak load prediction error from 12.7% to 5.2%.Three paradigms were systematically evaluated: Adaptive Threshold-BasedScheduling (ATBS), Mixed Integer Linear Programming (MILP), and ModelPredictive Scheduling (MPS). Multi-site validation across six residences innorthern, central, and southern Iraq over a complete annual cycle revealsalgorithm-specific trade-offs. MILP achieves maximum peak demand reduc-tion (46.0%) with 93.5% renewable self-consumption but requires 8.4 sec-onds computation time and exhibits sensitivity to forecast accuracy. MPSdemonstrates robust performance with 31.2% peak reduction and 96.8% self-consumption through real-time adaptability (0.3 seconds execution). ATBSprovides forecast-independent operation with 8.9% peak reduction and 95.7%self-consumption at negligible computational cost. Full-year techno-economicevaluation across 365 days reveals that MILP achieves 32.9% household gen-erator energy reduction and 1.38 tonnes/year CO2 avoidance, while ATBSprovides 23.5% reduction at lowest computational cost. Under the veri-fied Iraqi generator retail rate of $0.29/kWh (52.2 USD/180 kWh), batterydegradation costs marginally exceed generator fuel savings for all algorithms,yielding negative net present value under current tariff structures. However,CO2 abatement costs of $35-44/tonne fall below social cost of carbon esti-mates, providing environmental justification for deployment. Community-scale analysis (1,000 homes) demonstrates MILP deployment would avoid1,380 tonnes CO2 annually, equivalent to removing 300 passenger vehicles.Full-year techno-economic evaluation reveals that battery degradation costsmarginally exceed generator fuel savings under current Iraqi tariff structures($0.29/kWh), yielding negative net present value for all algorithms under a$7,000 battery system cost; however, CO2 abatement costs of $35-44/tonnefall below social cost of carbon estimates, providing environmental justifi-cation for deployment. Breakeven analysis projects economic viability atbattery costs below $3,500-4,000-approaching feasibility given ongoing bat-tery price declines. Findings establish quantitative frameworks for algorithmselection based on operational priorities, demonstrating a viable near-termpathway for residential energy management in grid-constrained developingregions serving 1.5 billion people globally.