Table 1 Comparative analysis of representative approaches.

From: Empowering smart homes by IoT-driven hybrid renewable energy integration for enhanced efficiency

Study (representative)

System type

Method

Evaluation and Metrics

Strengths

Limitations

Contribution

Model Predictive Control -based works50

PV ± storage

Model Predictive Control57

Simulation; metrics: tracking error, constraint satisfaction

Excellent stability and constraint handling34

Requires an accurate model; limited multi-objective optimization32,33

Combine machine learning forecasting with a hybrid optimiser to maintain constraint satisfaction and improve multi-objective trade-offs.

Genetic Algorithm (GA)/PSO/Differential Evolution (DE) optimizers51,52,53

PV + battery/PV + wind

Metaheuristics (Genetic Algorithm, PSO, Differential Evolution)58

Simulation: cost, emissions, efficiency

Good global search, multi-objective optimization35

Premature convergence, parameter sensitivity, and high runtime36,37

Hybrid global + local search, adaptive parameters, and parallelism reduce convergence and runtime issues.

Reinforcement Learning -based energy management system54

PV + battery + demand response

Reinforcement Learning59

Simulation; reward, cost

Learns model-free policies38

High data demand, unstable training, weak guarantees39,40

Use machine learning forecasting and constrained optimisation for safety and deterministic guarantees; Reinforcement Learning is reserved for future extension.

Forecasting + rule-based energy management system55

PV + wind

Statistical forecasting with heuristics58

Simulation/pilot; cost savings

Simple, robust, easy to implement41,42

Suboptimal, inflexible to changes43

Replace heuristics with adaptive optimization informed by IoT real-time data.

Pilot IoT deployment56

PV + storage

Commercial energy management system with vendor rules59

Small-scale pilots; uptime, user acceptance

Real-world proof-of-concept44,45

Proprietary, not generalizable46,47

The proposed framework proposes a scalable, open architecture with security and communication considerations.

Proposed System

PV + wind + battery + demand response (IoT integrated)

Machine learning forecasting + hybrid optimization (global heuristics + local refinement)

Smart-home simulation: system efficiency, energy cost, CO₂ emissions

Holistic IoT integration, multi-objective optimization, real-time adaptability48

Requires pilot validation for scalability49

Explicit IoT-driven framework, adaptive optimizer, quantified economic & environmental benefits.