• Geographic Variability: Peak sun hours vary significantly across the U.S. (e.g., 4 hours in northern states vs. 6 hours in southwestern states).
• Villa-Specific Factors: Larger homes may have higher energy demands due to heating/cooling, appliances, or pool pumps. A detailed energy audit is recommended.
• Storage and Grid Connectivity: For nighttime or cloudy-day usage, battery storage is advised. Grid-tied systems can leverage net metering.
• Regulations and Incentives: Many states (e.g., California) mandate solar installations for new homes. Federal tax credits (30% of system cost) and local incentives can reduce upfront costs.
• System Size: 3.5 kW (with scalability for future expansion).
• Additional Components: Grid-tied inverter (e.g., string or microinverter), optional battery storage, and monitoring system.
• Next Steps: Consult a local solar provider for a site-specific assessment (roof orientation, shading analysis, and regulatory compliance).

*This proposal ensures sufficient energy generation for a single-person villa household under typical U.S. conditions while accounting for practical constraints and opportunities for optimization.