Gray's Residence
- Grid-Tied Solar for Provincial Household
- System Size: 7.63 kWp
- Completion: 7-Jul-2024
- Luna, La Union, Philippines
Project Summary
Linda Gray’s 7.63 kWp coastal installation in Luna, La Union remains a net-metered, grid-tied system with its original SMA inverter and Sunova modules. The owner is considering storage, and Solaren’s proposed approach would retain that working equipment while adding a compatible hybrid inverter and batteries. This is one of the practical considerations in choosing an inverter for a future battery retrofit: the upgrade should work with the existing installation. Battery storage remains a proposed next stage.
The coastal location influenced equipment selection because of salt exposure. The utility supported the net-metering approval process, and the system has performed in line with forecast generation since commissioning in 2024.
System Performance
- System Size: 7.63 kWp
- Annual Generation: 11,254 kWh
- Day Peak Load: 6.49 kW
- Payback/ROI: 4.1 years
Financial Impact
- Daily Savings: ₱375
- Monthly Savings: ₱11,254
- Annual Savings: ₱135,051
- Lifetime Savings: ₱3,480,555
Technology Partners
- Inverters: SMA Germany SB 6.0
- Modules: Sunova Solar Bifacial
- Monitoring and Control: SMA ennexOS / Sunny Portal
Sustainability Impact
- TREES Planted Lifetime: 371
- CO₂ Lifetime: 158 tons
- Houses Powered Annually: 5











