Gray's Residence
- Grid-Tied Solar for Provincial Household
- System Size: 7.63 kWp
- Completion: 7-Jul-2024
- Luna, La Union, Philippines
Project Summary
For a retired expatriate settling permanently in Luna, La Union, the electricity brief was straightforward: significant savings, long-term reliability, and a system built to last without constant attention. Northern Luzon grid supply can be erratic, and for someone on a fixed retirement income, unpredictable bills are not acceptable.
Solaren specified SMA Germany SB6.0 inverter technology paired with Sunova Solar bifacial modules, monitored via SMA ennexOS. The system has delivered consistent savings since July 2024 with no reliability issues, performing exactly as designed across the coastal La Union climate.
The installation was also pre-engineered for battery storage integration from day one. The owner views storage as a long-term essential rather than an optional upgrade, and the system architecture already accommodates it without requiring redesign when the time comes.
For expatriates retiring to provincial locations where grid reliability is variable and long-term cost certainty matters, energy storage solutions planned into the original design deliver far better outcomes than retrofitting storage onto a system not built to handle it.
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











