PV and battery upgrade - Yunquera, Malaga

Type: Off-grid

PV: 1100W existing; 1140W upgrade; 2x Outback FM60 controllers

Batteries: 1000Ah gel replaced with 2100Ah lead-acid, 24V nominal

Hardware: Twin Outback 3kW inverters, 6kW total output

Other: 3kW Bornay wind turbine; 8kW diesel back-up generator with auto-start function

The existing 1000Ah battery bank had stopped holding charge and so was replaced with a 2100Ah bank. A new 1140W PV array was also installed to facilitate proper charging conditions for the batteries. Since the completion of the system upgrade, the back-up generator has not been used.