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This 50kW 150kWh solar system powers a commercial bank branch in Liberia, providing reliable backup for critical banking operations including ATM networks, server rooms, and transaction processing systems. The facility consumes approximately 6,000-7,000 kWh monthly and requires zero downtime to protect customer data and maintain regulatory compliance.
Although the bank operates diesel generators as primary backup, prolonged holiday outages have caused repeated disruptions — when diesel fuel runs low during long holiday weekends, server shutdowns result in transaction failures, ATM outages, and potential data loss. The 150kWh battery capacity is specifically sized to maintain critical loads (servers, ATMs, networking equipment, lighting) for up to 3 days without grid or diesel support, fully covering extended holiday periods.
The integrated hybrid system combines grid-tie solar generation with battery backup and automatic transfer switching. During normal operation, the 50kW solar array reduces grid consumption. When grid fails, the system instantly switches to battery mode within 10 milliseconds, then seamlessly integrates diesel when needed. The 150kWh lithium BESS provides 3 days of autonomous operation for the 20kW average critical load — covering even the longest holiday weekends without fuel concerns.
Mars Solar dispatched 1 senior engineer for 7-day on-site commissioning. The team integrated the system with the bank's existing UPS infrastructure, configured priority load shedding for non-critical circuits, and set up encrypted remote monitoring for the IT manager. The bank achieved full ROI within 13 months while eliminating server downtime risks. The system includes iOS/Android apps for real-time monitoring, automatic monthly reports via WhatsApp and email, and 10-year warranty coverage.
A 50kW 150kWh solar system is the size most bank branches land on: 50kW of inverter power covers the simultaneous load of servers, ATMs, air conditioning and lighting, while the 150kWh battery bank carries three days of autonomy. A 50kW 150kWh solar system sized this way keeps a branch open through a holiday outage without a diesel run.
Financial sites have the strictest uptime requirements of any commercial building, which is why the battery is specified on autonomy rather than on bill savings. See how we size comparable loads on the zonne-energiesysteem voor een fabriek page.
Every 50kW 150kWh solar system we ship includes PV modules, a hybrid inverter, rack-mounted LiFePO4 batteries with BMS, automatic transfer switching, protection and remote monitoring. The transfer switch moves the branch between grid, battery and generator without an operator being present.
Cell-level monitoring reports state of health to a dashboard, so a weak module surfaces before it becomes downtime. The U.S. Department of Energy's energy storage programme documents why lithium storage now dominates backup applications of this kind.
Mars Solar builds and exports 50kW 150kWh solar system packages directly, so there is no distributor margin in the price. Each system is factory pre-tested with a 72-hour stability run before shipment, and carries a 10-year battery warranty and 5-year inverter warranty.
Compare the storage hardware on our in een rek gemonteerde energieopslagaccu page, or review a comparable deployment in our Sudan wastewater battery storage case.
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