75kWp + 172kWh Hybrid Solar System: Reliable Power Solution for Central American Tropical Resort

Near the Turks and Caicos Islands in Central America, there are numerous tropical islands boasting beautiful scenery and abundant sunshine—ideal destinations for travelers on vacation. Recently, the owner of one such resort approached us, hoping to have a suitable PV system designed for his houses. The reason? His island has long struggled with an unstable power grid, leading to frequent blackouts; even worse, during wind and rain, outages can last 5 to 6 hours, which seriously undermines the experience of the resort's guests.

To improve this situation, the client turned to our UE team. According to the resort’s daily electricity demand of 240kWh per day, we custom-designed a reliable 75kW hybrid solar system. This system comprises 120 pcs of UE bifacial 630Wp solar panels featuring N-type TOPCon technology, connected to 2*30kW three-phase hybrid-grid inverters from Deye, and integrated with a 2 * 86kWh high-voltage energy storage system (also from UE)—finally forming a robust power supply system.

The system met 95% of its daily electricity needs, resulting in monthly cost savings exceeding $9,800 , bringing the resort a tangible benefit.

Below is a breakdown of the system’s core components:

UE 630W Solar Panel 120pcs

N-Type TOPCon Bifacial Dual Glass Module

Dimensions: 23821134*30mm

Weight: 33.5kg

Efficiency: 23.32%

Deye 30kW Hybrid Inverter * 2pcs

Model: SUN-30K-SG01HP3 -US-BM4

Battery Voltage Range: 160-500V

MPPT Range (V): 150-500V

No.of MPP Trackers:4

Grid Type: Three-phase

86kWh High-voltage Lithium

Battery Cluster * 2 Clusters

Battery Module: 51.2V 280Ah

Battery Cluster: 6* Battery Module, 307.2V

280Ah(with 1 HV Box)

Cycle Life: 6000 Cycles @80% DOD

Communication: CAN/RS485/RS232

AC Distribution Cabinet (2 input 1 output)

2*63A 4P breaker input

1*150A 4P switch output

With copper busbar

SPD

Pilotlight

PV Combiner Box (6 input 6 output)* 2pcs

DC Breaker 4P 1000V 32A*6

SPD 3P 40KV*6

Fuse 1P 1000V 32A *12

Mounting Bracket

Customized for 120pcs 630W solar panels

Suitable for flat roof

Electrical connection diagram for 75kWp Hybrid PV+ESS System

Core Logic Behind the Customized System Design​

To address the resort’s unique needs, our UE team started with data-driven calculations to ensure every component aligned with on-site conditions.

First, the resort requires a steady 240 kWh of daily power—covering guestroom AC, restaurant equipment, and public lighting. The 75kWp system’s daily output is 300 kWh (75kW × 4h), which provides a 60 kWh buffer for cloudy days and ensures no gap in supply. This capacity is delivered via 120 UE 630W N-type TOPCon bifacial solar panels; unlike conventional panels, the bifacial TOPCon technology boosts overall generation by 15%–20%. At the same time, the mounting bracket with a special anti-corrosion design can operate for a long time at the seaside.

Two 30kW Deye hybrid inverters work in multiple models. The inverter also supports connecting to a diesel generator for long-term blackout. This flexibility is key to tackling the island’s erratic grid.

At the same time, 172kWh HV ESS stores enough power for approximately 4 hours of full-load operation. During power outages, it provides a timely power supply, ensuring minimal disruption to the resort.

Excellent Performance

Post-installation, the system delivered measurable results that exceeded the client’s expectations.​

Monthly generation consistently hits 280–360 kWh/day, covering 95% of the resort’s needs. The resort’s electricity costs dropped dramatically, saving over USD 9,800 per month. “We now receive almost no complaints from customers, and the rate of returning customers has increased by 20% – this is a huge improvement for our business,” said the resort owner.

Conclusion

For this Central American island resort, a 75kWp-60kW-172kWh hybrid solar system was far more than just a practical power solution—it eliminated power outages that severely impacted the guest experience, ensured operational stability, and directly enhanced the resort's competitiveness in the competitive tropical tourism market.

Beyond this success story, this 75kWp-60kW-172kWh hybrid solar system project also provides a replicable blueprint for countless similar tropical island resorts in the region. These destinations face two common scenarios: abundant sunlight (a PV advantage) and a fragile power grid—both addressed by our tailored solutions. UE stands ready to help more island businesses achieve grid independence: from small resorts to large commercial operations, our focus remains the same: transforming local sunlight into stable, affordable electricity, improving operational reliability, saving costs, and boosting guest satisfaction.