Solar power for Cuba

It took a long time, but we have found what we hope is a satisfactory solution. Finding a reliable solution to the problem of solar power supply in Cuba proved to be much more difficult than initially thought.
Our first idea was simply to use the technology of the balcony power plants familiar here. However, upon closer inspection, this option proved unfeasible. A balcony power plant requires a stable public power grid to function. The next possibility was the so-called off-grid systems offered here, but these also didn't yield satisfactory results, as these systems are mostly based on 12 or 24 volts and, moreover, often involve considerable installation effort. Furthermore, the necessary certification and approval for transporting batteries is a real challenge.
In cooperation with a certified specialist company and the company Growatt, we finally managed to assemble a system that meets all the requirements in Cuba and, above all, our requirements for temperature stability and durability/performance guarantee.

Size 1
1 pc. Growatt – SPF 3500 Off-Grid Inverter 1 Phase, IP20, hybrid, off-grid, 110 Volt 50/60 Hz 3.5 kW
5 pcs. Yes Solar 440W Bifacial Glass-Glass Full Black JAM54D41 2200 Wp (or equivalent depending on availability)
1 pc. Growatt AXE Battery Storage Module LiFePO4 5.12 kWh
1 pc. Cable set / connection material
1 x. Delivery free to Havana, Cuba. (Delivery to the recipient's doorstep throughout Cuba is possible. Please inquire about costs.)
Price per unit free to Havana: €2,953.30

The off-grid solar system shown here consists exclusively of brand-name components with highly flexible expansion options. The maximum PV input power is 4500 Wp. The storage capacity can be expanded up to 25.6 kWh. Another advantage is that the batteries can also be charged via the available grid power supply. (Feeding power directly into the grid is not possible without an expansion module.).

The system size shown here (1) is certainly not sufficient to cover the electricity needs of a house. However, the PV output should be sufficient during the day, even with moderate sunlight, to operate refrigerators and fans in the event of a power outage. For nighttime power outages, a fully charged 5 kWh battery should be sufficient to power the refrigerator and fans until morning.

System size 2. Our recommendation for Cuba
: 1 Growatt SPF 3500 unit with
10 solar panels (440W each), total: 4400 Wp
; 2 Growatt battery storage modules (5 kWh each), total: 10 kWh
; 1 connection kit (extended);
1 delivery;
total price: Unit size 2, free delivery to Havana €4,364.34

System size 3.
1 unit Growatt SPF 6000T DVM-MPV 120/240V Split Phase Off-Grid 6kW
12 units Solar panels 440W total: 5280 Wp
3 units Growatt battery storage modules 5 kWh total: 15 kWh
1 unit Connection material (extended).
1 x Delivery
Total price: Unit size 3, free delivery to Havana €6,967.84

The system can be installed by virtually anyone with basic technical skills! Detailed instructions (in Spanish), video support, and Spanish-speaking support are included.

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