Antigua and Barbuda Photovoltaic & Energy Storage System Project

In early 2024, we received an inquiry from a renewable energy development company in Antigua and Barbuda, a country in the Caribbean. The company was preparing for a large-scale photovoltaic and energy storage project and was in urgent need of a reliable wire supplier. At that time, they had been preparing for the project for a while but had repeatedly hit a wall in wire supply. By chance, they learned that Dongguan GERITEL Electrical Co., Ltd. had rich experience in similar projects and complete UL certifications, so they took the initiative to contact us, hoping we could help them solve their urgent problems.​
The Client’s Dilemma​
After in-depth communication, we learned that the client’s project was quite ambitious: they planned to build a 720kW hybrid solar power station with an 863kWh energy storage system, aiming to help Antigua and Barbuda achieve its national goal of meeting 15% of its electricity needs through renewable energy by 2030. However, the project was located on the coastal area of Antigua, where the high temperature, high humidity, and occasional tropical storms posed extremely high requirements for the durability of the wires. What troubled them even more was that the several suppliers they had contacted before failed to meet their core needs:​
Some had no UL certifications, making their products unable to pass the inspection of local authorities and unable to enter the construction site; some had substandard wire quality, which showed insulation peeling during simulation tests and could not withstand the salt spray and ultraviolet radiation in the coastal area; another supplier promised the delivery time but repeatedly delayed, and as the 6-month project deadline approached, they were at risk of losing national renewable energy subsidies, which would bring heavy economic losses.​
The client admitted that they had compared many suppliers and valued three key points most: formal UL certifications, products suitable for harsh coastal environments, and guaranteed delivery time. Our years of experience in undertaking global photovoltaic and energy storage projects and complete qualifications perfectly met their needs. The two parties quickly finalized the cooperation, and we immediately set up a special project team to start customizing the wire solution for the project.​
Customized Wire Solutions​
Our technical team sorted out the core needs of the project at the first time, and selected 6 core wire models according to the coastal climate characteristics and different usage scenarios of the photovoltaic and energy storage system, each with matching specifications to ensure perfect performance.​
For the connection link of solar panels, the "nerve endings" of the entire photovoltaic system, we recommendedPV1‑F and TS‑PV wires specially designed for photovoltaic systems, with specifications ranging from 1.5mm² to 10mm². These wires adopt tinned copper conductors, which are not only more flexible and convenient for on-site laying by construction personnel but also treated with irradiation cross-linking technology. Their insulation layer can withstand high temperatures up to 125℃ and has far superior UV resistance compared with ordinary wires. Compared with ordinary PVC wires on the market, these two models have a service life of more than 25 years, greatly reducing the later maintenance costs. After comparison, the client immediately confirmed these two models for panel connection.​
For the wire used in the project construction link, we chose the THWN model, including the THWN power wire for construction specially used for construction, with specifications from 12AWG to 4/0 AWG. It adopts thermoplastic PVC insulation and a nylon sheath, which can withstand a high temperature of 90℃ in dry environments and work stably at 75℃ in wet environments, perfectly adapting to the high humidity characteristics of the coastal area. Unlike ordinary THHN wires that can only be used in dry or damp environments, our THWN wires are specially added with an anti-corrosion coating to fundamentally avoid insulation damage caused by seawater moisture and salt spray, which is one of the key reasons why the client chose us.​
For the energy storage system and the high-temperature area of the power station, we matched three models: XHHW, THHW, and RHH/RHW. The XHHW wires, with specifications from 8AWG to 35mm², use cross-linked polyethylene insulation, which has better thermal stability and chemical resistance than PVC insulation and can work stably at 90℃ in both dry and wet environments. The THHW wires (14AWG to 25mm²) are specially designed for high-temperature environments, suitable for connecting energy storage batteries and inverters. The RHH/RHW wires (6AWG to 50mm²) adopt heat-resistant rubber insulation, which is extremely flexible and suitable for high-voltage connections in energy storage systems. The three models work together to ensure stable and lossless power transmission of the entire energy storage system and power station.​
Safety Assurance: Certifications & Quality​
The UL certification, which the client cared most about, was fully prepared on our side. All wires supplied this time, including PV1‑F, TS‑PV, THWN, XHHW, THHW, and RHH/RHW, have passed UL certifications, including UL 83 and UL 4703 standards for photovoltaic cables. Every certification document is verifiable and queryable, fully complying with the electrical regulations of Antigua and Barbuda, allowing the client to pass the local authority inspection in one go and avoid the trouble of repeated rectification.​

In addition to certifications, our quality control is also a major advantage that reassures the client. Starting from raw material procurement, we select high-purity copper conductors with a conductivity of 59.6 ms/m to ensure the minimum energy loss during power transmission. The insulation materials are high-quality, non-toxic and environmentally friendly, complying with RoHS directives, which not only guarantees safety but also meets the local environmental protection requirements. After the production of each batch of wires, they will go through a series of strict tests, including insulation resistance, conductor resistance, and tensile strength tests, with a pass rate of 100%, ensuring that no unqualified products leave the factory.​
More importantly, we have undertaken dozens of global photovoltaic and energy storage projects, familiar with the climate characteristics and project requirements of different regions. We pre-judged the salt spray corrosion problem in the coastal area of Antigua and Barbuda and specially added an additional anti-corrosion coating to the THWN and RHH/RHW wires, which further enhanced the durability of the products. This professional consideration also made the client more recognized of our strength.​
Efficient Delivery: Fulfilling the Deadline Commitment​
The client repeatedly emphasized that the project had a tight schedule and must be completed within 6 months, so the delivery time of the wires was crucial. We fully understood this and adjusted the production plan immediately after signing the contract, listing the project as a priority production project. With the support of advanced production lines, we completed the production of 50,000 meters of wires of all models in only 25 days, nearly half shorter than the industry average production cycle of 40 days.​
In terms of logistics, we cooperated with a professional international logistics company with rich experience in exporting to the Caribbean region, which was fully responsible for customs declaration, commodity inspection, and other procedures, avoiding delays caused by cumbersome export procedures. At the same time, we equipped the wires with moisture-proof and shock-proof professional packaging to prevent damage caused by moisture and collision during transportation. It only took 15 days from the completion of production to the arrival of the goods at the Port of St. John’s in Antigua and Barbuda, 3 days earlier than the agreed delivery time, winning valuable time for the client’s construction progress.​
After the goods arrived at the construction site, our technical team provided remote guidance, informing the construction personnel of the precautions for connecting PV1‑F wires to solar panels and the installation specifications of THWN wires in wet environments, helping the client complete the wire laying smoothly and avoiding potential safety hazards caused by improper installation.​
Project Completion: Living Up to Expectations​
In July 2024, the large-scale photovoltaic and energy storage power station in Antigua and Barbuda was successfully completed and put into operation. Up to now, all the wires we supplied have been operating stably for more than 8 months without any quality problems. The PV1‑F and TS‑PV wires have no insulation aging or peeling under long-term outdoor exposure and high humidity; the THWN power wire for construction and XHHW wires have maintained stable power transmission in the coastal humid environment, without short circuits or leakage.​
The success of the project not only helped the client successfully obtain national renewable energy subsidies but also provided clean electricity for Antigua and Barbuda, reducing carbon emissions by 800 tons per year. The client’s project income exceeded expectations, and the stable performance of our wires also reduced their later maintenance costs by 30% compared with previous projects. What made the client more satisfied was that our professional services solved their most troublesome problems, laying a solid foundation for their development in the local renewable energy field.​
Win-Win Cooperation: Client Recognition & Long-Term Partnership​
The smooth completion of this project has established a long-term and stable cooperative relationship between us and the client. The client highly recognizes our products and services, stating that our UL-certified wires, products suitable for harsh environments, and on-time delivery have directly solved their urgent needs, which are the key factors for the success of the project.​
Compared with other suppliers they contacted, our products have obvious advantages in quality and durability, and our proactive and professional service attitude has also left a deep impression on them. The client has not only expressed their intention to cooperate with us in future photovoltaic and energy storage projects in Antigua and Barbuda but also recommended our company to other local renewable energy developers, bringing us more potential cooperation opportunities.​
For Dongguan GERITEL Electrical Co., Ltd., this project is another successful practice in the field of global photovoltaic and energy storage wire export, fully demonstrating our strength in certifications, product quality, delivery capacity, and professional services.​
Choose GERITEL: Contact Us Today​
If you are undertaking a photovoltaic and energy storage project in Antigua and Barbuda or other regions, and are troubled by the lack of UL-certified wires, poor product adaptability to harsh environments, or delayed delivery, Dongguan GERITEL Electrical Co., Ltd. is your ideal partner.​
We provide a full range of high-quality wires, including PV1‑F, TS‑PV, THWN, XHHW, THHW, and RHH/RHW, all with complete UL certifications and strict quality control. Our advantages also include rich experience in global projects, customized solutions, efficient delivery, and professional technical support.​
Don’t let wire problems delay your project progress. Contact us now to get a customized wire supply solution for your project. We are committed to providing you with high-quality products and professional services to help you achieve project success and create greater value.​
Dongguan GERITEL Electrical Co., Ltd.​
Tel/WhatsApp/WeChat: +86 135 1078 4550 / +86 136 6257 9592​
Email: manager01@greaterwire.com