Ireland Dublin School Rooftop Solar Pilot Project

In 2025, when Ireland's photovoltaic (PV) market was in the initial development stage, our company, Dongguan GERITEL Electrical Co., Ltd., successfully undertook the wire export supply task for the Ireland Dublin School Rooftop Solar Pilot Project. As a small-scale rooftop distributed PV project in the education industry with an installed capacity of 20kW, it is a typical pilot project under the background of the Irish government's promotion of green energy transition and improvement of PV subsidy policies. The project aims to provide clean electricity for the school, reduce operating costs, and accumulate practical experience for the construction of small-scale rooftop PV projects in Ireland. As a professional wire export supplier, we successfully completed the project supply with compliant product certifications, precise pain point solutions and efficient delivery capabilities, winning high recognition from the customer and injecting reliable cable support into the initial development of Ireland's PV market.

I. Project Background

Ireland's PV market is currently in the initial development stage, with low overall installed capacity. Projects are mainly concentrated in small-scale rooftop distributed projects of 5–50kW, among which rooftop PV of schools and industrial plants are the mainstream scenarios. Local policy support is gradually improving, and green electricity price mechanisms and PV subsidy policies have been successively implemented, promoting more institutions to participate in PV pilot construction. However, there are still many industry pain points: the local technical maturity and construction experience are limited, and most installation teams lack professional skills in rooftop PV wiring; the cable specifications on the market are complex, and customers have obvious confusion in selecting cables suitable for outdoor rooftop environments and meeting international standards; the school's rooftop structure is complex, mostly with slope design and dense brackets, making wiring difficult; as an educational institution, the project budget is limited, and it is necessary to control costs while ensuring quality; in addition, customers are also worried about the stability of cables used outdoors for a long time and the convenience of later maintenance.

The core demand of this Dublin school rooftop PV pilot project is to provide safe, durable and adaptable wire products for all links of the PV system, including PV modules to combiner boxes, combiner boxes to inverters, inverter control and monitoring lines, and system grounding wires. At the same time, we need to provide comprehensive technical support and cost optimization solutions to solve the core pain points of local construction, selection, budget and other aspects. After comparing multiple suppliers, the customer finally chose us. The core reasons are that our PV cables have authoritative TUV certification, precise product specification adaptation, rich experience in undertaking similar projects, and we can provide one-stop pain point solutions with fast and guaranteed delivery.

II. Product Overview

In response to the needs of this project, we accurately matched four categories of core wire products. All products meet international standards, among which PV cables have authoritative certifications to ensure adaptation to the harsh outdoor environment of Irish rooftops, distinguishing them from the shortcomings of ordinary cables and providing guarantee for the long-term stable operation of the project.

Our PV cables have passed TUV certification with certificate number B 126326 0001 Rev.00 and also have UL certification, fully complying with international PV industry standards; other wire products have passed IEC national standard certification to ensure product compliance and reliability. PV cables adopt high-purity copper conductors with low conductive loss and high transmission efficiency. The insulation layer and sheath are made of irradiated cross-linked low-smoke halogen-free flame-retardant polyolefin material, which can operate stably in a wide temperature range of -40℃ to +90℃, withstand long-term ultraviolet radiation and outdoor moisture erosion, and have a service life of more than 25 years.

The specific product configurations are as follows, and all wire models have been accurately calculated to adapt to the actual needs of the project:

1. PV Modules to Combiner Boxes: Adopt two-core PV Cables with specification of 6mm², copper conductor material, excellent UV resistance and low temperature resistance, good bending performance, with a bending radius of only 4D (D is the cable outer diameter), suitable for outdoor rooftop laying, which can effectively resist the changeable climate environment in Ireland and avoid insulation layer embrittlement and cracking;

2. Combiner Boxes to Inverters: According to the wiring distance and current demand, single-core or two-core PV Cables are selected, with specifications covering 6mm²–10mm². Among them, 6mm² specification is used for short-distance wiring, and 10mm² specification is used for long-distance wiring, which also has weather resistance and can ensure the stability and safety of system power transmission;

3. Inverter Control and Monitoring Lines: Adopt control cables (H05VV-F) 3×1.5mm², flexible conductor design, easy to wire in areas with dense brackets, support small current signal transmission, and can stably connect inverters with monitoring systems and sensors to realize real-time monitoring of the PV system;

4. Grounding Wires: Adopt yellow-green insulated copper wires with specifications of 4–6mm². Among them, 4mm² specification is used around PV modules, and 6mm² specification is used around equipment such as combiner boxes and inverters, which is corrosion-resistant, meets electrical safety standards, provides reliable safety grounding protection for the entire PV system, and avoids leakage and short-circuit risks.

Compared with ordinary cables, our products have significant advantages: ordinary cables mostly use PVC base material, which is easy to release harmful gases at high temperatures and has poor weather resistance. They may have problems such as surface cracking and insulation layer aging after 1-2 years of use in the outdoor environment of Ireland; while our PV cables adopt double-layer co-extrusion technology, the outer layer is added with nano-level ultraviolet stabilizers, and the inner layer optimizes the cross-linking density, taking into account heat resistance and low-temperature bending performance. At the same time, they have passed TUV/UL dual certifications, and each meter of cable has passed 20kV DC withstand voltage test, with more guaranteed quality, which is one of the core reasons why customers choose us.

III. Core Pain Point Solutions

In view of the five core pain points of construction, selection, structure, budget and maintenance faced by customers, we formulated a one-stop solution combined with the actual situation of the project, followed up the project progress throughout the whole process, ensured that each link can be efficiently implemented, and solved customers' worries.

1. Lack of Construction Experience: Considering that local installation teams in Ireland lack experience in rooftop PV wiring, we compiled a complete construction guide in advance, detailing the laying specifications, bending radius requirements and wiring skills of various cables, and also produced easy-to-understand construction training videos covering wiring processes, safety precautions and other contents. In addition, we arranged professional technical personnel to provide on-site support, guide the installation team to operate hand-in-hand, help them quickly master rooftop PV wiring skills, avoid construction errors and construction period delays, ensure that the wiring complies with relevant IEC standards, strictly prohibit 90° laying, and add crossbars during vertical laying to prevent accelerated aging and damage of lines due to gravity.

2. Confusion in Cable Selection: Initially, customers were unclear about the specifications and certification requirements of PV cables, making it difficult to match project needs. Combined with the project's installed capacity, wiring distance, current load and other parameters, we provided customers with a detailed specification matching table, clearly recommending PV cables that meet TUV/UL certifications (certificate number B 126326 0001 Rev.00). Among them, 6mm² two-core PV Cables are preferred for PV modules to combiner boxes, and 6mm²–10mm² single-core or two-core PV Cables are selected for combiner boxes to inverters according to actual needs, and 3×1.5mm² RVV control cables are selected. At the same time, we clearly informed customers that our products have UV resistance, low temperature resistance, waterproof and other characteristics to ensure long-term safety and reliability, completely solving customers' confusion in selection.

3. Complex Rooftop Structure: The Dublin school's rooftop is a slope design with dense PV brackets and narrow wiring space. Ordinary cables have poor bending performance and are difficult to adapt to complex wiring environments. We provided customers with flexible PV cables and modular wiring solutions, optimized the cable bending radius, enabling it to flexibly adapt to slopes and areas with dense brackets, reducing construction difficulty and potential cable damage, and avoiding friction between cables and PV modules and brackets to extend the service life of cables.

4. Budget and Cost Constraints: As an educational institution, the customer has strict control over the project budget and hopes to reduce costs while ensuring quality. We reduced cable usage through systematic optimization design and reasonable planning of wiring paths, and provided customers with cost-effective PV cable combinations. On the basis of ensuring core performance such as TUV/UL certification and weather resistance, we optimized product costs, and at the same time supported phased procurement to reduce customers' one-time capital pressure, taking into account both performance and cost to meet customers' budget needs.

5. Long-term Maintenance and Monitoring Issues: Customers are worried about the maintenance difficulty and monitoring convenience of cables used outdoors for a long time. We provided customers with a complete set of operation and maintenance guidelines, including detailed inverter monitoring system wiring, daily cable inspection, aging replacement plans and other contents, guiding customers to regularly inspect cables, timely clean surface dust and debris, and prevent cable damage caused by the "hot spot effect". At the same time, we provide after-sales remote support services. If customers encounter any problems during maintenance, they can contact us at any time, and we will provide technical guidance as soon as possible to ensure the long-term stable operation of the PV system.

Full-process Quality Control + Efficient Delivery to Escort Project Performance

The safe and stable operation of PV projects is inseparable from the control of every detail from product production to on-site delivery; and efficient performance is the core confidence for us to win customers' trust. Combined with the particularity of this Dublin school rooftop PV project, we built a "quality first + full follow-up" service model, which not only adheres to the safety bottom line, but also ensures the project is completed on schedule.

In terms of quality and safety, we adhere to strict standards throughout the entire product life cycle. In the production link, all products such as PV cables and control cables adopt high-purity copper conductors and high-quality insulation materials, strictly following TUV/UL and IEC certification standards. Each batch of PV cables undergoes comprehensive tests such as 20kV DC withstand voltage, UV resistance and low temperature resistance to ensure compliance with the TUV certification requirements of certificate number B 126326 0001 Rev.00, and prevent any unqualified products from leaving the factory. In response to the changeable outdoor climate environment in Ireland, we additionally conducted enhanced tests on PV cables for moisture resistance and corrosion resistance, ensuring that the cables can operate stably in a wide temperature range of -40℃ to +90℃, and laying a solid foundation for the long-term safe operation of the project from the source by avoiding potential safety hazards such as leakage and short circuits.

In terms of delivery execution, we fully considered the complexity of international transportation and the customer's construction period needs, and built an efficient supply chain system. Considering that the project is a pilot project and the customer has clear requirements for the construction period, we optimized the production process, promised fast delivery, and adopted professional protective packaging to avoid damage to cables during long-distance transportation. For the international customs clearance link, we prepared complete certification materials and customs clearance documents in advance, and assisted customers in handling customs clearance procedures throughout the whole process to effectively avoid customs clearance delays. During the project progress, we arranged a dedicated contact person to feedback the production, transportation and construction progress to the customer in real time, actively coordinate and solve various unexpected problems, and provide full escort, finally ensuring the project is completed on schedule and fulfilling the commitment to the customer.

Two-way Empowerment to Achieve Win-win Cooperation

After several months of collaborative promotion, this Ireland Dublin School Rooftop Solar Pilot Project was successfully completed and put into regular operation, which not only achieved the customer's core demands, but also realized two-way empowerment between us and the customer, as well as the Irish PV market, delivering a win-win answer.

From the perspective of customer value, the successful implementation of the project has brought tangible benefits to the school: it can stably supply about 22,000 kWh of clean electricity every year, greatly reducing the school's electricity expenses, and at the same time practicing the concept of green environmental protection, creating a sustainable campus environment for teachers and students, which has been highly recognized by the school and the local government. More importantly, the one-stop solution we provided completely solved all the pain points of customers in construction, selection, budget, maintenance and other aspects, helping customers reduce project costs, shorten the construction period, and reduce the pressure of later operation and maintenance, allowing customers to focus on the overall project implementation without being distracted by cable-related issues. The customer highly affirmed our product quality, technical support and delivery efficiency, recognized our rich experience in undertaking similar projects and authoritative product certifications, and clearly expressed the intention of long-term cooperation in the future.

For us, the successful delivery of this project not only successfully expanded the export business of the Irish PV market, but also established a professional and reliable brand image in the local initial PV market, laying a solid foundation for undertaking more small-scale rooftop distributed PV projects in the future. At the same time, through in-depth participation in this pilot project, we further optimized the product configuration and solution of PV wires, accumulated service experience adapted to the needs of the Irish market, improved the service capacity in the international market, and achieved double improvement in brand value and market competitiveness.

Seize the Opportunity of Ireland's PV Market and Join Hands with Us to Start a Green Future

At present, Ireland's PV market is in the golden stage of initial development, with continuous increase in policy support, continuous improvement of green electricity price mechanisms, increasing demand for small-scale rooftop distributed PV projects, and huge market potential. However, at the same time, problems such as insufficient local technical maturity, difficult cable selection and lack of construction experience still restrict the efficient implementation of projects, and also provide a broad cooperation space for professional wire suppliers.

As a supplier deeply engaged in the wire export field with rich experience in undertaking similar projects, our core advantages are self-evident: our PV cables have TUV certification (certificate number B 126326 0001 Rev.00) and UL certification, and other wires have passed IEC national standard certification, with absolute quality guarantee; we can accurately match product specifications according to actual project needs, providing a full range of adapted products from 6mm² two-core PV Cables to 3×1.5mm² RVV control cables; we can also provide one-stop services such as construction guidance, selection suggestions and after-sales operation and maintenance, accurately solving various pain points of customers in the project, and ensuring fast delivery and reducing customers' capital pressure.

Whether you are an EPC contractor for Irish PV projects, an institutional customer such as a school, or a practitioner in the PV industry, as long as you have wire supply needs for rooftop PV projects, we can tailor exclusive solutions for you, and use high-quality products and professional services to help your projects be efficiently implemented and operate stably for a long time.

The opportunity of Ireland's PV market has arrived. Only by choosing a reliable partner can we seize the development dividends. Contact us now to get an exclusive PV wire solution, and join hands to develop the new green energy market in Ireland and win the new future of the industry!

Dongguan GERITEL Electrical Co., Ltd.

Tel/WhatsApp/WeChat: +86 135 1078 4550 / +86 136 6257 9592

Email: manager01@greaterwire.com

Keywords: Ireland wire export, Dublin rooftop PV wires, TUV certified PV cables, PV cables exported to Ireland, school rooftop PV wire solutions