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How Cables Ensure Operational Reliability in Renewables Infrastructures
By 2030, global electricity demand is projected to increase by 50%, driven by electrification and digitalization. Renewables infrastructures is becoming an increasingly attractive option as an energy alternative. Renewable energy engineers face the challenge of designing increasingly robust and highly efficient infrastructures that comply with both local and international standards.
In renewables infrastructures, solar cables are the “highways” that carry this energy. Therefore, the correct selection of high-performance, certified solar cables compliant with standards such as IEC 62930 and the European CPR (Construction Products Regulation) ensure operational reliability, maximizing both the lifespan and safety of every renewable project.
We can distinguish between three types of projects based on renewables infrastructures.
SOLAR CABLES FOR EPC BUSINESS UNITS
EPC (Engineering, Procurement and Construction) companies require solar cables that comply with the EN 50618 standard (harmonized across Europe), which regulates the technical and safety requirements for photovoltaic power cables. Furthermore, installations must adhere to national low-voltage electrical regulations, ensuring the use of cables with adequate cross-section and insulation. For installations in public spaces, it is mandatory to install cables with a CPR (Construction Products Regulation EU 305/2011) classification, at least Cca-s1b, d0.
The most common cables in projects for EPC business units are:
- TOPSOLAR® H1Z2Z2-K (string cable, cross-sections of 4 mm², 6 mm², 10 mm², or 16 mm²).
- TOPSOLAR® PV Al 1500 V (aluminum).
- TOXFREE® H07Z1-K Cu/Sn (auxiliary services).
SOLAR CABLES FOR DISTRIBUTED GENERATION-CPPA
A corporate PPA (cPPA: corporate Power Purchase Agreement) is a long-term contract for the purchase and supply of renewable energy from a power generator to a consumer, which is a corporate client. Different cPPA structures are available, including on-site PPAs with private cable connections from an on-site generation plant, or off-site PPAs with a contract to supply energy via the grid from a plant located away from the customer’s facilities.
For self-consumption and distributed cPPA generation, compliance with the relevant European and national framework directives on self-consumption and renewable energy is essential, often transposed into national laws.
The most common cables in cPPA projects are:
- TOPSOLAR® H1Z2Z2-K (string cable, cross-sections of 4 mm², 6 mm², 10 mm², or 16 mm²).
- TOPSOLAR® PV Al 1500 V (aluminum).
- X-VOLT® RHZ1 AL (Medium Voltage).
SOLAR CABLES FOR UTILITY SCALE
We can also find renewables infrastructures of much larger dimensions. A utility-scale solar project is a large-scale electrical power generation initiative, often exceeding 10 MW and reaching hundreds of megawatts or even gigawatts. They connect directly to the electrical transmission system to distribute the generated energy to residential, commercial, and industrial consumers. These projects typically use high-capacity technologies, such as central inverters, to manage large energy volumes.
In large solar parks, in addition to following the aforementioned standards (EN 50618, CPR), it is common to apply HD 60364-7-712 [link], which defines specific requirements for photovoltaic power supply systems. All cables must be properly documented (technical data sheets, certifications, and CE marking) to facilitate inspection and legalization of the installations by control bodies and to simplify long-term maintenance.
The most common cables in utility-scale projects are:
- TOPSOLAR® H1Z2Z2-K (string cable, cross-sections of 4 mm², 6 mm², 10 mm², or 16 mm²).
- TOPSOLAR® PV Al 1500 V (aluminum).
- X-VOLT® RHZ1 AL (Medium Voltage).
- TOXFREE® H07Z1-K Cu/Sn (auxiliary services).
- DATALAN® FO (fiber optic).
- POWERFLEX® ULTRA (BESS – Battery Energy Storage Systems).
TOP CABLE ADVANTAGES IN RENEWABLES INFRASTRUCTURES
Top Cable guarantees:
- 100% manufacturing in Barcelona (Spain, Europe) under strict quality controls and compliance with major European and international standards.
- Dedicated production and agile logistics for large projects and custom installations.
- Sustainable manufacturing, following ESG criteria, facilitating Environmental Product Declarations (EPDs) for its complete range of solar cables.
- Specialized technical support for the selection and design of photovoltaic cables according to applicable national, European, and international regulations and the project’s technical needs.
Do you want to know the complete range of certified solar cables, standards, and technical references? Download the Top Cable catalogue for renewables infrastructures.
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