Cables and Wires for Photovoltaics

The demand for electricity from renewable sources has been growing rapidly for years. Photovoltaics play a central role in this growth, using the photoelectric effect to convert sunlight into electrical energy in solar cells. In order to make the energy produced in this way usable, the solar cells must be connected to modules which are then tied into larger photovoltaic systems.

Solar is the second-largest source of renewable energy in Germany after wind power. In 2025, solar power made up roughly 16 per cent of the German electricity mix, saving roughly 60 million tonnes worth of greenhouse gases. These impressive numbers are proof of how important photovoltaics are for the transition to renewable energies.

For photovoltaic systems, it is imperative that they are built with safe and durable cables. This includes not only the cabling between individual modules, but also the connections to the inverter. Because of the extreme weathering conditions that these systems must endure, the cables are subject to the highest of requirements. For cabling solar modules, HELU has the perfect solution: our SOLARFELX brand of high-quality, TÜV-certified solar cables. Thanks to their advanced sheath and insulation materials, they are not only flame retardant and halogen free, but also resistant to ozone, UV radiation, acids and bases, hydrolysis, and ammonia. Rodents don’t stand a chance! Our SOLARFLEX cables are also available with additional rodent protection.

For the infrastructure cabling of solar farms, HELU has different underground and medium-voltage cables available directly ex stock. If you’re looking for a more light-weight and economical alternative, we also offer aluminium cables. Additionally, we have robust and reliable MC4 coupler plugs for connecting PV modules and inverters. For quick and ergonomic assembly, the HELUTOOL PV-CT 6 Solar Crimping Tool is the ideal tool.

The HELUTOOL PV-CT 6 Solar Crimping Tool is currently available at a special price of €125 each instead of €150, whilst stocks last.

• Cables and wires for the safe transmission of power within PV applications

• Solutions for solar farms and ground-mounted systems with high requirements regarding reliability and durability

• Connection technology and supplementary components

• Support with projects and technical consultations from our experts