The best underground cables for wind power and solar – order from us now

Why underground cables play a leading role in the energy transition

Wind turbines are spinning. Solar panels are generating power. But without the right underground cable, electricity stays exactly where it was generated – somewhere between the field and the substation. Especially in onshore wind and solar projects, which today need to be connected to the grid quickly and reliably, it becomes clear: Cable selection is not a footnote. It influences construction time, availability, maintenance effort – in short: project success. What matters are cables that:

• robust, durable and field-proven,
• are easy to install,
• and ideally are also available at short notice – without long lead times.

Some types have proven themselves particularly well – technically solid, economically attractive, and available from KLZ in many variants in stock. We will look at which ones these are in the next step.

These cable types set the standard in wind energy and photovoltaics

Anyone who wants to feed wind or solar power into the grid needs reliable connections – and thus underground cables that have proven themselves in practice. Three types are particularly common on the material list of project planners and site managers.

NA2XS(F)2Y – Medium voltage for ambitious projects

This cable is mainly used where wind turbines are connected to the medium voltage level. It is robust, resilient, and designed for common outdoor installation methods. Frequently used between turbines and transformer stations – especially for medium to large installations.

N2XS(F)2Y – when more power is required

Technically similar, but even more robust. The N2XS(F)2Y is mostly used when longer distances, greater capacities, or specific operational requirements are present. This type is also the safe choice when there is increased thermal stress.

NAYY – the classic for low voltage

In solar projects or around transformer stations, this cable type is an economical solution. Easy to lay, readily available, and perfectly sufficient for many low voltage applications – especially where no extreme loads are expected. The cables mentioned are in stock at KLZ in many cross-sections and available immediately – just ask here if needed.

What really matters when purchasing

Finding a good cable is one thing – actually getting the right one when you need it is a whole different story. Because even the best cable type is useless if delivery times get out of hand or technical details don’t match the plan. So, what matters is not just the product itself, but also who supplies it – and how. What is particularly important when purchasing underground cables for wind and solar projects: – Check availability: Which cross-sections and lengths can be delivered at short notice?
– Match technical specifications: Do insulation class, number of conductors, and construction match the plan?
– Calculate delivery dates realistically: Especially for construction projects with tight deadlines, buffer times are worth their weight in gold.
– Expert contacts: Those who not only sell cables, but also understand them, save you a lot of coordination work in the end. Whether medium voltage or low voltage – clear communication with the supplier usually brings more than ten pages of product specifications. And yes, a quick look at the warehouse never hurts.

In stock or delivery time? How we guarantee cable availability

Project schedules rarely allow for breaks. Approvals are suddenly granted, construction pits are finished faster than expected – and then the cables are missing. This is exactly where it is decided whether a project keeps moving or grinds to a halt. At KLZ, we rely on a stock strategy that avoids many bottlenecks from the outset. Instead of “just in time”, we often say: “already available”. What that means in practice:
– Common types like NA2XS(F)2Y, N2XS(F)2Y and NAYY in the most used cross-sections are available at short notice.
– We also stock special lengths or typical cable drums for wind and solar projects.
– For projects in Germany and the Netherlands, delivery is usually within a few days – directly to the construction site. This not only minimizes the risk of costly downtime, but also ensures more planning reliability internally. Those who know what is needed early on can get an idea even before actually placing the order – or simply ask what is currently available.

Conclusion: The right cables get your project online faster

Underground cables are the silent foundation of the energy transition. No headlines, no spinning blades, no shiny solar panels – yet without them, nothing works. Especially for onshore wind farms and large photovoltaic plants, the right cable solution makes the difference between success and frustration at the end of the construction phase. What has become clear in recent years: Most projects do not fail due to technology, but rather because of availability, coordination, and poor preparation. The cable type does not fit the application, the material arrives too late, or simply the right lengths are missing on site. This can be avoided – with planning, market knowledge, and a partner who knows what matters. At KLZ, we deliver not only underground cables but also experience from numerous projects in Germany and the Netherlands. And because we know that time is often the scarcest resource, we keep the most common types like NA2XS(F)2Y, N2XS(F)2Y, and NAYY in relevant cross-sections in stock – ready for immediate delivery, directly to your construction site if needed. So if you want to think ahead and plan your projects proactively, you’ll have a clear advantage. A quick call to us is all it takes – and the right solution is often just one inquiry away. 👉 Send your inquiry now – we deliver exactly what you need!