Communications infrastructure for wind farms and solar farms

The operational problem

Wind and solar farms sit where the resource is — not where the networks are. Yet the asset must report telemetry continuously, accept remote dispatch instructions, stream security video from a perimeter measured in kilometres, and give the O&M contractor reliable comms across the site. A consumer internet line does none of this with the availability an asset manager can take to a lender or a grid operator.

• SCADA backhaul — turbine and inverter telemetry to the control centre, with the uptime the performance contract assumes
• Grid-code communications — the resilient link your compliance obligations require, engineered rather than hoped for
• Security backhaul — cable theft and intrusion are financial events; camera streams need capacity, not best-effort
• O&M connectivity — site offices, technicians and cranes on one private network across the whole footprint

Why carrier-grade, not consumer internet

Consumer connections are contended, unmonitored and repaired on the provider's schedule. Carrier-grade infrastructure is engineered: terrain-profiled link paths, Fresnel-zone clearance, redundant solar power, remote monitoring, and a maintenance regime with accountability. When a link carries revenue-critical telemetry, the difference is not a technicality — it is the difference between an incident report and an insurance claim.

What CTTX builds

What this scope is called in the tender documents

Renewable-energy procurement rarely asks for "connectivity". It asks for TBOP — telecommunication balance of plant, and it sits in the EPC scope alongside the electrical balance of plant. If you are an IPP, an EPC contractor or an O&M provider looking for the company that does that package on a wind farm, a solar PV plant or a BESS site, this is the page.

CTTX has done this work at plant scale on operating wind and solar sites in South Africa — turbine-string fibre, OPGW, PV array fibre and the signed test packs that close the section out. Where a section failed on test, it was re-spliced and re-tested rather than signed off, which is the part of the scope that decides whether the plant is still arguing about its fibre three years later.

Questions we get from EPCs and asset managers

Do you test in both directions?

Yes. A single-direction OTDR trace can hide a splice that only shows loss when read from the far end. CTTX captures traces from both ends on every core and reports the pair. On a ring, adjacent and skip-link sections are checked so a section is not declared missing when it has in fact been tested through.

Can you work inside an energised plant?

Yes, under the site's permit-to-work system, with fall-arrest and working-at-height competencies in place for turbine and headgear work.

What do we get at the end?

An as-built set: route drawings, splice schedules, the OTDR test pack with pass/fail per core, and the loss budget measured against the design. It is the documentation the asset carries for the rest of its operating life, so it is built to be handed to a new O&M contractor and still make sense.

Can you also carry the site's connectivity, not just the fibre?

Yes. Where the plant needs a link off site, or between areas trenching cannot reach, CTTX engineers the wireless path as well — terrain-profiled, Fresnel-cleared, on proper masts with solar power where there is no supply.

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