Windfarm construction is one of the most complex and demanding environments in the Irish construction sector. The scale, remoteness, and multi-disciplinary nature of these projects creates a risk profile that evolves dramatically from the first day of enabling works right through to the moment a turbine generates its first kilowatt. If you’re working on a wind energy project — as a PSCS, PSDP, site manager, safety officer, or subcontractor — understanding how those risks shift across each phase isn’t just good practice. It’s a legal obligation.

This guide walks through the full lifecycle of a windfarm project, phase by phase, covering the key hazards, the relevant Irish health and safety legislation, and the industry best practice that keeps people safe from greenfield site through to operational turbine.

Why Windfarms Are Different

Before diving into individual phases, it’s worth being clear about what makes a windfarm site fundamentally different from a standard construction project.

Remote locations. Wind energy sites are typically situated in upland, boggy, or exposed terrain, often with no mobile network coverage and many kilometres from the nearest emergency services. Response times in the event of a serious incident can be significantly longer than on an urban or suburban site.

Scale. A medium-sized Irish wind energy project might cover hundreds of hectares, with haul roads stretching for kilometres, dozens of turbine locations, and a substation compound — all running in parallel across multiple work fronts.

Multi-discipline interfaces. Civil engineers, structural contractors, electrical contractors, crane specialists, turbine OEM crews, and environmental monitors may all be working simultaneously. The interfaces between these disciplines are where many incidents occur.

Changing risk profile. The hazards on day one of a windfarm project — uncharted ground conditions, environmental sensitivities, lone working — are very different to the hazards on the day a tower section is being lifted. Understanding this shifting landscape is central to effective safety management.

Environmental exposure. Elevated, open terrain means exposure to wind, rain, lightning, and extreme cold. Weather windows are not just a programme concern — they are a safety-critical consideration, particularly during lifting operations.

Phase 1 — Enabling Works

Site Clearance, Ground Investigation, and Site Establishment

Enabling works set the foundation for everything that follows. They are often underestimated from a risk perspective, but they carry genuine hazards — particularly given the remote, uncharted nature of the ground.

Key activities:

• Topsoil stripping and vegetation removal

• Trial pits, boreholes, and probe testing for ground investigation

• Establishment of welfare facilities, site compound, and security measures

Key risks and controls:

• Underground services. Even in remote upland settings, power lines, telecommunications infrastructure, water mains, and gas pipelines can be present. A CAT scan and Genny sweep must be carried out before any excavation, however minor. Contact relevant utility owners in advance.

• Uncharted ground conditions. Bogs, soft ground, and buried obstructions can cause plant instability and unexpected collapse. Ground investigation findings must be communicated to all plant operators before work begins.

• Environmental designations. Many windfarm sites are located within or adjacent to Special Areas of Conservation (SACs), Special Protection Areas (SPAs), or Natural Heritage Areas (NHAs). Works must comply with planning conditions and Environmental Impact Assessment commitments. Ecologist input is often required on-site.

• Lone working. Ground investigation teams and surveyors frequently work in isolated areas with no nearby support. Lone worker procedures — including regular check-ins, GPS tracking, and emergency communication devices — must be in place before any lone working commences.

• Wildlife. Nesting birds, protected mammals, and other species protected under the Wildlife Acts 1976–2012 must be considered. A pre-works ecological assessment and wildlife watch during sensitive periods is standard on Irish wind energy projects.

Phase 2 — Access Roads and Haul Routes

Getting Heavy Plant and Components to Where They Need to Be

The haul road network is the circulatory system of a windfarm project. Everything — from excavators to 60-metre blade sections — travels these roads. Getting them right, and managing activity on them safely, is critical.

Key activities:

• Construction of access roads, turning circles, and hardstandings

• Culverts, watercourse crossings, and drainage works

• Traffic management on public roads

Key risks and controls:

• Plant and pedestrian interface. Narrow haul roads with limited passing places create significant risks where plant and people meet. A strict traffic management plan — including pedestrian-free zones during active haulage, high-visibility PPE requirements, and banksman controls — must be implemented from day one.

• Soft ground and instability. Haul roads crossing boggy or saturated ground can fail under heavy plant. Geotechnical specifications and ongoing ground condition monitoring are essential.

• Deep excavations for culverts. Culvert installation often requires excavations of two metres or more in wet ground. These must be assessed for confined space risk, and appropriate shoring or benching must be in place in accordance with the SHWW (Construction) Regulations 2013.

• Surface water and flooding. Working in upland catchments means drainage management is safety-critical, not just an environmental issue. Poor drainage control can destabilise haul roads and create slip hazards.

• Traffic management on public roads. Where haul routes cross or use public roads, Road Opening Licences (ROLs) and Section 38 licences under the Roads Act 1993 are required. A Traffic Management Plan, agreed with the local authority, must be in place and operationally enforced. Abnormal load movements require advance coordination with An Garda Síochána.

Phase 3 — Civil Works: Base Foundations

Building the Platforms That Hold Everything Up

Turbine foundations are large, heavily engineered reinforced concrete structures — typically 15–20 metres in diameter and 3–4 metres deep. The civil work to construct them involves some of the highest-risk activities on the project.

Key activities:

• Mass excavation to foundation depth

• Groundwater management and dewatering

• Reinforcement fixing and concrete pours

Key risks and controls:

• Excavation collapse. At 3–4 metres deep, an unshored excavation failure can be fatal. All excavations must be assessed by a competent engineer, and appropriate battering, benching, or shoring put in place. Excavation inspections must be carried out and recorded daily and after any adverse weather.

• Groundwater ingress. Upland sites commonly encounter high water tables. Dewatering must be managed carefully — both to maintain safe working conditions and to comply with EPA licence conditions. Rapid ingress can destabilise trench walls without warning.

• Confined space risk. Where sumps, drainage pits, or enclosed areas are involved in the foundation design, a confined space risk assessment under the SHWW (Confined Spaces) Regulations 2001 is required, including a rescue plan and atmospheric monitoring.

• Lifting of rebar cages. Prefabricated reinforcement cages are heavy, awkward, and require careful rigging. Lifting plans must be prepared under Part 2 Chapter 2 of the SHWW (General Application) Regulations 2007 for every non-routine lift.

• Concrete pour management. Large-volume pours involve significant quantities of concrete admixtures and plasticisers that carry COSHH risk under the SHWW (Chemical Agents) Regulations 2001. Appropriate PPE, MSDS sheets, and emergency eye wash stations must be available. Pour sequencing must be planned to avoid uncontrolled cracking and thermal stress.

• Large plant on soft ground. Excavators and concrete trucks operating at the excavation edge must have plant stability assessments. Ground bearing pressures must be considered.

Phase 4 — Ducting and Below-Ground Infrastructure

The Electrical Nervous System of the Site

Before turbines go up, the underground electrical infrastructure — HV/MV cables, draw pits, and substation civils — must be installed. This phase runs in parallel with and often overlaps other civil activities, creating interface hazards.

Key activities:

• HV/MV cabling route trenches and duct installation

• Draw pit construction

• Substation civils and cable duct installation

Key risks and controls:

• Electrical proximity. On repowering or upgrade projects where existing turbines remain live, working in proximity to live HV infrastructure is unavoidable. Exclusion zones must be established, and only competent persons authorised under the National Electricity Safety Rules (ESB/EirGrid) may work on or near live HV systems.

• Trench collapse. Cable trenches are narrower and often deeper than haul road excavations, with a higher risk of sudden collapse. Trench support systems must be specified, installed, and inspected daily.

• Manual handling. Heavy ducting sections, draw pit covers, and precast components create significant manual handling risks. Task-specific manual handling risk assessments under Chapter 1 of the SHWW (General Application) Regulations 2007 must be completed, and mechanical handling aids provided wherever practicable.

• Working in proximity to live cables. Even during new-build, adjacent infrastructure may be energised. Method statements must identify all live services, and the HV contractor must issue safe systems of work for all proximity work.

Phase 5 — Steel Fixing and Rebar Works

Precision Work with Real Hazards

Reinforcement work runs throughout the civil phases, but is most concentrated during the foundation rebar cage assembly and placement. It is physically demanding work that demands careful hazard management.

Key activities:

• Rebar cage assembly and placement

• Tie wire work and bar bending

• Crane-assisted cage placement

Key risks and controls:

• Rebar impalement. Vertical rebar bars above ground or in excavations present a life-threatening impalement hazard. PERI caps or mushroom caps must be fitted to every exposed vertical bar without exception — this is both an industry requirement and a basic duty under the SHWW (Construction) Regulations 2013.

• Manual handling. Rebar bundles are heavy and awkward. Mechanical handling equipment — crane, forklift, or dedicated rebar handling equipment — should be used. Where manual handling is unavoidable, it must be risk-assessed in accordance with Chapter 1 of the SHWW (General Application) Regulations 2007.

• Working at height in excavations. Fixing rebar at the base of a 3–4 metre excavation constitutes work at height. Fall protection must be provided at excavation edges, and access/egress must be by safe means — ladders or stairways of the appropriate standard.

• Overhead lifting of cages. Lifting a prefabricated rebar cage into an excavation is a significant lifting operation. A crane lift plan must be prepared and approved before the lift takes place. All persons must be clear of the lifting zone.

• Hand tools and cutting equipment. Angle grinders, disc cutters, and rebar benders carry cut, abrasion, and ejection risks. Appropriate PPE — including eye protection, cut-resistant gloves, and hearing protection — is mandatory.

• Noise and vibration (HAVs). Prolonged use of vibrating hand tools creates risk of Hand Arm Vibration Syndrome. Exposure must be assessed and managed in accordance with Chapter 3 of the SHWW (General Application) Regulations 2007.

Phase 6 — Turbine Erection

The Phase That Demands the Most Respect

Turbine erection is the most visible and arguably the most hazardous phase of the project. It involves extreme weights, extreme heights, and operations that are highly weather-dependent. On Irish windfarm projects, turbine erection is where comprehensive planning, competency, and communication are most critical.

Key activities:

• Delivery and offloading of tower sections, nacelle, hub, and blades

• Assembly of tower sections using crawler cranes (typically 500T+ capacity)

• Installation of nacelle and rotor assembly

• Commissioning of turbine electrical systems

Key risks and controls:

• Crane lift planning. Every major lift — tower section, nacelle, blade — requires a formal crane lift plan prepared by a competent person in accordance with the SHWW (General Application) Regulations 2007, Part 2 Chapter 2, and LEEA standards. The plan must include ground bearing pressure calculations, crane configuration, rigging details, exclusion zones, and communication protocols. Wind speed limits for each lift must be specified and enforced.

• Weather windows. Lifts must not proceed above specified wind speed thresholds — these are set by the OEM and must be incorporated into the lift plan. A dedicated weather monitoring protocol is required, and the lifting supervisor must have authority to stand down operations at any time.

• Fall from height. Working at hub heights of 80–150 metres presents extreme fall hazards. All access inside tower sections must be by certified internal ladder systems with appropriate fall arrest equipment. Tower access must be controlled and logged. Work at height must be managed in accordance with Part 4 of the SHWW (General Application) Regulations 2007.

• Dropped objects. At these heights, even a small dropped object becomes a potentially fatal projectile. Exclusion zones below the work area must be maintained. All tools must be tethered, and no unsecured materials may be taken aloft.

• Exclusion zones. During all crane lifts, an exclusion zone corresponding to the radial reach of the crane must be enforced. Access to the exclusion zone must be controlled by a nominated banksman, with the zone marked physically on the ground.

• High voltage commissioning. Turbine commissioning involves live HV work. Only authorised persons operating under a safe system of work consistent with the National Electricity Safety Rules may be involved. The PSCS must coordinate the commissioning handover carefully to avoid concurrent civil and HV activities.

• Blade assembly. Blade assembly on the ground and subsequent lift is a complex multi-crane or single-crane operation depending on the OEM’s procedure. Blade handling requires specialist rigging equipment and experienced lift supervisors.

Windfarm health and safety Ireland demands that wind turbine erection — as the most visible and complex operation on these projects — receives the most detailed pre-planning and the most rigorous management on site. PSCS windfarm obligations under the Construction Regulations are at their highest point during this phase.

The Changing Risk Profile: Greenfield to Working Turbines

A Site That Never Stays the Same

One of the most important things to understand about wind energy construction safety is that the risk profile is not static. It evolves continuously across the project lifecycle.

Early phase: The dominant risks are ground-related — unstable terrain, uncharted services, soft ground, environmental sensitivities. The site is open, and the greatest hazards involve plant working in uncontrolled ground conditions.

Mid phase: As infrastructure develops, the interface risks intensify. Multiple contractors share the same roads and compounds. Lifting operations begin to dominate the risk landscape. Working at height becomes the primary concern.

Late phase and commissioning: Civil and electrical risks coexist. As turbines are commissioned while other construction work is still live, the site must be carefully partitioned. Residual construction risk during commissioning — where live HV systems are adjacent to ongoing civil activity — demands tight permit-to-work controls.

Key management responses:

• Dynamic risk assessments must be reviewed and updated as the project moves through phases. A risk assessment written for Phase 1 is not adequate for Phase 4.

• PSCS/PSDP obligations under the SHWW (Construction) Regulations 2013 (S.I. 291 of 2013) require ongoing coordination, the maintenance of a live Safety File, and formal notification to the HSA at the outset of notifiable projects.

• Multi-contractor interfaces must be managed through coordination meetings, shared daily activity schedules, and clear identification of interface areas. The PSCS carries the coordination duty.

• Handover to O&M: Before any turbine is handed to the operations and maintenance team, all residual construction risk must be formally assessed, and a clear demarcation between construction and operational areas established. The Safety File must be complete and handed over.

Relevant Irish Health and Safety Law

Wind energy construction is subject to a comprehensive framework of Irish health and safety legislation. The key instruments are:

Safety, Health and Welfare at Work Act 2005 — the primary duty of care legislation. Every employer has a duty to ensure, so far as is reasonably practicable, the safety, health, and welfare at work of all employees.

SHWW (Construction) Regulations 2013 (S.I. 291 of 2013) — sets out the duties of the PSCS (Project Supervisor for the Construction Stage) and PSDP (Project Supervisor for the Design Process), the requirement for notification to the HSA on notifiable projects, the preparation and maintenance of a Safety File, and the appointment obligations on clients. Wind energy projects, by their scale and duration, are almost invariably notifiable.

SHWW (General Application) Regulations 2007 — the backbone of day-to-day site safety management:

• Part 2 (Workplace) — welfare facilities, environmental conditions

• Part 4 (Work at Height) — mandatory for all turbine erection, nacelle work, and any elevated task

• Part 2 Chapter 2 (Lifting Operations and Lifting Equipment) — covers crane lift plans, thorough examination of lifting equipment, competency of appointed persons

• Chapter 1 (Manual Handling) — applies across all phases

• Chapter 3 (HAVs) — relevant wherever vibrating tools are in use

SHWW (Chemical Agents) Regulations 2001 — applies to concrete admixtures, fuel, lubricants, and other hazardous substances on site.

SHWW (Confined Spaces) Regulations 2001 — applies to sumps, enclosed foundation areas, culverts, and any below-ground space meeting the confined space definition.

Roads Act 1993 and Road Traffic Acts — Road Opening Licences, Section 38 licences, and Traffic Management Plans are legal requirements for any work affecting public roads.

Environmental Protection Agency Act 1992 — licensing conditions are legally binding on windfarm projects that require EPA consent. Non-compliance is both an environmental and a legal safety issue.

Wildlife Acts 1976–2012 — protected species cannot be disturbed, injured, or killed. Nesting birds, bats, otters, and other species protected under these Acts require ecological management protocols on any windfarm site.

National Electricity Safety Rules (ESB/EirGrid) — all work on or near HV infrastructure, including turbine electrical commissioning, must comply with these rules. A valid Sanction for Testing and Energisation is required before any energisation takes place.

HSA Codes of Practice and guidance — while not legislation, the HSA’s published codes of practice represent the authoritative standard for compliance. Available at  hsa.ie .

Safe-T-Cert and ISO 45001 — while not legal requirements, these frameworks represent industry best practice for occupational health and safety management systems. Many Irish wind energy clients and contractors hold or require these certifications as a pre-qualification standard. Wind energy construction safety is increasingly assessed against ISO 45001 as a benchmark for contractor competency.

Industry Best Practice

Meeting the legal minimum is the floor, not the ceiling. The best-run wind energy projects go further, and the results are measurable — in fewer incidents, fewer near-misses, and stronger working cultures on site.

Pre-construction hazard identification. The PSDP’s Preliminary Hazard Identification is a legal obligation but also a genuine planning tool. Done properly — not just as a box-ticking exercise — it shapes the design to reduce risk at source before a single sod is turned.

Method statements and risk assessments for each phase. Generic risk assessments are not sufficient on a windfarm project. Every significant work activity must have a task-specific method statement, reviewed and signed off by the PSCS before work commences.

Toolbox talks and inductions. Site-specific inductions — not just generic SafePass refreshers — must be delivered to every person on site, including visitors and delivery drivers. Role-specific inductions for crane operators, electrical contractors, and confined space workers are essential. Toolbox talks should be delivered regularly, targeted at the specific phase of work underway, and recorded.

Emergency response planning. On a remote windfarm site, the emergency response plan must account for the practical challenges of getting help to a casualty. What is the nearest hospital with a trauma unit? What is the helicopter landing zone? Can the ambulance access the site gate? Who holds the site first aid certificate? These questions must be answered in writing before work begins, and the plan must be tested.

Competency verification. SafePass is a minimum. CSCS cards, plant operator certificates, MEWPs tickets, first aid at work qualifications, and relevant OEM training must be verified and recorded. No person should operate plant or carry out a specialist task without documented competency.

Environmental management. Fuel and chemical storage must comply with bunding requirements. Spill kits must be positioned throughout the site. Wildlife watching protocols must be implemented during sensitive periods. Environmental non-compliance on a windfarm site can lead to planning condition breaches with serious programme and legal consequences.

Behavioural safety programmes. The best windfarm safety cultures are built on more than rules. Behavioural safety programmes — structured observation, open reporting of near-misses, and genuine leadership commitment to safety as a value rather than a compliance exercise — make the difference between a compliant site and a genuinely safe one.

How DL Safety Can Help

Wind energy construction safety requires expertise across every phase — from the PSDP’s preliminary hazard identification through to the turbine commissioning handover. DL Safety provides health and safety consultancy, site audits, accident investigation, crane lift plans, and practical training to support clients working in the wind energy sector right across Ireland.

Whether you need a PSCS for a new-build wind project, an independent safety audit at any stage of construction, or competency training for your site team, we bring over 25 years of hands-on experience and a plain-speaking, practical approach that focuses on real-world outcomes — not paperwork for its own sake.

Get in touch with the team at DL Safety to talk through your project requirements. We’re here to help you build safely.

 Contact DL Safety — dlsafety.ie