What OES Consulting does

OES Consulting is an independent Irish professional services consultancy founded in 1999 and headquartered in Dundalk, Co. Louth, with a second office in Newry, Co. Down (UK), serving clients across Ireland and the United Kingdom. The firm delivers three integrated service lines: Safety Services (health and safety consultancy including PSDP/PSCS, occupational hygiene, and ISO 45001 systems); Sustainability Services (planning, Appropriate Assessment, Environmental Impact Assessment, IPC/IED licensing, environmental monitoring, and ISO 14001 management systems); and Renewables Services (wind energy planning through decommissioning and repowering, including ECoW and HSO roles on construction sites). OES has worked on wind energy projects totalling over 2,300 MWh since the late 1990s and holds ISO 9001, ISO 14001, and ISO 45001 certifications via NSAI.

The firm's business model is B2B professional services delivered through direct, relationship-based sales to enterprise clients. Revenue is generated from project-based engagements spanning planning, construction-phase supervision, licensing, and decommissioning; pricing is quote-based and not publicly disclosed. OES serves multiple verticals (industrial and manufacturing, renewable energy, construction, pharmaceutical, and food and beverage) with named enterprise clients including Kerry Group, Glanbia, Aldi, Johnson & Johnson, Astellas, Enercon, Mainstream Renewable Partners, and NTR. The company markets primarily through its website (oes.ie), its LinkedIn page, and industry association memberships (notably the Irish Wind Energy Association).

OES differentiates through established regulatory relationships with Local Authorities, National Parks and Wildlife Services, and Inland Fisheries Ireland, combined with multi-decade domain experience in wind farm development and construction safety management. With 11-50 employees and no disclosed funding or external investment, the firm appears to be founder- or management-owned and operates as a privately held, independently financed consultancy.

Name

OES Consulting

Legal name

OES Consulting

Website

https://oes.ie

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

11–50 employees

Short description

OES Consulting is an independent Irish consultancy founded in 1999, delivering Safety, Sustainability, and Renewables advisory services to enterprise clients across renewable energy, pharmaceutical, manufacturing, food and beverage, and retail sectors in Ireland and the UK.

Ownership category

akta.pro rank

Product category

Environmental and Safety Consulting Services

NAICS

Environmental Consulting Services (54162), Management Consulting Services (54161)

SIC

Services-Management Consulting Services (8742), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

EHS Management Systems & ISO Consulting (ISO 14001/45001) (BPAHAJAF)

akta.pro secondary industries

EHS Auditing, Inspections & Assurance (BPAHAJAG), Risk, Compliance & Internal Controls Consulting (BPAHACAJ), Reliability, Safety & Risk Engineering (RAMS/PSM) Consulting (BPAHAIAK)

Keywords

• Environmental consulting services
• Health and safety consulting
• Renewable energy consulting
• Sustainability advisory services
• Wind farm project management

Headquarters

HQ city

Dublin

HQ country

Ireland

HQ region

Europe

Offices2 records

Markets served

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Professional Consulting Services: OES generates revenue through professional consulting engagements providing sustainability, renewables, health & safety, and project management services to clients in Ireland and the UK. Services span across planning and environmental assessments, construction safety management, environmental monitoring, and licensing compliance across diverse industrial sectors.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

OES Consulting provides professional consultancy services spanning three integrated practice areas: Safety Services (risk management, construction safety management PSDP/PSCS, occupational hygiene, and safety management systems to ISO 45001), Sustainability Services (planning, Appropriate Assessment, Environmental Impact Assessment, IPC/IED licensing and compliance, environmental monitoring, and EMS implementation to ISO 14001), and Renewables Services (wind farm planning, AA/EIA, Environmental Clerk of Works, HSO, PSCS/Principal Contractor services, and decommissioning/repowering support). Services are delivered by professional consultants to enterprise clients in Ireland and the UK across project lifecycles from initial concept through construction, operation, and decommissioning.

Product overview

OES Consulting offers a portfolio of three interconnected consultancy services: Safety Services, Sustainability Services, and Renewables Services. Safety Services provides risk management, construction safety management, and occupational hygiene expertise. Sustainability Services covers environmental impact assessment, licensing, and monitoring across project lifecycles. Renewables Services specializes in wind farm development with environmental and construction phase support. The three service areas complement each other, enabling OES to support clients from initial project concept through construction, operation, and decommissioning.

Differentiator

Problem solved

Functional benefit

Products and services

• Safety Services Health and safety consultancy covering risk management, safety management systems to ISO 45001, construction safety management (PSDP/PSCS roles), occupational hygiene (COSHH, noise, vibration assessments), and safety training programs. Delivered to enterprise clients in construction, manufacturing, and industrial sectors across Ireland and the UK.
• Sustainability Services Environmental consultancy covering planning and Appropriate Assessment (AA), Environmental Impact Assessment (EIA), construction environmental management, IPC and IED licensing and compliance, environmental monitoring and reporting, and Environmental Management Systems (EMS) implementation and auditing to ISO 14001. Supports enterprise clients across food & drink, pharmaceutical, manufacturing, and chemical sectors throughout project lifecycles.
• Renewables Services Wind energy sector consultancy including planning, AA and EIA, environmental clerk of works (ECoW), health and safety officer services, construction supervision, and decommissioning and repowering support. OES has worked on wind energy projects totalling over 2,300 MWh since the late 1990s and is a member of the Irish Wind Energy Association.

Quantifiable outcome

• Over 2,300 MWh of wind energy projects completed

Named customers8 records

Segments5 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Irish Wind Energy Association (IWEA)coreStrategic or Co-development PartnerOES is a member of the Irish Wind Energy Association (IWEA). This membership provides industry networking, knowledge sharing, and credibility in the wind energy sector. OES has been involved in the Wind Energy sector since the late 1990s and leverages this membership for industry visibility and professional development.

Scale indicators2 records

Recent moves1 record

Expansion highlights3 records

Broad incumbents

• WSP: Global professional services firm with a substantial Irish environmental and renewables advisory practice, competing with OES for large infrastructure and wind farm mandates.
• AECOM: Global infrastructure consultancy with significant environmental planning, EIA, and renewables capabilities in Ireland/UK, competing for the same public and private sector tenders.
• SLR Consulting: Global environmental and sustainability consultancy with established Irish operations covering EIA, EMS, occupational hygiene, and renewables — directly overlapping with OES's service portfolio.
• Arcadis: Global design, engineering, and EHS consultancy with UK/Ireland operations spanning environmental impact assessment, sustainability advisory, and renewables consulting — competing on enterprise-scale engagements.
• RPS Group: Ireland-origin global consulting firm (now part of Tetra Tech) with large-scale environmental, planning, and renewables advisory practices — a much larger incumbent competing for the same enterprise mandates.
• ERM (Environmental Resources Management): Global pure-play environmental, health, and safety consultancy with deep Irish/UK presence serving multinationals on sustainability, EHS compliance, and renewables — a scaled incumbent in OES's core categories.

Direct peers

• TOBIN Consulting Engineers: Multi-disciplinary Irish engineering and environmental consultancy serving similar industrial, renewables, and infrastructure clients in Ireland with overlapping EIA and project management capabilities.
• McCarthy Keville O'Connell: Irish planning, environmental, and EIA consultancy operating in the same Irish market with overlapping renewables, EIA, and planning advisory services — directly comparable in scale and customer base to OES.
• Nicholas O'Dwyer: Irish engineering and environmental consultancy with strong public-sector relationships delivering water, environmental, and infrastructure advisory services across Ireland and the UK — comparable in scale and customer base.
• Fehily Timoney & Company: Irish environmental and engineering consultancy providing EIA, waste licensing, and environmental monitoring services to similar Irish enterprise clients — a close functional peer in the same niche.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/oes-consulting/about

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OES Consulting