Structural Engineering
With a portfolio extending to over 3,000MW of power, Jennings O’Donovan is a recognised market leader in Wind Energy development.
We also act as technical advisors to Lending and Banking institutions operating in the renewable energy sector and have significant experience in cost estimation, conciliation and dispute resolutio
Our portfolio when completed will extend to an investment of €3 billion in the Wind Energy Sector. From project inception through planning, design, procurement, construction and commissioning, we offer engineering, environmental and business expertise for renewable energy projects in wind and in solar.

Projects

Ballyragget Battery Energy Storage System (BESS)
A 3.11 ha battery energy storage system in Co. Kilkenny, with JOD delivering planning, environmental assessment, CEMP, civil design reporting and full project coordination for ART Generation.
- Undisclosed
- 29. Unit BESS
- County Kilkenny, Ireland

Richfield Solar Farm
A 21 MWp solar development in County Wexford, where JOD delivered full planning, environmental assessment, HDD methodology, CEMP preparation and project management for SSE Renewables.
- Undisclosed
- 21 MWp
- County Wexford, Ireland

Rathrush Solar Farm
A 63 MW solar PV development in County Carlow, with JOD leading planning, environmental assessment, survey coordination and full project management for Ørsted.
- Undisclosed
- 63 MW
- Co. Carlow, Ireland

Firlough Wind Farm & Hydrogen Plant, Co. Mayo / Co. Sligo
A major renewable energy development comprising a 13‑turbine wind farm and a green hydrogen plant across Mayo and Sligo, with JOD leading the full SID planning process, EIAR preparation, design coordination and stakeholder engagement.
- Undisclosed
- 13 Turbines + Hydrogen Production Facility
- County Mayo, Ireland

Kilmacrennan & Carrigart Wastewater Schemes
Delivery of new 1,000 PE and 700 PE wastewater treatment plants in Kilmacrennan and Carrigart to protect the River Lurgy and enable regional growth.
- Undisclosed
- 1,700 PE (Combined)
- Donegal, Ireland

Rathmullan, Milford & Ramelton Wastewater Scheme
A centralized wastewater solution for Rathmullan, Milford, and Ramelton, featuring a new 5,500 PE WwTP and 18km of network upgrades to protect the Lough Swilly environment.
- Undisclosed
- 5,500 PE
- County Donegal, Ireland

Tullamore and Birr Water Treatment Plant Upgrades
A multi-site upgrade of the Ardan, Clonaslee, and Birr Water Treatment Plants, delivering over 10,000m³/d of high-quality drinking water to 23,500 consumers.
- Undisclosed
- 10,850m³/d (Combined)
- Offaly & Laois, Ireland

Lettermacaward Water Treatment Plant Upgrade
A comprehensive 2,800m³/d upgrade of the Lettermacaward Water Treatment Plant featuring a new 1.5m dam raising at Derkmore Lough and advanced DAF/RGF treatment facilities.
- Undisclosed
- 2,800m³/d
- Donegal, Ireland

Killybegs and Lettermacaward Regional Water Supply Schemes Project
A major regional infrastructure project involving the upgrade of two Water Treatment Plants, the construction of a new gravity dam, and 26km of pipeline to ensure ECDWR-compliant drinking water for West Donegal.
- €15m+
- 14,650m³/day
- Donegal, Ireland

Arklow Bank Wind Park Phase 2
Jennings O’Donovan provided comprehensive PSDP services for the 800 MW Arklow Bank Wind Park Phase 2, managing safety and design coordination for both offshore turbine infrastructure and onshore grid connections.
- Undisclosed
- 800 MW
- Wicklow, Ireland