Overview
Great Island is a 216 MW oil-fired diesel power plant in Ireland, operated by Endesa. It plays a role in the country's power generation mix, providing dispatchable capacity.
Great Island is an operational diesel power plant located in County Wexford, Ireland, with a capacity of 216 megawatts. Owned by Endesa, the facility uses oil as its primary fuel and contributes to Ireland's electricity supply, particularly during periods of high demand or when renewable sources are less available. The plant operates under Irish and EU environmental regulations, including the Industrial Emissions Directive (2010/75/EU) and Best Available Techniques (BAT) conclusions for large combustion plants. As an oil-fired facility, it has higher CO2 and pollutant emissions per MWh compared to gas or renewables, but it provides essential grid stability and backup power. The technology is likely based on internal combustion engines or steam turbines, typical for diesel plants of this scale. Great Island's location near the coast facilitates fuel delivery and cooling water access. The plant supports Ireland's energy security by offering flexible generation, though its environmental footprint is significant relative to cleaner alternatives. Its role is expected to evolve as Ireland transitions to a low-carbon energy system under its Climate Action Plan.
Environmental context
As an oil-fired power plant, Great Island emits CO2, SOx, NOx, and particulate matter, contributing to local and regional air quality impacts. Its location in a rural coastal area may affect nearby ecosystems, though specific protected areas are not confirmed. The plant's age and technology (likely subcritical or medium-speed diesel) influence its efficiency and emission rates. Ireland's power sector is increasingly focused on reducing fossil fuel reliance, with targets for 80% renewable electricity by 2030, placing pressure on plants like Great Island to decarbonize or face reduced operation.
Frequently asked questions
Great Island power plant is located in County Wexford, Ireland, near the coast. Its coordinates are 52.2793° N, -6.9935° W.
Great Island uses oil as its primary fuel. It is classified as a diesel power plant, which typically uses heavy fuel oil or diesel in internal combustion engines or steam turbines.
Great Island has a capacity of 216 megawatts (MW), which is enough to supply tens of thousands of homes. It operates as a dispatchable plant, meaning it can be called upon when needed.
Great Island operates under the EU Industrial Emissions Directive (2010/75/EU) and must comply with Best Available Techniques (BAT) conclusions for large combustion plants. It also adheres to Irish national emission standards and the EU Emissions Trading System for CO2.
Great Island is owned by Endesa, a Spanish multinational electric utility company. The plant is part of Endesa's international generation portfolio.