Donegal County Council has granted planning permission for an additional 135-metre wind turbine at the already-permitted Lettergull windfarm near Raphoe and St Johnston, a decision that matters to developers nationally given persistent planning bottlenecks widely cited as the biggest obstacle to Ireland meeting its onshore wind targets. The approved turbine has a 115-metre rotor diameter and 77.5-metre hub height, alongside associated underground cabling, site entrances and access roads, within a site originally permitted in 2020 for six turbines with blade tip heights of up to 135 metres and a 30-year operational life.

Lettergull Windfarm Ltd is an associated company of Regen Power Ltd, which is in turn backed by Impax Asset Management, a London-headquartered asset manager with more than $50 billion in assets under management and advice across sustainability-focused strategies, including new energy infrastructure.

The council attached 20 conditions, including a €129,000 contribution toward local public infrastructure and a €30,000 security bond against potential road and bridge damage during construction, along with requirements for annual bird surveys and pre-construction ecological checks.

MKO Planning and Environmental Consultants prepared the environmental planning report submitted in support of the application.

The approval extends an existing consented site rather than opening a contested new one, a distinction that matters given how slowly Ireland's planning system is processing fresh onshore wind applications. Ireland's Climate Action Plan targets 9,000 MW of onshore wind capacity by 2030, up from just over 5,000 MW currently installed, requiring a pace of approvals well above recent annual additions of 150 to 250 MW.

Extensions to already-permitted sites offer developers and their financial backers a comparatively faster route to additional capacity than greenfield applications, since the principle of wind development on the land is already established. That makes this approval a useful signal for investors assessing where near-term onshore capacity is most likely to clear planning.

The council's planning report explicitly linked the decision to national policy, noting the "urgent need for renewable energy development of this scale" alongside decarbonisation and energy security objectives, reinforcing that local authorities are weighing national climate targets directly into individual site decisions.

Source: Donegal Live / enable-research.ie