Landmark Ruling on Noise Nuisance Redefines Damage Assessment

In a notable decision delivered on 5 June 2025, the Irish High Court ruled in the case of Byrne & Moorhead v ABO Energy Limited & Others, addressing the issue of private nuisance and the appropriate remedies for amenity interference. This ruling sets a potential precedent for English courts as it deviates from traditional methods of assessing damages for such nuisances in England and Wales. The court’s judgment challenges the norms established by recent UK Supreme Court cases, particularly in its approach to damages related to loss of amenity.

The case centred on allegations against the Gibbet Hill wind farm, where the claimants argued that noise from the turbines significantly disrupted their daily enjoyment and use of their home and garden. During the trial, the defendants acknowledged their liability and took steps to mitigate the problem by ceasing turbine operations between 10 pm and 7 am. Subsequently, they proposed further limitations on the turbine activity during weekends and public holidays, alongside offering compensation for past and future nuisance. However, the defendants emphasised the role of their turbines in fulfilling Ireland’s renewable energy targets.

The Irish High Court’s approach to assessing damages marked a departure from the English and Welsh courts’ method, which follows the Hunter v Canary Wharf case. Traditionally, damages in these cases are calculated based on the property’s value, divided among occupants, treating them as property cases with a singular cause of action. The defendants urged the court to adopt this method, suggesting damages should reflect notional capital loss to the plaintiffs’ home value.

Rejecting this proposition, the Court argued that linking damages to the home’s capital value placed undue emphasis on property worth, rather than the true impact on the individuals’ use and enjoyment of their home. The Court instead opted for an evaluation based on the nuisance’s effect on an objectively reasonable person in the claimants’ situation. This approach aims to provide a fairer assessment of the nuisance’s impact, considering its duration and severity.

In its legal analysis, the Court criticised the traditional English method for its potential to result in inconsistent compensation that inadequately reflects the constitutional rights safeguarded by nuisance law. By basing awards on a home’s value, similar nuisances could lead to vastly different compensations depending on the property’s market value, undermining fairness in the process.

The defendants also sought to secure a future right to perpetuate the nuisance by offering compensation. However, the Court found no basis for permitting such a licence, as it contradicted the principles of nuisance law and lacked credible mitigation evidence. The judgment emphasised that ongoing nuisance cannot be legitimised through financial compensation, especially without robust evidence of remedial action.

Acknowledging the defendants’ contributions to Ireland’s renewable energy agenda, the Court nevertheless noted the absence of sufficient evidence in witness statements or expert reports to propose an effective solution for noise reduction. The defendants’ failure to suggest meaningful mitigation measures led the Court to conclude that allowing the nuisance to persist was unwarranted.

Consequently, the Court issued an injunction ordering a complete shutdown of the turbines, criticising the defendants’ approach as exacerbating the claimants’ distress and awarding aggravated damages of €24,000 and €36,000 to the claimants. Despite engaging Articles 40.3 and 40.5 of the convention, the Court determined that the injunction and aggravated damages provided adequate redress, thus denying exemplary damages.

This ruling signifies a significant shift from the English legal framework on private nuisance and amenity damages. Moving away from capital value assessments, the Court introduced an annualised, plaintiff-focused compensation system that acknowledges individual experiences rather than property valuation. This innovative methodology establishes a new benchmark for damages, potentially influencing future English court rulings on nuisance cases.

On the matter of the defendants’ conduct, the judgment underscored the risks of ignoring complaints, reaffirming that parties who fail to engage promptly and transparently may face comprehensive prohibitions on their activities. The ruling highlighted the importance of early and open dialogue between parties in such disputes. Should a defendant prefer damages over an injunction, timely engagement and evidence of mitigation efforts are crucial. The Court’s decision reinforces that developers cannot simply purchase a licence to harm neighbours and must demonstrate a commitment to mitigating adverse impacts.