Opponents of a Microsoft data centre development voiced their concerns at a demonstration in the city centre.
The technology company continues to face resistance to its plans for the former Skelton Grange power station location in Stourton.
More than 42,000 individuals have appended their signatures to a petition objecting to the scheme, citing worries about resource consumption.
Approximately 250 protesters convened at Millennium Square on Saturday for the event arranged by the group No Leeds Data Centre.
Campaigner Kate Pearson expressed doubt about the necessity of such large-scale facilities that generate environmental damage.
Campaign organiser Lianne Marie Mease raised concerns regarding effects on local wildlife during construction at the decommissioned power station grounds.
She noted the scale of the Leeds development far exceeds requirements and highlighted that the surrounding area has undergone natural regeneration over three decades, meaning the clearance would affect species considered rare or vulnerable within the city.
Microsoft has stated the complex, which received planning consent in April, would provide power infrastructure for digital services supporting communities, businesses and public sector organisations.
The company indicated the proposed facility would utilise air cooling for the majority of the year, all energy consumption would be matched with renewable sources, and Microsoft maintains its commitment to achieving carbon negative status, water positivity and zero waste output by 2030.
Leeds City Council previously indicated the planning approval aligned with national legislation and policy frameworks.
The Microsoft proposal comprises three data centre structures accommodating computer servers, alongside a storage facility extending to approximately 161,000 square feet of floor space.
A public consultation took place regarding the development, which encompasses the installation of electrical connections, cooling towers and emergency generator systems.