In a successful tender bid ESS Ecology was commissioned to undertake a large scale pre-construction electro-fishing survey for a wind farm development in Ross-shire that was awarded consent. Amongst a number of pre-construction planning conditions, an electro-fishing survey was required on several watercourses within the study area. The survey aimed to establish baseline data on fish populations, which will inform the mitigation strategy and specific mitigation measures to be implemented prior to construction. Following extensive consultation and agreement with the Cromarty Firth Fishery Board over methods, the electrofishing survey was undertaken in August 2009, an optimal time of the year for electro-fishing surveys. ESS Ecology recommends for this type of work to be commissioned between early June and September as it avoids the spawning season and takes advantage of low flow periods. At a meeting held with the Director of the Fishery Board and the project developer Infinergy, ESS Ecology’s Director presented the survey results and suitable mitigation measures were agreed. These were subsequently implemented and the wind farm became operational in 2014.