•Design and calculation of solar trackers and fixed steel structures for PV plants.•Analysis of the technical feasibility of the project (wind, snow, sismo loads, orographics conditions...) according to the local standard: ASCE, NBR, NSR-10, NCH...•Slope analysis and earthworks estimationTechnical analysis of PV plants projects at quotation stage.•Study of site conditions and PV structures layouts.•Earthworks analysis and optimization of cut/filling volumes.•Effective communication and support to clients to ensure that TrinaTracker's products meet all their technical requirements.