Prior to installation and operation, the prefeasibility study of a tidal energy system is customarily carried out. The prefeasibility analysis includes the study of climatic conditions, longitude, latitude, a study of the coastal area, low and high tide and tidal current of the proposed site, and availability of tidal energy sources and assessment of its potential load and load demand of the application site. The prefeasibility study assists in finding the best location to develop a tidal energy system for a particular demand. This chapter includes a resource-assessment model in terms of one-dimensional, two-dimensional, and three-dimensional resource assessments. Resource assessments are also categorized in terms of theoretical, technical, practical, accessible, and viable tidal current energy resources. Further resource assessment is done by regression-based mathematical analysis and analyzed with software that is related to the tidal energy resource assessment. The project duration is analyzed with the help of two project management techniques, the critical path method (CPM) and the program evaluation and review technique (PERT). In the next part of this chapter, static and field surveys are done in terms of quantitative observation and also the challenges of measuring water current in coastal areas. Location assessment is also analyzed by the farm as well as flux methods by dynamic programming and by transmission line analogy. Finally, this chapter explains detailed project report preparation and appraisal related to tidal power plant installation.