Common methodology to assess cost of hydroelectric flexible technologies

Abstract

The financial assessment is critical to make sure these technologies are economically viable. This document presents the methodology which will be used for the first step of this assessment: costing of the technologies.The methodology described in this document generally follows the principles of activity-based costing.Technologies are separated into two groups for CAPEX costing:  a top-down approach for variable speed upgrades, and a bottom-up approach for other solutions. OPEX costing: bottom-up approach for all technologies.This document also presents a standardised work breakdown structure of hydropower plants which brings a common language to describe activities in the rest of task.Finally, this document outlines the most impacted parts of the hydropower plant by each of XFLEXHYDRO solutions; both in terms of CAPEX and OPEX.

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