This paper outlines a detailed evaluation of intangible assets within the company, now more and more important and fundamental. It focuses on these resources through the use of direct valuation methods (scored card, Tobin's Q ratio, VAIC, interbrand, technology brokers), historical cost,...

The present work has the task of developing an analysis of the main methods of estimating WTP, Willingness To Pay, for the evaluation of projects related to renewable energy, such as open-ended method, choices dichotomous, auctions, payment cards with a range of prices