Балтов, Милен2025-04-232015978-619-7126-10-5http://research.bfu.bg:4000/handle/123456789/2237Megaprojects are extremely large-scale investment projects typically costing more than € 0,5 Billion. They include power plant (conventional, nuclear or renewable), oil and gas extraction and processing projects, transport projects and even cultural events such as the Olympics Games. Megaprojects are complex because they have long projects and product life-cycles, they are also unpredictable in term of time and scope, moreover they have substantial irreversible commitments, high probabilities of failure and skewed reward structure. It is their scale and their extreme complexity in both technical and in human terms, due to the huge involvement and the number of regional, national and international partners, that distinguishes megaprojects from traditional projects.bgFinancing megaprojectsMegaprojects in energyRoles in megaprojectsComplexity of projectArticle