In a security of energy supply perspective, nuclear energy seems thus well-positioned to reduce import dependency and to stabilise cost as well as to contribute to the diversification of electricity generation technologies in a manner that overall improves the security of energy supply. The following chapter will explore the extent to which the preceding considerations can be quantified in the context of appropriate security of supply indicators. London, United Kingdom, www.bp.com/liveassets/bp_intemet/globalbp/globalbp_uk_english.