In recent years, a combination of erosion or removal of subsidies, lower auction prices, reduced integrated benefits and volatility of the electricity market has led to a lack of long-term sales security and forced producers and developers to explore new models for their projects. At the same time, companies are increasingly striving to reduce their energy costs while sharply reducing their environmental footprint while continuing to operate. The very high RE100 campaign, a global business management initiative that brings together influential companies that are committed to supplying 100% renewable electricity, has led some of the world`s largest companies to dedicate themselves to it.  In December 2019, the RE100 passed the milestone of 200 members. As grant-free renewable energy projects become a reality (and probably the norm), it is likely that PPACs will continue to play an increasingly important role in supporting projects in financing and achieving long-term objectives of supply, energy costs and decarbonisation of businesses. Ultimately, the price must be correct so that they continue to be seen as a preferred route to the project market and a long-term solution for the supply of electricity to businesses, but given the rapid increase in their use in recent years, they seem to point the way forward in the near future.  Acciona Energy, “Corporate PPA Powering your company with clean energy,” April 2019, available at: mediacdn.acciona-energia.com/media/25688560/foll_energia_ppa_2019_eng-1-4.pdf, accessed January 15, 2020.