The December 2017 edition of World Energy Focus discusses the evolving energy landscape, highlighting three main trends: the transition to e-mobility, decreasing costs of renewable energy particularly solar, and the rise of digital startups transforming energy transactions. The document also emphasizes the potential of blockchain technology to disrupt the sector but acknowledges existing challenges such as regulatory hurdles and technological uncertainties. Additionally, it notes significant global energy trends, including China's leadership in clean energy and the United States' rise as a major oil and gas producer.