[en] Economic growth is increasing the threat of climate change. It is triggering growth in global energy demand, which increased by 2.1% in 2017, (compared with 0.9% the previous year). This has made it difficult for countries to achieve the Paris 2015 Climate Accord objective to keep the global temperature rise below 2 degrees Celsius in 2050. It is now unclear how governments will be able to announce increased ambitions in line with the goal of holding global warming at 1.5 degrees Celsius in 2050. World Energy Markets Observatory (WEMO) is Capgemini's annual thought leadership and research report that includes useful insights and trends that every energy and utility player should know about as they plan for the future of their business. This 20. edition is drafted mainly from public data combined with Capgemini's expertise in the energy sector. Special expertise on regulation, climate challenges, and customer behavior has been provided by research teams at De Pardieu Brocas Maffei and VaasaETT. The current edition monitors the main indicators of the electricity and gas markets in Europe, North America, Australia, and South-east Asia and reports on developments and transformations in these sectors and addresses six main topics that include: Climate change and regulatory policies, Energy transition, Infrastructure and adequacy of supply, Supply and final customer, Transformation, Financials, Key Findings. Oil prices rose as high as US$80/barrel for the first time since 2014; this represents an increase of nearly 100% since January 2016. Global natural gas demand grew by 3%, thanks in large part to abundant and relatively low-cost supplies. China alone accounted for almost 30% of growth globally. Gas prices rose in Europe, Asia and North America in 2017, but remained below the 10-year average. Despite being the major commodity least loved by analysts, global coal demand rose about 1% in 2017, reversing the trend seen over the last two years. This growth was mainly due to demand in Asia, almost entirely driven by an increase in coal-fired electricity generation. Digital adoption has huge potential to decrease costs in the industry and service sector - among others, IoT and Blockchain witnessed progressive adoption. Grids are strongly impacted by the increased share of intermittent renewables and grid operators will strongly benefit from digitization. However, cyber security still remains a big concern, but this will not prevent utilities from deploying their digital transformation plans.