Recent years have seen renewed and growing interest in carbon taxes that put a price on greenhouse gas (GHG) emissions. This resurgence in interest has come as over three-quarters of the world have developed Nationally Determined Contributions under the Paris Agreement and are looking for cost-effective ways to achieve these emission reduction goals. It has also developed alongside a gradual shift toward taxes on goods and services, with many jurisdictions seeking to use the tax system to achieve greater economic efficiency and to pursue a range of policy goals beyond raising revenue.

Global energy-related carbon dioxide (CO2) emissions can be reduced by 70% by 2050 and completely phased-out by 2060 with a net positive economic outlook, according to new findings released today by the International Renewable Energy Agency (IRENA). Perspectives for the Energy Transition: Investment Needs for a Low-Carbon Energy Transition, launched on the occasion of the Berlin Energy Transition Dialogue, presents the case that increased deployment of renewable energy and energy efficiency in G20 countries and globally can achieve the emissions reductions needed to keep global temperature rise to no more than two-degrees Celsius, avoiding the most severe impacts of climate change.
“The Paris Agreement reflected an unprecedented international determination to act on climate. The focus must be on the decarbonision of the global energy system as it accounts for almost two-thirds of greenhouse gas emissions,” said IRENA Director-General Adnan Z. Amin. “Critically, the economic case for the energy transition has never been stronger. Today around the world, new renewable power plants are being built that will generate electricity for less cost than fossil-fuel power plants. And through 2050, the decarbonisation can fuel sustainable economic growth and create more new jobs in renewables.
“We are in a good position to transform the global energy system but success will depend on urgent action, as delays will raise the costs of decarbonisation,” added Mr. Amin.
Decarbonisation of global energy system, led by renewables and efficiency, would create economic gains. Photo Credits: Allan F. Castañeda
While overall the energy investment needed for decarbonising the energy sector is substantial – an additional USD 29 trillion until 2050 – it amounts to a small share (0.4%) of global GDP. Furthermore, IRENA’s macroeconomic analysis suggests that such investment creates a stimulus that, together with other pro-growth policies, will:
- boost global GDP by 0.8% in 2050;
- generate new jobs in the renewable energy sector that would more than offset job losses in the fossil fuel industry, with further jobs being created by energy efficiency activities, and;
- improve human welfare through important additional environmental and health benefits thanks to reduced air pollution.
Globally, 32 gigatonnes (Gt) of energy-related CO2 were emitted in 2015. The report states that emissions will need to fall continuously to 9.5 Gt by 2050 to limit warming to no more than two degrees above pre-industrial temperatures. 90% of this energy CO2 emission reduction can be achieved through expanding renewable energy deployment and improving energy efficiency.
Renewable energy now accounts for 24% of global power generation and 16% of primary energy supply. To achieve decarbonisation, the report states that, by 2050, renewables should be 80% of power generation and 65% of total primary energy supply.
The report also describes how the energy sector transition needs to go beyond the power sector into all end-use sectors. Renewables need to account for the majority of power generation in 2050, based on continued rapid growth especially for solar and wind power in combination with enabling grids and new operating practices. But also, the buildings, industry and transport sectors need more bioenergy, solar heating and electricity from renewable sources that substitute conventional energy. Electric vehicles need to become the predominant car type in 2050. Liquid biofuel production must grow ten-fold. High efficiency all-electric buildings should become the norm. Deployment of heat pumps must accelerate and a combined total of 2 billion buildings will need to be new built or renovated.
The report calls for policy efforts to create an enabling framework and re-design of energy markets. Stronger price signals and carbon pricing can help provide a level playing field when complemented by other measures, and the report emphasizes the importance of considering needs of those without energy access.
The full report can be downloaded here.
Banner photo credits to Mohamed Abdulwahab/Voices4Climate

The year 2016 made history, with a record global temperature, exceptionally low sea ice, and unabated sea level rise and ocean heat, according to the World Meteorological Organization (WMO). Extreme weather and climate conditions have continued into 2017.
WMO issued its annual statement on the State of the Global Climate ahead of World Meteorological Day on 23 March. It is based on multiple international datasets maintained independently by global climate analysis centres and information submitted by dozens of WMO Members National Meteorological and Hydrological Services and Research Institutes and is an authoritative source of reference. Because the social and economic impacts of climate change have become so important, WMO partnered with other United Nations organizations for the first time this year to include information on these impacts.
“This report confirms that the year 2016 was the warmest on record – a remarkable 1.1 °C above the pre-industrial period, which is 0.06 °C above the previous record set in 2015. This increase in global temperature is consistent with other changes occurring in the climate system,” said WMO Secretary-General Petteri Taalas.
“Globally averaged sea surface temperatures were also the warmest on record, global sea levels continued to rise, and Arctic sea-ice extent was well below average for most of the year,” he said.
“With levels of carbon dioxide in the atmosphere consistently breaking new records, the influence of human activities on the climate system has become more and more evident,” said Mr Taalas.
The increased power of computing tools and the availability of long term climate data have made it possible today, through attribution studies, to demonstrate clearly the existence of links between man-made climate change and many cases of high impact extreme events in particular heatwaves, he said
Each of the 16 years since 2001 has been at least 0.4 °C above the long-term average for the 1961-1990 base period, used by WMO as a reference for climate change monitoring. Global temperatures continue to be consistent with a warming trend of 0.1 °C to 0.2 °C per decade, according to the WMO report.
“Globally averaged sea surface temperatures were also the warmest on record, global sea levels continued to rise, and Arctic sea-ice extent was well below average for most of the year,” said WMO Secretary-General Petteri Taalas. Photo Credits: Paula Alves Silva/Connect4Climate
The powerful 2015/2016 El Niño event boosted warming in 2016, on top of long-term climate change caused by greenhouse gas emissions. Temperatures in strong El Niño years, such as 1973, 1983 and 1998, are typically 0.1 °C to 0.2 °C warmer than background levels, and 2016’s temperatures are consistent with that pattern.
Global sea levels rose very strongly during the El Niño event, with the early 2016 values reaching new record highs. Global sea ice extent dropped more than 4 million square kilometres below average in November, an unprecedented anomaly for that month.
The very warm ocean temperatures contributed to significant coral bleaching and mortality was reported in many tropical waters, with important impacts on marine food chains, ecosystems and fisheries.
Coral Reef in Indonesia. Photo: Carl Gustav/World Bank
Carbon dioxide levels in the atmosphere reached the symbolic benchmark of 400 parts per millions in 2015 – the latest year for which WMO global figures are available – and will not fall below that level for many generations to come because of the long-lasting nature of CO2.
Noteworthy extreme events in 2016 included severe droughts that brought food insecurity to millions in southern and eastern Africa and Central America. Hurricane Matthew caused widespread suffering in Haiti as the first category 4 storm to make landfall since 1963, and inflicted significant economic losses in the United States of America, while heavy rains and floods affected eastern and southern Asia.
WMO has issued annual climate reports for more than 20 years and submits them to the Conference of the Parties of the Framework Convention on Climate Change. The annual statements complement the assessments reports that the Intergovernmental Panel on Climate Change (IPCC) produces every six to seven years.
It will be presented to UN member states and climate experts at a high-level action event on Climate Change and the Sustainable Development Agenda in New York on 23 March (World Meteorological Day) hosted by the President of the UN General Assembly Peter Thomson.
“The entry into force of the Paris Agreement under the UN Framework Convention on Climate Change (UNFCCC) on 4 November 2016 represents a historic landmark. It is vital that its implementation becomes a reality and that the Agreement guides the global community in addressing climate change by curbing greenhouse gases, fostering climate resilience and mainstreaming climate adaptation into national development policies,” said Mr Taalas.
“Continued investment in climate research and observations is vital if our scientific knowledge is to keep pace with the rapid rate of climate change,” said Mr Taalas.

The World Bank Group is back again with its Massive Open Online Course (MOOC) on climate change - ‘From Climate Science to Action’, starting from May 8th, 2017.
The new course presents the most recent scientific evidence on climate change. It explores different strategies for low emission and climate resilient development and provides an overview to the Paris Agreement ratification with some reflections on COP22 outcomes. Through interactive video talks, complimented with curated readings, resources, and quizzes, renowned scientists and policy makers from the field will lead you through the course. An active discussion forum on the course would further enhance learning where participants get to exchange knowledge with peers from across the globe. As the course concludes, you will be invited to reflect on what you can do at the national, local, community, and individual level to limit global warming below 2°C and adapt the impacts already occurring.
This MOOC on climate change is taught by:
Alan S. Miller, Principal Climate Change Specialist, World Bank Group
Claudia Barrera, Senior Carbon Finance Specialist, World Bank Group
Get the latest information on climate change and find out what you can do about it. Spread the word through #learnclimate
The report entitled “Private Sector Participation of Solid Waste Management Activities in Ibadan” provides Oyo State Government with recommendations to improve the technical, legal and institutional environment for the immediate, medium and the long term interventions in solid waste management. The outlined policy recommendations detailed in the full report aims to guide the Oyo State Government in identifying areas within the solid waste management sector that would improve efficiency from private sector participation.

In the year 2017, CMS VATAVARAN will be celebrating its 9th edition of the competitive International Film Festival and Forum in New Delhi from November 2-6, 2017.

The 9th competitive CMS VATAVARAN - Asia’s largest Environment and Wildlife Film Festival is scheduled for November 2-6, 2017 in New Delhi, India.
The theme of this edition is “Conservation4Water” with the purpose to invite films and create forums on the inter-connectedness of climate change and water, water struggles in a world dealing with global warming, climate variability, food and health insecurity, biodiversity loss, and environmental damage. The festival and forum will comprise of various programmes with eminent organisations including government, civil societies, corporate, media, institutes, and schools.
Films produced on or after January 01, 2015 are accepted in 13 categories for 21 awards in both national and international sections. All nominated and awarded films will get an added benefit of having their films screened in different parts of India in the travelling editions of CMS VATAVARAN, besides occasions of special screenings in important national and international environmental forums.
Entry guidelines are available on CMS VATAVARAN'S website and the deadline for submitting a film entry is March 22, 2017
This report, commissioned by IFC and ESMAP and authored by Navigant Research, outlines the principal uses, drivers, and challenges regarding the commercialization of energy storage technologies in low- and middle-income countries.
By combining supply-side industry analysis, end-user primary research and demand assessment the report provides a forecast of expected deployments by region and potential impacts on energy access, quality of electricity supply, and other key areas.