Hydropower, nuclear power and wind power are the lowest
greenhouse gas emitting energy sources. (Photos: Korean Ulchin
NPP/IAEA;
Doug Young;
Mohammad Afshar; D.E. Shropshire/IAEA)
Lima, Peru — A mix of solar and wind energy, carbon
capture storage technology and nuclear power could provide a viable
solution to countries seeking to decrease their carbon footprint by
lowering the greenhouse gas emissions (GHG) of their energy sector. This
was the message from the IAEA at this year’s annual United Nations (UN)
Climate Change Conference — COP20 — held last week in Lima, Peru.
The aim of the conference was to identify viable climate change
mitigation strategies and pave the way towards a successful global
climate agreement by 2015.
“The global demand for electricity is increasing, but we also need to
reduce GHG emissions. We’re now discussing ways to expand low-carbon
energy portfolios that will help both our environment and our
economies,” said Ferenc Tóth of the IAEA’s Planning and Economic Studies
Section at the UN technical briefing on the Mitigation of
Energy-related GHG Emissions held during the conference.
The session discussed energy-related GHG emissions, included a
keynote by the Chair of the Intergovernmental Panel on Climate Change
(IPCC), and speakers from the IAEA, the United Nations Industrial
Development Organization (UNIDO), the World Trade Organization (WTO) and
the Sustainable Energy for All (SE4ALL) initiative.
Agreeing on how to globally reduce and mitigate GHG emissions has
been a key topic at the conference. The IAEA informed delegates about
the challenges of GHG mitigation, how mitigation goals can be achieved
and the likely consequences of inaction on the environment.
Towards low-carbon energy
Tóth highlighted the double challenge countries face in meeting the
rising demand for energy and at the same time mitigating climate change.
He emphasized that energy planners need to explore several low-carbon
energy sources and technologies. He explained that hydropower, nuclear
power and wind power are the lowest GHG emitting energy sources, and
that the mitigation portfolio recommended by the International Energy
Agency (IEA) includes solar, carbon capture storage, wind and nuclear
technology. These low-carbon technologies have relatively low external
costs and also help to alleviate air pollution, which is mostly caused
by sulphur dioxide (SO2) and nitrogen oxides (NOx) released during the
combustion of fossil fuels.
UNIDO’s Nina Zetsche described climate resilient industries, the use
of energy efficiency in industry, and renewable energy solutions for
industrial processes.
WTO’s Devin McDaniels presented possible strategies to reduce the
carbon footprint of international trade, and Minoru Takada from SE4ALL
described the challenge of providing universal energy access while
reducing GHG emissions. Increased energy efficiency and the use of
renewable energy are necessary to simultaneously achieve both goals.
IPCC Chairperson, Rajendra K. Pachauri, was a keynote speaker at the
session, and he explained the benefits of climate change mitigation for
building a better and more sustainable world. He advocated for timely
action to reach zero carbon emissions before the year 2100.
In 2009, countries agreed under the Copenhagen Accord that an
increase in global mean temperature should not exceed two degrees
Celsius compared to pre-industrial levels, in order to avoid
irreversible damage and interference with global climate systems. The
aim has been to reduce GHG emissions at the lowest possible economic and
environmental cost.
Unfortunately, since 2009, the trend has not changed and global
year-on-year GHG emissions have risen. A major emitter is the energy
sector, as the majority of electricity generation relies on the burning
of fossil fuels — releasing the GHG, carbon dioxide (CO2). Governments
around the world have been looking for ways to reduce CO2 emissions
while maintaining economic growth and development.