Renewable energy triggers sharply polarized views. For some, it is a costly white elephant; for others, it is humanity’s savior, promising to emancipate us (and our environment) from the “folly” of fossil fuels. So a hardheaded, credible and, above all, impartial analysis, which would provide a much-needed dose of pragmatism and realism to the debate, is long overdue.
The new report by the UN Intergovernmental Panel on Climate Change (IPCC), involving more than 120 scientists, economists and technology specialists, provides that long-overdue assessment. It adopts a global perspective and reconciles developed and developing countries’ interests, while weighing the broader economic, environmental and social issues at stake.
The summary, signed by representatives of the more than 190 countries meeting this week in the United Arab Emirates, concludes that renewable energy is an increasingly practical and highly promising option. Costs are falling — and are likely to fall even further as innovation accelerates and global demand for energy continues to rise.
The researchers have painstakingly sifted through more than 160 scenarios, including in-depth examinations of four. The most optimistic of these predicts that renewables could account for almost 80 percent of total energy supply by mid-century, thereby cutting greenhouse-gas emissions by about one-third.
Of course, only time will tell whether or not this figure can be reached. Some of the six renewable-energy technologies evaluated, such as those that generate electricity from the ocean, will require more research, development and incubation before they reach commercial maturity. However, others, such as wind, solar and geothermal are in some circumstances already cost competitive — or nearly cost competitive — with fossil fuels.
The IPCC report also underscores what some development experts and economists have been saying for years: Energy choices should take into account wider benefits. Renewables cut air pollution, which is costing the global economy billions of US dollars a year in health-care costs alone. Photovoltaics can be rapidly deployed in rural areas without the need to instal an expensive grid system — Bangladesh is a pioneering case in point. Moreover, we are only just coming to grips with the cooling costs of thermal power plants in terms of finite water resources — let alone the future price of unchecked climate change.
The ball is now firmly in the politicians’ court. The IPCC assessment points out that renewables are already growing. In 2009, installed capacity of wind and photovoltaics increased by more than 30 percent and 50 percent, respectively. However, the really big numbers are unlikely to be reached without the kinds of supportive public policies that have catalyzed the expansion of renewables in countries such as China and Germany.
Smart and forward-looking national policies are imperative. Kenya’s new feed-in tariff has triggered a rapid expansion of geothermal capacity, and, at 300MW, the largest wind-farm project in sub-Saharan Africa.
However, diverse national policies can achieve only so much. International policies, including the lending decisions of the World Bank and regional development banks, must evolve along with the strategies of the UN and bilateral donors.
The importance of moving forward on a new global climate agreement in Durban, South Africa, this year cannot be underestimated. A comprehensive agreement would bring certainty to the carbon markets and strengthen the various mechanisms that are already encouraging renewables in developing economies and pump-priming private-sector investments. The Rio Plus 20 meeting in Brazil next year is another opportunity to spark the transition to a global green economy.