Tag Archives: solar energy

Furthest from their Minds: greenhouse gases in Afirca

When sub-Saharan Africa comes up in discussions of climate change, it is almost invariably in the context of adapting to the consequences, such as worsening droughts. That makes sense. The region is responsible for just 7.1% of the world’s greenhouse-gas emissions, despite being home to 14% of its people. Most African countries do not emit much carbon dioxide. Yet there are some notable exceptions.

Start with coal-rich South Africa, which belches out more carbon dioxide than Britain, despite having 10m fewer people and an economy one-eighth the size. Like nearly all of its power plants, many of its vehicles depend on coal, which is used to make the country’s petrol (a technique that helped the old apartheid regime cope with sanctions). A petrochemical complex in the town of Secunda owned by Sasol, a big energy and chemicals firm, is one of the world’s largest localised sources of greenhouse gases.  Zambia is another exception. It burns so much vegetation that its land-use-related emissions surpass those of Brazil, a notorious—and much larger—deforester.

South Africa and Zambia may be extreme examples, but they are not the region’s only big emitters . Nigerian households and businesses rely on dirty diesel generators for 14GW of power, more than the country’s installed capacity of 10GW. Subsistence farmers from Angola to Kenya use slash-and-burn techniques to fertilise fields with ash and to make charcoal, which nearly 1bn Africans use to cook. This, plus the breakneck growth of extractive industries, explains why African forests are disappearing at a rate of 0.5% a year, faster than in South America. Because trees sequester carbon, cutting them counts as emissions in climate accounting.

Other African countries are following South Africa’s lead and embracing coal…A new coal-fired power plant ….Lamu in Kenya is one of many Chinese-backed coal projects in Africa…Africa’s sunny skies and long, blustery coastlines offer near-limitless solar- and wind-energy potential. But what African economies need now are “spinning reserves”, which can respond quickly to volatile demand, says Josh Agenbroad of the Rocky Mountain Institute, a think-tank in Colorado. Fossil fuels deliver this; renewables do not…. Several countries are intrigued by hybrid plants where most electricity is generated by solar panels, but diesel provides the spinning reserves…

Excerpts from  Africa and Climate Change: A Burning Issue, Economist,  Apr. 21, 2018, at 41.

Eco-Peace for the Middle East?

EcoPeace, a joint Israeli, Jordanian and Palestinian NGO thinks it just might. In December it presented an ambitious, if far from fully developed, $30 billion plan to build a number of desalination plants on the Mediterranean shore of Israel and the Gaza Strip. At the same time, large areas in Jordan’s eastern desert would host a 200 square km (75 square mile) solar-energy plant, which would provide power for desalination (and for Jordan) in exchange for water from the coast. “A new peaceful economy can be built in our region around water and energy” says Gidon Bromberg, EcoPeace’s Israeli director. Jordan and the Palestinian Authority are already entitled to 120 million cubic meters of water a year from the Jordan river and West Bank aquifers but this is not enough to meet demand, particularly in Jordan, which regularly suffers from shortages….

The main drawback to making fresh water from the sea is that it takes lots of energy. Around 25% of Jordan’s electricity and 10% of Israel’s goes on treating and transporting water. Using power from the sun could fill a sizeable gap, and make Palestinians less dependent on Israeli power. Renewables supply just 2% of Israel’s electricity needs, but the government is committed to increasing that share to 17% by 2030. Jordan, which has long relied on oil supplies from Arab benefactors, is striving for 10% by 2020.,,, Over the past 40 years there has been a series of plans to build a Red Sea-Dead Sea canal that would have irrigated the Jordan Valley and generated power, none of which have been built.

Beyond many logistical and financial obstacles, the plan’s boosters also have to navigate a political minefield.

Excerpts from Utilities in the Middle East: Sun and Sea, Economist, Jan. 16, 2016, at 54