The number of cities around the world where hundreds of millions of people annually observe Earth Hour. The 2015 Earth Hour, which will be observed on 28 March from 20:30 to 21:30, will see people switch off their lights for an hour in a symbolic call to global leaders to make smart decisions about dealing with climate change.
The number of people around the world who do not have access to reliable energy. Some 2.7bn depend on traditional fuels such as wood, charcoal or manure for cooking and heating, often harvested in ways that are damaging to the environment and used in ways that are highly damaging to health.
An estimated 37% of water is lost from leaks in urban supply systems. In 2013, water leaks cost SA about R7.2bn.
Less than 1% of the water treated by public water systems is used for drinking and cooking. Generally, about 40% to 60% of clean drinkable household water is used for non-essential purposes such as watering gardens and filling swimming pools.
The year by which water demand i s expected to exceed supply in SA. Currently, 40% of the country’s freshwater ecosystems are in a critical condition. In addition, 82% of SA’s rivers are under threat.
The proportion of global energy provision that currently comes from renewable energy sources.
The proportion of total monthly household income that is (on average) spent on energy needs, which is higher than the international benchmark of 10%. Some 43% of all South African households are classified as energy poor (lack of access to modern energy services). Between 1994 and 2010 over 5.2m households and more than 12 000 schools were connected to the grid.
The proportion of South Africa’s energy needs directly derived from coal, mainly to generate electricity but also for synthetic fuel (as produced by Sasol) and petrochemical operations. The energy sector is responsible for about 85% of SA’s greenhouse gas emissions.