Renewable energy is gaining fast in South Africa and may still be the most financially viable way to avoid load-shedding and blackouts.
Heliostats use mirrors to harness power, but storing it is tricky - and the solution is a salty one.
An energy storage plant in Ireland could solve the problem of storing large amounts of solar and wind-generated energy for later use.
Dependence on the utility may fade now that homes can feed solar power back into the grid.
Geyser companies faced ruin over the energy department's failure to handle rebates, but Eskom has moved to keep the factories open.
Scorching heat has put the town on the map as a provider of concentrated solar power, but a pricing error may dampen its potential.
Since 2008 when wet coal led to the country's mines being shut down, it has been clear that the country has been in an energy crisis.
The installation of rooftop photovoltaic panels is on the rise, but South Africa is not as solar-friendly as it could be.
The official plan is to diversify power sources in South Africa by harnessing renewable energy, but the 'hows' still need to be pinned down.
Ken Hall has developed a "candle without a flame" that reduces shack fires and cuts carbon dioxide emissions from paraffin lamps and candles.
Solar-powered classrooms have evolved from an experiment into the next big thing in educational initiatives by IT giants like Samsung and Dell.
Riso Africa is the winner of the Innovation in Renewables Award.
In Riverlea, people have had their solar geysers for only two weeks but their shoddy workmanship has dashed many residents' expectations.
The Jasper power plant by Google will generate sufficient energy for 30 000 homes.
A solar-powered aeroplane has landed in Phoenix after a flight from California that included several hours in the air after sundown.
The breakneck speed of development in photovoltaic technology means that soon every surface will be generating energy.
New solar power installations in Germany has hit a record high in 2012 but tapered off as subsidies were cut, Environment Ministry data showed.
The Nelson Mandela Metropolitan University's pilot photovoltaic project produces enough power to run a house.