Solar cells make electricity directly from sunlight, but how do they do it?
It's not clear whether South Africa's president can coordinate his ministers in a way that provides clarity about dealing with the country's energy crisis.
The simple experiment of throwing a rock into water actually reveals some fundamental rules of physics.
New analysis revealed less than half the extra pumped hydro capacity promised by Snowy 2.0 can be delivered. There is now overwhelming evidence the project should be put on hold.
Light bulbs can turn electricity into light (and a bit of heat) – an expert explains how they do it.
Energy-wise, the fallout from the attack on Saudi oil facilities has so far been very muted. The surge in oil production in the US over the past decade helps explain why.
Residents have come up with solutions to make usable products out of organic waste materials.
'Switchers' who change their energy retailers often are following accepted wisdom, but research shows it saves them far less than expected.
The likelihood of half of Victoria being plunged into blackout are low – but the question reveals growing tension between the energy market and its regulators.
State renewable energy targets have been driving energy investment in Australia. 'Where and when' the generation and transmission build occurs varies substantially under a national approach.
High speeds, the threat of dangerous crashes, the excitement of the crowd – and the laws of physics on full display. A physicist explains the science of NASCAR.
Only an optimist would expect prices to fall after a series of announcements, some of which are to "consider" doing something.
There's precious little business case for nuclear power in Australia, but we could start with the end product: storing radioactive waste.
South African courts have been reluctant 'to step into the shoes of the regulator'. But the confirmation by the Constitutional Court of the ruling by the Supreme Court of Appeal has changed all that.
Proposed rules for managing energy demand could potentially lower prices and reduce blackout risk, but there are reasons to be skeptical.
Russia's influential position as Europe's main supplier of natural gas is under threat from new discoveries.
A new study lays out what must happen immediately for any hope of limiting global warming to 1.5°C.
Zimbabwe has a severe energy crisis because its major sources of electricity are struggling to keep up with demand.
Electricity consumption will grow as more people switch to electric cars – but this could drive up emissions, unless power is sourced from renewables.
South Africa could become a test bed of technologies that enable households, especially in remote areas, to join electricity trading markets.