Renewable energy is now comparable with the cost of building new coal and nuclear capacity. Existing, older power plants already have the capital investment sunk, so they are cheaper — but, in the case of South Africa at least, many of these plants are reaching retirement ages.
HB11 Energy is a spin-out company that originated at the University of New South Wales, and it announced today a swag of patents through Japan, China and the USA protecting its unique approach to fusion energy generation. Fusion, of course, is the long-awaited clean, safe theoretical solution to humanity’s energy needs.
Ocean water is saturated with salt, and undrinkable. Most of the freshwater is locked away in glaciers or deep underground. Less than one percent of it is available to us. So why can’t we just take all that seawater, filter out the salt, and have a nearly unlimited supply of clean, drinkable water?
More than two years after winning an electricity bet, Elon Musk’s resulting Australian solar and wind farm is an almost total success. The facility powers rural South Australia, whose population density falls between Wyoming and Alaska, the two least dense U.S. states.
This surrealist idyll isn’t too far-fetched, say a team of researchers. They’ve been working to harvest usable electricity from plants by experimenting with the “triboelectric” effect in tree foliage. The phenomenon occurs when certain materials that rub against each are pried apart.
Once we trade dirty fossil fuels for clean energy, there’s no reason we can’t keep expanding the economy forever. This narrative may seem reasonable enough at first glance, but there are good reasons to think twice about it. One of them has to do with clean energy itself.
Over the past decade, prices for solar panels and wind farms have reached all-time lows. However, the price for lithium-ion batteries, the leading energy storage technology, has remained too high. So researchers are exploring other alternatives, including flow batteries, thermal batteries, and gravity-based systems.
Aliko Dangote’s plan to reduce Nigeria’s dependency on fuel imports will carve out an even bigger slice of the nation’s $376 billion economy for his empire. Dangote’s future—and, as he likes to say, that of the entire continent’s economy—lies to the south on the Nigerian coast: the construction of a vast oil refinery.
The Bunhill 2 Energy Centre has started capturing excess heat from the London Underground to help warm over 1,000 buildings in the UK capital. A perforated red-metal pavilion distinguishes the Bunhill 2 Energy Centre, which occupies the site of the disused City Road tube station.