By timothy from Slashdot's stick-it-on-the-wall department
Technologist Ramez Naam
(hat tip to Tyler Cowen's "Marginal Revolution" blog
) has taken a look at the economics of Tesla's new wall-mounted household battery system
, and concludes that it's "almost there," at least for many places in the world -- and seems to already make sense in some. From his analysis: For some parts of the US with time-of-use plans, this battery is right on the edge of being profitable. From a solar storage perspective, for most of the US, where Net Metering exists, this battery isn’t quite cheap enough. But it’s in the right ballpark. And that means a lot. Net Metering plans in the US are filling up. California’s may be full by the end of 2016 or 2017, modulo additional legal changes. That would severely impact the economics of solar. But the Tesla battery hedges against that. In the absence of Net Metering, in an expensive electricity state with lots of sun, the battery would allow solar owners to save power for the evening or night-time hours in a cost effective way. And with another factor of 2 price reduction, it would be a slam dunk economically for solar storage anywhere Net Metering was full, where rates were pushed down excessively, or where such laws didn’t exist.
That is also a policy tool in debates with utilities. If they see Net Metering reductions as a tool to slow rooftop solar, they’ll be forced to confront the fact that solar owners with cheap batteries are less dependent on Net Metering. ... And the cost of batteries is plunging fast. Tesla will get that 2x price reduction within 3-5 years, if not faster.Read Replies (0)
By timothy from Slashdot's a-few-seconds-a-few-seconds-there department
The Wall Street Journal, in a report also cited by The Next Web
and others, reports that Facebook is to soon begin acting not just as a conduit for news links pasted onto users' timelines (and leading to articles hosted elsewhere) but also as a host for the articles themselves
. From the WSJ article: To woo publishers, Facebook is offering to change its traditional revenue-sharing model. In one of the models under consideration, publishers would keep all of the revenue from ads they sell on Facebook-hosted news sites, the people familiar with the matter said. If Facebook sells the advertisement, it would keep roughly 30% of the revenue, as it does in many other cases. Another motivation for Facebook to give up some revenue: It hopes the faster-loading content will encourage users to spend more time on its network.
It is unclear what format the ads might take, or if publishers will be able to place or measure the ads they sell within Facebook. It seems likely Facebook would want publishers to use its own advertising-technology products, such as Atlas and LiveRail, as opposed to those offered by rivals such as Google Inc.
Read Replies (0)
By timothy from Slashdot's slimming-diet department
From the BBC comes this depressing excerpt: Populations of some of the world's largest wild animals are dwindling, raising the threat of an "empty landscape", say scientists.
About 60% of giant herbivores - plant-eaters - including rhinos, elephants and gorillas, are at risk of extinction, according to research. Analysis of 74 herbivore species, published in Science Advances, blamed poaching and habitat loss.
A previous study of large carnivores showed similar declines.
Prof William Ripple, of Oregon State University, led the research looking at herbivores weighing over 100kg, from the reindeer up to the African elephant.
"This is the first time anyone has analysed all of these species as a whole," he said.
"The process of declining animals is causing an empty landscape in the forest, savannah, grasslands and desert."
Here's the study
, published in Science Advances
, on which the BBC article is based.Read Replies (0)