Futurismic

One of those brilliant ideas that I wish I had thought of first: paving roadways with electricity-generating solar cells. Idaho-based startup Solar Roadways have been awarded $100 000 to develop their road-based solar panel technology:

The 12- x 12-foot panels, which each cost $6,900, are designed to be embedded into roads. When shined upon, each panel generates an estimated 7.6 kilowatt hours of power each day. If this electricity could be pumped into the grid, the company predicts that a four-lane, one-mile stretch of road with panels could generate enough power for 500 homes. Although it would be expensive, covering the entire US interstate highway system with the panels could theoretically fulfill the country’s total energy needs.

Furthermore the panels would create road markings with embedded LEDs.

It occurs to me that roads are the perfect media for ground-source heat pumps as the constant passage of cars heats up the road surface, even on cold days. When a new road is laid down (or an existing road is resurfaced) you fill it with the necessary pipework and plug it into the heating systems of nearby houses. Heat pumps would be more useful in urban areas of more northern, colder countries than solar panels due to shorter days in the winter.

[via Physorg][image from Physorg]

The Japanese government has taken another step towards actually building a space based solar power plant. Mitsubishi Electric Corp and industrial design company IHI Corp are to develop a design for a SBSP plant to be up and running at some point in the next three decades:

By 2015, the Japanese government hopes to test a small satellite decked out with solar panels that beams power through space and back to Earth.

There are still a number of hurdles to work through before space-based solar power becomes a reality though. Transportation of the solar panels into space is too expensive at the moment to be commercially viable, so Japan has to figure out a way to lower costs. Even if costs are lowered, solar stations will have to worry about damage from micrometeoroids and other flying objects. Still, space-based solar operates perfectly under all weather conditions, unlike Earth-based panels that are at the mercy of the clouds.

It makes sense to start moving in this direction, but will practical implementation arrive fast enough to help reduce global warming emissions?

[from Inhabitat, via Slashdot][image from Wikimedia]

OK, folks, here’s your weird and way-out patent application for the week: a method for destroying or weakening hurricanes by beaming a heat ray at them from an orbital platform.

Maybe it is crazy, but that same company, Solaren, took a first step in that direction this week when it inked a deal with the northern California utility, PG&E, to provide 200 megawatts of power capacity transmitted from orbit in 2016.

That’s just the start though:

By heating up the upper and middle levels of an infant hurricane, they say they could disrupt the flows of air that power the enormous storms. Air warmed by tropical waters flows up through a hurricane and is vented through the eye into the upper atmosphere. Theoretically, you could heat up the top of the storm and lower the pressure differential between layers, resulting in a weaker storm.

Thanks to regular commenter Robert Koslover for tipping me off to that one; I think HAARP just got a serious relegation in the tin-foil hat weather-modification paranoia league. And it makes the Vatican’s planned solar plant look a bit pathetic by comparison, eh? [image ganked from linked article]

Depending on who you ask, solar power is somewhere between the ultimate clean solution to our energy addiction or a blind alley of inefficiency and cost that distracts us from more reasonable solutions. Recent developments have added a little weight to the former argument, with a solar panel manufacturer claiming a $1-per-Watt grid parity on manufacturing costs:

Using cadmium telluride (CdTe) technology in its thin-film photovoltaic cells, First Solar claims to have the lowest manufacturing cost per watt in the industry with the ability to make solar cells at 98 cents per watt, one third of the price of comparable standard silicon panels. The efficiency is in part due to a low cycle time – 2.5 hours from sheet of glass to solar module – about a tenth of the time it takes for silicon equivalents.

Cost is only part of the battle, of course, but dropping prices can’t harm solar’s status as a contender in the renewables marketplace. [image by laurenatclemson]

However, somebody somewhere is probably going to find some other reason for not deploying it – look at the NIMBYism that has plagued windfarms.

One of the most visually striking science fictional solutions to our hunger for energy has to be SBSP – solar power beamed from space. Nothing says ‘awesome’ quite so much as a lance of coherent energy zapping through the atmosphere and into a collection station before powering your toaster or charging your pod-car…. but how soon might it turn up?

According to the not-so-imaginatively named start-up company called Space Energy, Inc, it could be soon. Space Energy says “it plans to develop SBSP satellites to generate and transmit electricity to receivers on the Earth’s surface [...] The hitch: this concept is based on as yet unproven technology.”

For ‘unproven’ there, you might want to swap in ’sketchy’:

… the actual test results conducted for a Discovery channel documentary proved a total failure. The former NASA executive and physicist who organized the experiment, a John Mankins, admitted in a press conference that the $1 Million budget spent of the experiment resulted in less than 1/1000th of 1% of the power transmitted being received on the other island.

Ouch. I wonder if SE, Inc are sincere but a little deluded, or whether they’re another snake-oil energy company? There’s been a few of those cropping up recently, and I can’t help but suspect there’ll be more to come… especially when the price of oil starts rising again.

Still, maybe two decades will do it for space-based solar – apparently the Japanese are on the case:

Researchers at the Japan Aerospace Exploration Agency (JAXA) have begun to develop the hardware for a SBSP satellite they hope to launch by 2030. They will begin testing this month of a microwave power transmission system designed to beam the power from the satellites to Earth.

All very well, but will no one think of the birds?