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Google announced today that it's throwing $55 million dollars to the wind... energy, that is. A post to the official Google blog said the company has invested the aforementioned amount in the Alta Wind Energy Center, which is set to generate 1,550 megawatts of energy -- enough to reportedly power 450,000 homes -- from a batch of turbines in the Mojave Dessert. Developed by Terra-Gen Power, the operation will carry the resulting energy via transmission lines to "major population centers." The ever-humble internet giant pointed out that this particular injection of funds marks a total investment of $400 million in the clean energy sector. In fact, El Goog signed a deal last year to power several of its data centers with wind power, and most recently announced the opening of a seawater-cooled data center in Finland. Physorg Google

It probably won't help you if you leave your oven on, but if you let lights linger after leaving home, Ubiquitous' iRemotTap may help you save a few Kilowatts. This seemingly vanilla powerstip is anything but, boasting the odd addition of a tiny OS embedded in a wireless LAN chip -- all the better to turn your lights off. Users can control the internet-enabled socket stick remotely via a mobile or desktop web browser, allowing them to switch off gadgets and lights after leaving the house. Can't be bothered to log in to switch off? No worries, this plug powers devices down automatically after they reach a pre-defined power consumption limit. If you're forgetful enough to need a light switch in the cloud, Ubiquitous is hoping to sell you peace of mind for less than ¥10,000 ($122) -- whenever these taps get out of R&D, that is. Vid's after the break, if you need convincing. DigInfo TV

We're big fans of charming, ungainly Solar Impulse, and of Captain Bertrand Piccard and Andre Borschberg's quest to circumnavigate the globe in a solar-powered plane. In case you missed the live stream: the Swiss flier just got a little closer to that goal by completing its first international flight, taking off near Berne, Switzerland and landing in Brussels, Belgium, just under 13 hours later. That's half the flight time of an earlier test, in which the craft's 200-foot wingspan, covered with 12,000 photovoltaic solar cells, kept it aloft for 26 hours. Of course, a controlled test flight is one thing -- making solar-powered flight commercially viable means proving your plane can successfully navigate busy airspace. To see Solar Impulse come in for a smooth landing, peep the video after the break. Forbes Solar Impulse

A lot of portable PC power cells last for only four or five hours, after which you'll find yourself chained to a wall socket. Good thing there are external batteries to keep us in current when a plug's nowhere to be found, and  Tom's Hardware  has done some benchmarking on a slew of such devices so you'll know which one's suited for you. A Dell Vostro 3300 and an Inspiron Mini 10 running Windows 7 were used to put packs from Amstron, Brunton, Digipower, Electrovaya, Energizer, Lenmar, PowerTraveller andTekkeon through some real-world paces -- we're talking word processing and web surfing, not fragging and film editing. So if you're in the market for a mobile power unit, hit the source link and get the down and dirty on which external battery's best. Tom's Hardware