Google is developing “smart charging” software to ensure that plug-in electric vehicles don’t cause traffic jams on the power grid.

The search giant is researching a number of energy-related technologies, including car charging software, where IT and “ET,” or energy technology, meet, said Dan Reicher, director of climate change and energy initiatives at Google.org.

One of its projects, still in the experimental phase, is writing software to better manage when plug-in electric cars are charged, Reicher said at the Kema Utility of the Future conference here Thursday.

There is some concern that millions of plug-in electric vehicles charging at the peak times, such as around 5:30 p.m. when people return from work, could cause power disruptions or require construction of new power plants.

To address this, Google has written software with “vehicle dispatch algorithms” that can decide how to best charge cars, Reicher said. In addition to smoothing out the load on the grid, smart charging makes it easier to take advantage of solar and wind power, which are variable sources of electricity.

The software is also designed to simplify matters for grid operators. To maintain a steady frequency on transmission wires, utilities typically call on power generators to increase or decrease the flow of electricity to match the demand, Reicher explained after his talk.

With Google’s smart-charging software, the plug-in electric vehicles could effectively fill that “grid regulation” role, Reicher said.

“You can tell the power generators to power up or you can tell 250 cars to stop charging. It’s exactly the same difference,” he said. “It could be that the car charges for two minutes and then goes off–whatever is most effective.”

Dutch twin brothers who mugged a teenager in the northern town of Groningen were arrested after being caught on camera by a car gathering images for Google’s online photo map service, police said.

The pair stole the 14-year-old boy’s mobile phone and 165 euros ($230) in cash last September.

“The picture was taken just a moment before the crime,” a police spokesman said.

In March, the victim recognized himself and the two robbers while surfing Google Maps, which has a “Street View” feature allowing users to see images of buildings. The images are usually taken by a camera mounted on a car.

After an investigation by the police, one of the 24-year-old twins confessed to robbing the boy.

Apple Inc. co-founder and CEO Steve Jobs, whose recovery from pancreatic cancer appeared less certain when he had to take medical leave in January, received a liver transplant two months ago but is recovering well, The Wall Street Journal reported Saturday.

The newspaper didn’t reveal a source for the report, which comes as Jobs, 54, is expected back in his day-to-day duties at the company shortly. CNBC said later that it had confirmed the Journal’s account, which said Jobs had the transplant performed in Tennessee.

Apple spokesman Steve Dowling told The Associated Press he had no comment. Dowling reiterated what has become Apple’s standard line about the CEO’s health, that “Steve continues to look forward to returning to Apple at the end of June and there is nothing further to say.”

The Journal reported that at least some Apple directors were aware of the surgery.