Next week, the Nuclear Regulatory Commission will rule  on an application from NuScale Power, an Oregon-based startup that is seeking  federal clearance to move ahead with its project to build mini or portable  nuclear reactors.
 Because of their size, the mini plants can  be built at a central factory and shipped via rail or large truck anywhere in  the country, keeping construction costs down.
 An Energy Department official told  New Scientist magazine four years ago that such reactors wouldn't require  maintenance or need to be refueled. After their useful life of about 30 years  they could be returned to the factory.
 And oh yes: They're virtually  terrorist-proof.
 While neighbourhood-friendly mini nuclear plants could  displace a large number of traditional coal- and gas-fired power plants, they  would be especially useful in remote areas where fossil fuels are used to run  generators making it unnecessary to burn large amounts of gasoline and diesel to  transport other fossil fuels to these isolated outposts.