Stand alone Welder / Generator for field (no utility power) use. This manufacturer of such units put up a page about it (http://www.millerwelds.com/resources...nerator-Power-). I haven't read the whole article so... please don't judge me if there's anything wrong or inappropriate.

Note: The link mentioned in the post above is included for illustrative purposes only. It's inclusion in my post should not be construed in any way as an endorsement of this product or of using this type of equipment to supply emergency power or of anything at all. ;-)