Sheesh, screw the Keurig, buy a $20 glass french press coffee maker. Measure it full with water, dump into a kettle, and heat the kettle up on the cook top stove with propane. Add favorite grounds, pour boiling hot water when it whistles, and if you want it quick, run the press portion up and down a couple of times to homogenize all the coffee. Using electricity to heat on such a small scale is only practical if you are getting tons of solar free to make your electricity recharge your batteries. It's a huge waste burning gasoline to make electricity via a generator to heat up water to make coffee.
