That's a good system, im interrested to buy a bus like that. The important thing is to make supplemental energy and hydrogen serve that matter. They said that it is better then a battery bus and i agree. It's then the same with car so a fuelcell car is better then a bev car like the leaf or the tesla. With hydrogen you have a new source of energy and with a battery you just store some limited quantity of old energy usually that come from dirty source like fracking or coal or nuclear.

Future long range BEVs with 100+ Kwh battery pack, PHEVs and FCs with equivalent or even more energy storage will represent useful stored energy to be used during grid failure and/or to help with peak demands.

There are no real reasons why it should not be made available.

If all the energy used in the world were divided by the number of humans and then multiplied by five for the Industrialized human and this energy were made from uranium fission, the amount of fission products produced for the energy used in a hundred year lifetime would fit in a standard 12 ounce beverage can. Most of them would be not radioactive. The same fission products are produced by the ton every year in the oceans by the natural fission of uranium. Fission reactors produce less CO2 than any other energy source and no soot or dust. Hydrogen is not a fuel but has to be extracted using other fuels or sources of energy at great cost.

The Sun is not nuclear radiation free clean energy. Particles causing nuclear exposure circle the earth in large quantities, and a solar storm at the wrong time would have killed Armstrong on the surface of the moon with nuclear energy produced radiation.

Prius automobiles can easily be used as a light source in emergencies. Two CFLs can be used as pairs in series on the full battery voltage with a single simple voltage divider that might even be just two ordinary tungsten bulbs to provide a center tap for several pairs of CFLs in the old EDISON split DC transmission method. A more regular and quick to install power source but more limited would be to connect deep cycle or other batteries to the 12 volt Prius battery and to run an inverter from the deep cycle battery or other batteries. The Prius engine can charge the batteries automatically without the vehicle moving, but the vehicle cannot be in a closed building. If gasoline becomes scarce it may be possible to run the Prius partially on natural gas or propane. Portable generators are cheap enough too. ..HG..

With the proper interface, a Prius can supply a regular size home with all the energy required for days or as long as you keep refueling it. A simple extension pipe on the exhaust can take polluted air outside. Most industrial/commercial repair garages do that on a regular basis.

A year or so ago I posted a brief account of trials and tribulations with Whirlpool. It's quickly becoming the most hated appliance economy. Orange County appliance repair