Google is famous for experimental services that don't last long.
Does that beat pumping water into towers, for gravity recovery thru turbines?
Fabric dome appears nearly ~50 yards wide, and several football fields long.
Pumped hydro is about 75 - 80%. And you're never going to build towers that hold enough to make it worth doing. Typically the amount of water needed is massive. A horsepower is the power to lift 33,000 lbs one foot in one minute, so you need something like that falling to produce one horsepower for one minute. That's 746 watts. Or suppose you had a tower 100 feet high, you'd need 330 lbs of water falling every minute to produce one HP. And that isn't even allowing for losses. So to make this thing produce one hp for an hour you'd need 2,475 gallons of water at the top of your 100 foot tower. It gets impractical really fast.
And that is expanded gas at slightly above atmospheric, I can't even imagine what the exhaust of that turbine puts out, but the volume will be huge. My guess is that that thing will only produce significant amounts of power for a minute or two.
But gimmicks can be so interesting, Viva la Popular Mechanics magazine.
It appears energydome.com avoids the patent office, with off the self equipment, and wont verify or validate engineering in public domains.
One would expect Gates, and others were privy to a prototype, or proof of concept, before Google jumped onboard.
