“having children and being married vs single with no children”

Better call Las Vegas - it’s totally solar powered. Bunch of hippies eh?

Are you not understanding?

You don’t understand the chart the first guy posted either. The chart is not telling you how many hours of “useful light” exist. It is telling you, as I already reiterated, how many kWhrs a day a 1 meter area receives (on average over a year).

And you’ll never guess where (until recently) that stuff ended up.

And you’ll never guess where (until recently) that stuff ended up.

So why did the expectation of a tip go from 15% to 20% and more? The prices of the meals have generally kept up with inflation so tips do too.

I’d like to know why food trucks are so popular.

PHS isn’t a microgrid solution though. It is a GRID solution. The hospital isn’t going to install PHS.

I actually don’t disagree—I think PHEVs are kind of silly. They’re a tweener technology that ends up with a lot of the worst of both worlds.

We kinda hit a sweet-spot on solar where land isn’t the major cost anymore, the major cost is installer and BOS equipment(balance of system).

Remember Solyndra? Concentrating solar was supposed to be the next big thing but it failed to materialize and everyone went back to photovoltaic panels.

I think it is important for people to understand that combustion engines are only converting ~20% of the total thermal energy into usable energy.

Interestingly, the absence of sunlight impinging on the roof in the wintertime is mostly offset by the panels interrupting the radiation of heat from the roof during the night.

That 40% is heading to the factory floor very soon and 20% is far better than it was just ten years ago.

I think it’s important for people to understand that solar panels are only converting ~20% of the total solar irradiance (W/m2) into electricity. Small scale laboratory tests have made panels verging on 40%, but have not and likely may not be commercialized any time soon.

Is it not efficient enough to replace the batteries for hydrogen fuel cells? Instead of using solar power to charge batteries can’t they use it to create hydrogen that gets used to power generators. Surely it’s cheaper to create storage for hydrogen then a humongous battery!... Right?

So in this scenario, a 2by2 (small) solar panel would generate 9-10 kWhrs of electricity per day

Electric cars are expensive because batteries and electric motors are expensive. Today $150/kWh for a battery is considered a good deal. Pure electric cars range from 25kWh (Nissan Leaf, $3750) to 100 kWh (Tesla Model S P100D, $14000). A 50kW electric motor may only cost about $700 but the controllers are closer to…

I’ve always wondered how our Canadian friends feel about the onslaught of young Americans every weekend.