So the guy who is telling everyone that PV isn’t cost effective, despite it being one of the fastest growing industries in the US and world-wide..... designs traditional electric systems.

I don’t do CAD. I am not a residential PV guy.
Think bigger. Think of systems where systems are rated in mega instead of kilo.
Now, think about systems which are not PV. You are now in my wheelhouse.

Were you also the electric cars will never work guy?

The reason very few places are running off-grid PV? This is kind of like saying credit cards are not a viable form of money because they exist next to cash and bank wires. Credit cards are not viable! As evidence, name me one city that uses CREDIT CARDS ONLY and no other forms of money!

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).

Wait, so you are arguing that IEEE is wrong?

Fair enough, but considering you went off and told me “I know nothing about solar”(because I made a statement which used an industry term for math purposes but was “technically untrue”), I felt I was entitled to take the piss out of you.

The comments about solar vs. Diesel are really misleading. Google the term LCOE (Levelized Cost of Energy) for well understood comparisons. Miners are flocking to PV because of the cost of storing and moving Diesel. India has mandated laws to convert its cell phone tower backup systems from Diesel gensets to PV +…

I ran the numbers at $350/kWh of capacity for their batteries. That is Tesla’s latest pricing.

Solar irradiance

Ok, then you do a cost compare between off-grid generators vs off-grid PV

“Mr. Get of My Lawn is correct that all the panels are doing is offsetting the burning of diesel. Where he may be wrong is whether or not that comes as net cost or benefit.”

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

Fair point. I didn’t make that statement very well. Panels/real estate/etc are no longer an issue. Getting a 10% improvent from the same square footage of solar isn’t anmajor gain, unless it costs 0% more for the tech

Not wrong. I’ve given a dozen presentations for businesses in Puerto Rico who want to try off-grid.

You need to zoom in. PR has a lot of rain forest. It lowers the hours for much of the island.

Still waiting for that apology.

Batteries charge at something near 95% efficiency (it gets hairy, so if an EE is reading this excuse the incorrect number). It only requires a charge controller to charge the batteries. Solar panels create DC electricity and batteries are charged with DC. You only need to control the voltage to make sure it is optimal…

The problem is that no one, not even Tesla, can make the financial numbers work for their cheap batteries.

I have said this elsewhere.
If Elba and Hiddleston didn’t kill each other, this movie has no right to call itself “Ragnarok”.

I would pay $20 to watch a 1-hour flyt between the two of them in character and then a 1-hour fight scene that ends in death. Get on with it Hollywood!