Here come demand charges for those with "rooftop solar"!LAS VEGAS (KTNV) — For years, Las Vegas homeowners have turned to rooftop solar panels to slash electricity bills and gain energy independence.Now, a new daily demand charge from NV Energy could threaten those solar savings — leaving some questioning if their investment was worth it.Commercial customers have paid this charge pretty-much forever. Why? Because the utility company has to be able to deliver the energy when you want it, whenever you want it. This means they have to have the capacity to both generate and deliver power 24x7, not just when the sun is shining.......(Click link to read more)