If there's one thing NYC does right, it's the holidays.

There is simply no better time to enjoy the spectacle of the city. But for all the bright lights and holiday cheer, it's hard for the environmentally conscious among us not to feel some pangs of guilt.

Well there's good news this year. The towering Rockefeller Center Christmas tree is trading in its incandescent lights for LEDs -- 30,000 of them in fact. And the switch more than halves power consumption, nearly cutting the required energy by two-thirds.

Using the energy-efficient LEDs to replace incandescent bulbs will reduce the display's electricity consumption from 3,510 to 1,297 kilowatt hours per day. The daily savings is equal to the amount of electricity consumed by a typical 2,000-square-foot house in a month.

Plus, Tishman Speyer, owners of complex, have recently installed a 365-panel solar array on 5 Rockefeller Plaza, the largest such private installation in the city. You can read more details about the effort, including some novel reuse, here.

And if you're in the city on November 28, why not catch the tree lighting? It is, besides being the 75th tree, a bit of a milestone after all.