This year's U.S. Capitol Christmas tree will bring the gift of light--energy-efficient light--to Washington, House Speaker Nancy Pelosi's office (D-Calif.) said Monday.

Pelosi's office said the Speaker, joined by the Montana's congressional delegation and governor, will participate in a ceremony Tuesday, December 2 to light the tree, a 70-foot subalpine fir from a Montana national forrest.

The tree won't be the only "green" component in the Christmas celebration, though. The tree will be decorated with energy-efficient LED lights, part of the Capitol's efforts to conserve energy.

The lighting ceremony will take place at 5 p.m. on the West Front of the Capitol.

-Michael O'Brien