Britain's monarchy is becoming environmentally-friendly, but with a high-tech twist.

Prince Charles gave a speech at the World Energy Summit in Abu Dhabi without actually being there.

Instead, this life-like 3-D hologram presented his whole speech without the high cost of travel.

The prince says it's his way of cutting back on his "carbon footprint."

They say his 3-D speech saved around 15 tons of carbon dioxide.

Backers of the technology think others will like the idea of being in two places at once.

Plus, it gave the heir to the throne a very royal exit.