Vatican to build solar panel roof

System

Pope Benedict XVI is to become the first pontiff to harness solar power to provide energy for the Vatican, engineers say.

The deteriorating cement roof tiles of the Paul VI auditorium will be replaced next year with photovoltaic cells to convert sunlight into electricity.

The cells will generate enough power to light, heat or cool the hall, the Vatican engineers say.

Last year the Pope urged Christians not to squander the world's resources.

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