Liberty Interactive – whose interestsinclude websites TripAdvisor and Expedia – has made the investment in theproject company building Solana – which Abengoa said will be the largestparabolic trough CSP plant in the world.

Solana is currently undergoing final testingnear Gila Bend, Arizona. It will be the first US solar plant  to feature thermal energy storage.

The $2bn project is the subject of a $1.45bn