The claim comes as Torresol celebrates the second birthday of the 19.9MW Gemasolar, the first plant to marry power-tower CSP technology to molten-salt heat storage,enabling electricity production long after the sun has set.

Although the CSP market has grown more slowly than expected in recent years, dented by the rapid price decline of PV, the sector has continued to trudge forward,both in the US and emerging economies like India and South Africa.