Andrea rossi answered today on his blog JoNP, that the 1MW power plant that is under field test for 400Days will be
"delivered to our Customer will end between November 2015 and February 2016."
He explained before that their target was 365 functioning days over 400.
Note: The concept of "delivered" in industry mean that the responsibility of exploiting the device is transferred to the client, who state formally that he is satisfied by the result which respect his contractual requirements. It seems clear today from Rossi's messages that the plant is already on-site and producing heat, but that it still have to prove it's reliability and performance.
Let us wish he reach his target on-time.
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