There is now a second sun radiation meter at Noisun. Clouds and railway cables sometimes shadow the first meter and the facility wants to close down despite that the rest of the facility has full insolation. With two meters we get a smoother control and sun energy production. Yesterday, with clear sky almost the whole day, Noisun produced 1760 kWh 77 degree hot water to the district heating net. Today there are more clouds.
A second sun radiation meter