The Photovoltaic has been working steadily for us even though we had a poor summer last year. This year we have really ramped up the kwHrs with the month of February delivering 281 hours of sunshine in Wellington ... that is an average of 10 hours sunshine each day. The February chart shows the consistency we had in PV kwhrs during the month.
The DSHH system has also settled in and the core is now up to close to 31 degrees (it fluctuates from start of day to end between 29 and 31. This is 10 degrees higher than it was at the end of March last year when it hit its high for the end of summer/autumn having risen from 14 degrees at turn on in mid January. WE have been told to expect about a ten degree increase each year with about 5 - 6 degrees being used each winter from the core. At this rate it takes about 4 -5 summers to reach the steady state of 45 -50 degrees.
So all looking well for the coming winter where the floor slab will be set for 23 degrees which should give us an air temperture in every room of the house of about 21 - 23 depending on the time of the day. We shouldn't have to use any supplementary heating like we had to in mid winter last year.
The water heating is steady at a daily 60 degrees at the top of the tank and no issues with hot water.
Look for the annual summary which should be posted by the end of the month.
