network of Alaska energy enthusiasts & experts
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Ingemar Mathiasson
- Male
- Ambler, AK
- United States
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Ingemar Mathiasson's Groups
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Fuel Price Working Group
5 members
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Wind Working Group
27 members
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Solar-PV
9 members
Ingemar Mathiasson's Page
Latest Activity
Hi Don
I am using an Outback FM-60 Mppt,,
It allows me to connect strings of modules with higher Voltage rating
Up to 150 Volts
This saves on the wirering..
There is a small continues draw of a few mA for the controller'
But I have not seen any…
HI,
Does anyone have any hands on experience with PWM and MPPT solar controllers? Would you share what your experience has been and the pros and cons that you have discovered for each type of controller.
Thanks
Hi all
does anyone know what kind of panels the PWatts calculator is based on ?
What kind of efficiency of the panels ?
I
Hi All,
There is a test being done by the cold climate housing research found http://cchrc.org/solar-power . If you take the 2009 PV production data and compare it to the information calculated by NREL's PV Watts calculator, actual electricity prod…
Hi all,
To follow are the theoritical output of an solar array and the actual measured output of the array. Based on 6 months of data the theoritical output is 30% higher than actual measured output.
What has other peoples experience been? Actual…
Hi just ran the numbers using PV Watts. http://rredc.nrel.gov/solar/calculators/PVWATTS/version1/US/code/pvwattsv1.cgi The production estimate used for the Noatak water plant closlely follows the expected output. Does anyone have a feel for how actu…
We will see...
There is definitely a very wide margin in how much solar energy we can get in each location.
The different climate and weather is the big factor from just calculations.
I think the only way to do it somewhat accurately would be to r…
Hi Ingemar,
I can definately see why there is a difference in our opinion regarding the value of solar energy. If I understand the answer of 1167 KWh correctly, this is the average expected electrical energy produced by the array monthly. So total…
Hi Don
1. Cost of Commercial power @ $ 0.89/Kwh before PCE..
2. Average Consumption 1500 Kwh/month
3. expected averaged out output of solar 1167Kwh
This is a 2 way tracking array with derate factor of 0.819 on the
inverters..
Now I do have the c…
Hi Ingemar, could you provide the following information for the Noatak waterplant example:
1) Cost of commercial power.
2) Annual consumption of WaterPlant broken down by month.
3) Expected output of 10 KW solar array in Noatak broken down by month.
Yes we do need real data from well installed solar systems. That is why I supplied the actual data below. Is any one collecting this data now? There is flat plate collector data for Fairbanks and Anchorage but that is all the information I have seen…
My calculations shows that it works up here..
If a 10Kw solar-PV array was installed in Noatak to offset the cost of electricity for the Waterplant then the following is true.
Noatak shows savings of $ 11,729.00/ year
(City $ 2,400.00, State $ 9,3…
I'd like to see the Ruby data...I am not sure that the church has the best installation accomplished...when I was last there, there were serious grid errors encountered and the system was down a significant amt. of time. I also question the angle of…
WE all need to collect more data on Solar PV and Solar Thermal in Alaska...real numbers are scarce. We also need to ensure that the installations are technically appropriate and done well. I believe performance is seriously under-rated.
Comment Wall (1 comment)
- At 4:40pm on March 9, 2010,
Martin Leonard III said…
- Hello folks,
I'd like to see the Ruby data...I am not sure that the church has the best installation accomplished...when I was there last there were serious grid errors encountered and the system was done a significant time. I also question the angle of incidence for those peak months in the spring given the positioning of the array.
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