RJR Energy

Monitor energy useage at the RJR Ranch, Pullman, WA (N46 40.558 W117 16.276 Elev: 2352 ft.) Equipment list: Sixteen Kyocera KC-130 solar panels, pole mounted in four groups of four panels. SMA 2500U power inverter in grid-tie configuration. System startup: May 19, 2008

Monday, September 1, 2008


I have installed an RS-485 communications link to a Sunny Webbox, from SMA. The Webbox extracts the data from the inverter and passes it to the SMA web page for public display.


Later, I will be developing my own web page which will include my solar power data, along with current weather info with a live photo of the weather at the R J Ranch.

To view the current solar info, click the link, below:


At this site, put the zipcode 99163 in the search box. The "R J Ranch" will appear. CLICK on it

Sunday, August 17, 2008

Weekly Update: 8/17/2008

COMING SOON: Live, real-time, performance figures!

Time connected to the grid: 110 hrs
Electricity produced: 115.00 kWH
Utility meter reads: 2214
Comments: I have added load to the system so that the utility meter runs slightly forward. This is because at the end of the year, if there is a negative value, (We've produced more power than used on location) we lose it ... no reimbursement. Therefore, the best practice is to owe a small amount to the utility company at the end of the year. To add load, I've transferred all of the outbuildings, well pump and koi pond air and water circulator pump to the solar system. This results in a load slightly exceeding the output of the solar power system ... a good thing.

Questions or comments to: roger@RJRsolar.com

Sunday, August 10, 2008

Weekly Update

Time connected to the grid: 93 hrs
Electricity produced: 94.00 kWH
Utility meter reads: 2201
Comments: Note relationship between hours connected and energy produced!

Comments to: roger@RJRsolar.com

Sunday, August 3, 2008

For period July 29 - August 3
Time connected to the grid: 75 hrs
Electricity produced: 92.00 kWH
Utility meter reads: 2207
Comment: We have now passed 1.1 MILLION watts of power generated!

For questions mailto: roger@RJRsolar.com

Saturday, August 2, 2008

Change in reporting schedule

We're making a change to the solar reporting. Soon, we'll have "real-time" reporting of the solar generation, hour-by-hour, including actual solar radiation being received. (Awaiting the hardware and software to facilitate this)

In the meantime, we'll be reporting statistics on a weekly basis, rather than daily, beginning on Sunday. The reporting period during this interim time will be Sunday-to-Sunday.

Tuesday, July 29, 2008

Time connected to the grid: 14 hrs
Electricity produced: 13.00 kWH
Solar Energy: 485 (Langley's)
Utility meter reads: 2210
Weather: Cloudy
Comment: Semi-Automatic

For questions mailto: roger@RJRsolar.com

Monday, July 28, 2008

Time connected to the grid: 15 hrs
Electricity produced: 19.10 kWH
Solar Energy: 625 (Langley's)
Utility meter reads: 2210
Weather: Sunny
Comment: Semi-Automatic

Really interesting fact:
Total time connected to the grid since commissioning: 1058 hours
Total Kilowatt hours produced since commissioning: 1053 kWH

For questions mailto: roger@RJRsolar.com

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