How many panels? I've previously reported 157: https://wmckemie.blogspot.com/2019/05/httpsphotos.html
Current count is 197. 140 of those are on a too small wire which limits peak power. A problem I'm working on correcting. My observed total peak powers are about 20kw. My new transformer should support 30-40kw and I will be working to achieve those levels. So, I might look forward to ~240 kwh/day. Perhaps more since my new steeply sloped TwoFaced Rails are less limited by peak power.
The 130 kwh should be worth about $8.32. Out of that, I have to pay a ~$.75 connection fee. With ~35kw production, I might see peak daily values of around $15 on the house meter. I have one other meter that will likely achieve those levels of sales before the house meter. On that peak day, the other meter produced a sale of 103.7 kwh but that was through a 15 kva (15kw) transformer.
2/10/2020
The OTHER side of the coin!
On 2/09/2020, I sold only 2.9kwh to my utility. The cause? Heavy overcast all day. I barely got the PowerWall charged and the water heated. Early in the day, I went off grid so the PowerWall would not be tempted to do any selling to the grid. I went back on grid only after the PowerWall was nearly charged.
Prospects for today look worse. Near noon, my PowerWall is down to 28% and losing ground; I'm producing 200-300 watts and using 400-600 watts.
2/15/2020
Another record on 2/14/2020: 134.8 kwh after having added 12 more panels on a "steeply sloped Two Faced Rail" in south field. That was not an "all day sun" day. I still have about 10 more panels to add to that rail.
2/26/2020
New record for 2/25/2020: 141.3 kwh as reported by the utility. My Curb energy monitoring shows production for that day of 170 kwh. Curb measured production (as opposed to utility reported sales of 134.8 kwh) for 2/14/2020 was 149 kwh. I can hope for a 50% increase in peak power production with the 37.5 kva transformer. Therefore, I can hope for peak sales of up to 200 kwh/day. I continue to plot.
2/28/2020
New record for 2/27/2020: 144.6 kwh. $9.25 less $.75. Across the road meter sold 130.8 kwh. Coming up on $20 for good days. Curb has been working only intermittenly. That's, I think, due to cloud dependence.
3/6/2020
New record for 3/5/2020: 148.4 kwh. $9.50 less $.75. Production was 160 kwh.
Across the road sale was 130.9 kwh.
4/14/2020
New record for 4/13/2020: 159 kwh. $10.33 less $.75. Production was 169 kwh.
Across the road sale was 129.5 kwh. The power was turned off part of the day due to electric work.
Coincidentally, 4/13 was the last day of the billing period. Before the bill is generated, my best guess is that the bill will be a credit of $190. That due to a generally cloudy rainy month. I did run air conditioning two or three days of the month. WAIT! I can quantify the AC demand.....14.1 kwh. I see I also used about 10kwh car charging.
4/27/2020
New record for 4/26/202: 185.1 kwh. Nearly $12 worth. Production was 230.5 kwh. Across the road sale of 147.5 kwh. The house production was enhanced by replacing some panels and increasing power capacity to south field with a second wire. Peak powers went from 20-21kw to ~25kw. Potential, with the current 37.5kva transformer, should be 30-40kw. An additional 6kw worth of panels (or maybe 12kw) is planned in a 2-6 month time frame.
Across the road now has a 50kva transformer replacing the 15kva and power/energy over there will be going up soon as I develop the "north of party shed" field. "Good days" will soon be giving me ~$25 on the two meters.
5/11/2020
New record for 5/10/2020: 194.6 kwh. Aided by no need to run air conditioner. Production was measured to be only 181 kwh. There was likely some energy missed due to internet outage. Across the road sales were 151 kwh but 197.8 kwh the day before. I have additional PV across the road but am having trouble keeping it all operating. Peak powers at both meters are around 25 kw so I have additional capacity to grow into. I'm working on it.
7/4/2020
Bluebonnet has completely screwed up their "report daily energy to customers" system. So, the Bluebonnet data has not been reliably available to me. Looking back from July 4, I see at least one record that went unreported at the time.
209 kwh were sold 6/12/2020.
Even with increasing production, setting records has been more difficult due to the around the clock use of air conditioning and the daily ~2kwh use for water heating.
I believe the peak day sale on the "across the road" meter has been 253kwh. No water heating or air conditioning over there.
My peak credit has been $684.95 for the 31 day billing period that ended 6/11/2020.
Interesting perspective on the base rate connection fee of $22.50 each month. $22.50/30 = $0.75. At three cents/kWh, I need to generate excess power of 25 kWh just to pay it. Maybe I should distill some rainwater? Or charge a stranger's EV for a small "donation". Bake cakes using an electric oven?
ReplyDeleteYou are probably selling at more than $.04; we will know the exact rate in a couple of weeks when the annual credit occurs. Your daily connection fee likely cost you less than 19kwh. Alarmingly, that COULD be 15-20 panels! I figure average daily production per panel could be as low as about 1kwh. On the house meter, I'm selling for a bit more than $.06.
DeleteWhen moving a car to my single "selling for $.04" meter is not too onerous, I tend to charge on the cheaper meter. Another attraction: I do not need to worry about PV production times; I can charge overnight at no additional cost. During the night on the house meter, I'm either pulling from the Power Wall or paying ~$.10.
Ray was right on the new lower rates for Bluebonnet's legacy, "grid as a battery" deal. The rate for 2019 was $.0344/kwh down from over $.04 the previous year. It is unfortunate that we customers do not know the rate until after the energy has been sold.
DeleteI have revised my strategy on how energy is used from each meter. I no longer charge much at the house or across the road ("new rate" meters) and charge mostly at the big barn which has the legacy grid as a battery rates. The cost to charge at the legacy meter was $.0344/kwh for 2019. We won't know the current rate until next year. Charging at a new meter cost $.0645. Both those numbers are "avoided sale" numbers. Charging from the grid would be about $.10.
ReplyDelete