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Q4 PV Technical Division Quarterly Webinar - Today at 4pm MST/6pm EST

Posted By Richard Strömberg 11-13-2024 12:24 PM
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PV Technical Division Webinar on Wed 13-Nov 4pmMST/6pmEST Greetings everyone, We hope to see you all at our next PV Technical Division Webinar. Alec Schweitzer and Rich Stromberg will present on: Mounting PV modules according to the manufacturer's specifications (with an example of what happens ...

RE: How planning for a heat pump affects solar power system design

Posted By Richard Strömberg 08-26-2024 03:22 PM
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I recommend looking at the CCF monthly totals on their gas bill, converting to mmBTUs and then to watt-hours. Assume that the efficiency of the heat pump will be 2 to 2.5 more efficient than the NG heating system. An easy way would be CCF>>Btus>>kWh *50%. 1 CCF of nat gas has 103,800 Btus. Divide ...

Q3 PV Technical Division Quarterly Webinar is this Wednesday afternoon

Posted By Richard Strömberg 08-05-2024 09:36 AM
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Hello, American Solar Energy Society members, Please join PV Division Chair, John Burke, and PV Vice Chair, Rich Stromberg for the Quarterly PV Technical Division Webinar this Wednesday afternoon, Aug. 7 at 6pmEDT/4pmMDT/3pmPDT. The Q3 webinar will be our "Office Hours" format where we invite you to ...

PV Technical Division Webinar in 2 days - Tristan Erion-Lorico of PV Evolution Labs will be our guest presenter!

Posted By Richard Strömberg 05-06-2024 11:48 AM
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Q2 PV Technical Division Webinar - Wed May 8 4pmMDT/6pmEDT By: Richard Strömberg , 6 days ago Hello ASES Photovoltaics Division members, Please join PV Division Chair, John Burke, Vice Chair, Rich Stromberg and our special guest Tristan Erion-Lorico with PV Evolution Labs on Wednesday ...

RE: Cleaning panels

Posted By Richard Strömberg 04-30-2024 11:12 AM
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It depends on whether your array might collect the occasional dust/dirt that will wash off with periodic rain and snow or if you experience the more problematic pollen that some locations get. Pollen does not easily rinse off. A close up inspection of your array will let you know what you are dealing ...

Invitation to Q2 PV Technical Division Webinar - Guest speaker is Tristan Erion-Lorico from PV Evolution Labs

Posted By Richard Strömberg 04-30-2024 10:55 AM
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Hello ASES Community, Please join PV Division Chair, John Burke, Vice Chair, Rich Stromberg and our special guest Tristan Erion-Lorico with PV Evolution Labs on Wednesday May 8 at 4pmMDT/6pmEDT for the Quarterly PV Technical Division Webinar! Tristan will talk about PVEL's updated PV module product ...

RE: Sharp ND-N2ECU and ND 72 EL(R)UDF Panels

Posted By Richard Strömberg 04-21-2024 01:05 PM
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Hi Mark, How did you resolve this issue? I recently came across some of these 72 and 142 watt Sharp modules in a donation to our nonprofit. My guess is that Sharp designed these to be wired in series and so long as the watts per string were less than 600V and each string was the same total watts, your ...

RE: Reminder: PV Technical Division Quarterly Webinar is tomorrow Wed 20-Mar 6pmEDT/4pmMDT

Posted By Richard Strömberg 03-19-2024 02:38 PM
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Please note that you will need to have a personal or business Zoom account and log in to that account before joinging the webinar. ------------------------------ Rich Stromberg ESS Prog Dir / PhD Student Equitable Solar Solutions / Univ of Alaska Fairbanks Colorado ------------------------------

Reminder: PV Technical Division Quarterly Webinar is tomorrow Wed 20-Mar 6pmEDT/4pmMDT

Posted By Richard Strömberg 03-19-2024 01:02 PM
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Greetings ASES Members, The PV Technical Division would like to invite you all to our next quarterly webinar. (Please note that you will need to have a personal or business Zoom account and log in to that account before joinging the webinar.) You won't want to miss our guest speaker next Wednesday ...

American Solar Energy Society PV Technical Division - Q12024 Webinar Wednesday March 20

Posted By Richard Strömberg 03-14-2024 02:10 PM
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Greetings ASES Members, The PV Technical Division would like to invite you all to our next quarterly webinar. You won't want to miss our guest speaker next Wednesday afternoon. Claire Kearns-McCoy from Clean Energy Associates will share results from their recent study "Solar PV Module Quality Risks". ...

RE: Distributed PV provided by utility companies to avoid private installer reliability issues

Posted By Richard Strömberg 02-14-2024 04:51 PM
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I suspect the companies are reticent to commit to supporting the O&M of a system that they did not personally install. This would be especially true to utilities for whom residential solar installation is not a part of their core business model or competencies. -Rich ------------------------------ ...

RE: Solar ground mount solutions

Posted By Richard Strömberg 02-13-2024 08:05 AM
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Hi Bill, I like the PowerField solution as you can use local fill for the ballast and it keeps the modules tilted so they better shed water/snow (although in heavy snows your modules will still be covered). I would strongly advise against any ground-mount system that places the modules horizontal ...

RE: Join the Technical Divisions Leadership Team!

Posted By Richard Strömberg 08-18-2023 09:45 AM
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Solar Thermal Chair - talk about being in the hot seat! ------------------------------ Rich Stromberg ESS Prog Dir / PhD Student Equitable Solar Solutions / Univ of Alaska Fairbanks Colorado ------------------------------

The Photovoltaic Technical Division is seeking your feedback - short survey

Posted By Richard Strömberg 08-18-2023 09:05 AM
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Greetings to current and prospective members of the PV Technical Division! The PV technical division is working to conduct periodic meetings/webinars and is seeking you inputs to understand your background and interests so that we can structure these online events to best serve you. Many thanks to ...

RE: Question about the Efficiency of Solar Panels

Posted By Richard Strömberg 07-25-2023 09:49 AM
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It mostly depends on the microinverters used and how much they clip power. It is common to pair up a 230-watt module with a 190-watt microinverter (Enphase IQ6 or 7). If this person is only getting 28kW output for 40kW of installed capacity, there will be a bit of ungenerated power due to the sun angle ...

RE: Researchers assess degradation in PV systems older than 15 years

Posted By Richard Strömberg 07-10-2023 09:56 AM
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We should temper our use of these numbers for PV module degradation, both in general and even for this particular system. Their method of using HOMER to quantify the annual output degradation will mask true module degradation. HOMER wasn't actually design to do that (note that as the former Alaska ...

RE: Media Query - Energy Grid Reliability / Senate Hearing

Posted By Richard Strömberg 06-13-2023 09:26 AM
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The best folks to respond to this are the good folks at ESIG (energy systems integration group). Speak with Charlie Smith or Debra Lew. Home - ESIG ESIG works with the ISO/RTOs, large RE developers, large utilities and RE equipment manufacturers to figure out how to get high contributions of renewables ...

RE: Are fossil fuels required if an off-grid home has resistive loads?

Posted By Richard Strömberg 05-15-2023 09:15 AM
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You would want to place a load controller between the batteries and DC electric heater. You could also run 120-volt AC electric heaters through an AC-DC inverter. Sent from my iPhone

RE: Blank screens on SMA Sunny Boy 10000TL-US inverters

Posted By Richard Strömberg 05-09-2023 06:49 PM
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Thanks William. That is in line with my past experience when I have inspected systems with SMA inverters. ------------------------------ Rich Stromberg ESS Program Director Equitable Solar Solutions/Coldharbour Inst. ------------------------------

Blank screens on SMA Sunny Boy 10000TL-US inverters

Posted By Richard Strömberg 05-09-2023 08:57 AM
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Greetings Sunny Boy users! I was inspecting a solar array for a school yesterday. They wanted me to investigate a discrepancy between energy produced and energy billed under their PPA with the system owner. All 9 of the Sunny Boy 10000TL-US inverters had functioning LEDs but none of the displays worked. ...

Richard Strömberg

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