Ed Minch
  • Chestertown, MD
  • United States
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Solar performance anomaly

Started this discussion. Last reply by Rich Mialki Jr 19 hours ago. 12 Replies

I have asked this same question here before but have never been able to come up with a good answer.  Five years later I am trying again.In 2011, I put 5.1 kW of solar on my south facing roof with an…Continue

Heat and A/C on a boat

Started this discussion. Last reply by John White Jun 4. 3 Replies

My 40 foot sailboat is only about 100 ft2 of floor space, the surface area is more that of a mobile home - long and narrow, the hull and deck are about an R-5, the glass is all single pane, and there…Continue

Tags: Boat

Cold climate wall

Started this discussion. Last reply by Don Hynek Jul 11, 2014. 2 Replies

I have heard Joe Lstriburek twice say that a wall in this climate (Albany NY, almost 6,000 DD) should have 1/3 of the R-value on the outside of the structure and 2/3 in the cavities to prevent…Continue

Duct testing in a conditioned crawlspace

Started this discussion. Last reply by Ed Minch Nov 25, 2011. 13 Replies

Concerning duct testing in crawlspaces (this is for new houses for Energy Star, but will be the same for existing houses):I have a house on a conditioned crawl with ducts in that crawl.  There is an…Continue

Tags: testing, duct, crawl, conditioned

 

Ed Minch's Page

Latest Activity

Rich Mialki Jr replied to Ed Minch's discussion Solar performance anomaly
"David covered your issue well.  I work for a large Electric Coop and my last home was net zero electric due to the 5.28 kW PV system I installed.  Not all utilities have meters with multiple registers that record Net, forward and backward…"
19 hours ago
Ed Minch replied to Ed Minch's discussion Solar performance anomaly
"Thanks all - I have been out of town with grandkids for the last 7 days (loads of fun but boy do I need a nap).  I appreciate all of the answers and I am really looking for an answer, so let me go over it again and try to fit your comments…"
Oct 21
David Butler replied to Ed Minch's discussion Solar performance anomaly
"@Daniel, Ed said he has a revenue grade SREC meter, which presumably is the one he's using for  his calculations (right, Ed?).  A revenue grade meter is necessarily on the output side of the inverter, so it would already reflect the…"
Oct 16
Bruce A. Bailey replied to Ed Minch's discussion Solar performance anomaly
"I would begin by asking your power company for the hourly numbers for the billing period. Depending on the metering system they should be able to give you the hourly kWh you purchase from them and the hourly kWh you sell to them. What they will not…"
Oct 16
Daniel Baur-McGuire replied to Ed Minch's discussion Solar performance anomaly
"I have run into this twice. Both times it was the way the utility calculated and billed for electrical usage. They just made it confusing. Hidden charges built into the payout calculator.  otherwise, I was thinking; line loss,…"
Oct 16
Brett Little replied to Ed Minch's discussion Solar performance anomaly
"Frustrating! Can't help you there but I have a question. Do you use any other energy? gas or oil? If not, we can get you the zero energy hero award! "
Oct 15
Nancy Hiler replied to Ed Minch's discussion Solar performance anomaly
"Since the utility already checked the net meter, it sounds as if it's the inverter itself is either having a problem or its not communicating correctly with your monitoring system. See if you can get data directly from the inverter; ask your…"
Oct 15
Michael Johnson replied to Ed Minch's discussion Solar performance anomaly
"Does the utility program calculate / make provision for 'line loss'. You would have to find out if this is the case from one of the utilities programmers. Most, other than the programmers, will not know if this is the case. Might be a…"
Oct 15
Mick Lane replied to Ed Minch's discussion Solar performance anomaly
"If I had to guess the inverter is telling you the how much DC you are making with the PV. The inverter is probably eating those kWh converting it to AC. "
Oct 15
David Butler replied to Ed Minch's discussion Solar performance anomaly
"Indeed, I'm not surprised you're already up to speed on how this works. But the size of your discrepancy instilled a wee bit of doubt. You wrote: "The array website tells me two things - my actual usage, and the amount the array has…"
Oct 14
Ed Minch replied to Ed Minch's discussion Solar performance anomaly
"David Thanks for the thoughtful answer.  Yes, I have a revenue grade meeter. I think I have taken out of the equation the factors you mention above.  My electric meter tells me how much I have used net.  The array website tells me two…"
Oct 14
David Butler replied to Ed Minch's discussion Solar performance anomaly
"Hi Ed, one possibility is a calibration issue with the inverter meter, but that seems highly unlikely with such a large discrepancy. I've had several clients describe the exact same problem and it always turns out to be a misunderstanding as to…"
Oct 11
Ed Minch posted a discussion

Solar performance anomaly

I have asked this same question here before but have never been able to come up with a good answer.  Five years later I am trying again.In 2011, I put 5.1 kW of solar on my south facing roof with an 8 pitch - close to ideal in my Mid-Atlantic location.  It makes me about 6500-6700 kWh per year if you look at the installer's website and the readout on the side of the inverter.  I receive SRECS for this amount of production.I have a net-zero meter - runs in reverse to put excess production back…See More
Oct 10
Ed Minch replied to John Lile's discussion Air Sealing Manufactured Home
"We have worked extensively for a couple of modular (not manufactured! - these are trailers = double wide) builders, one completing Energy Star Certs.  In my experience in the mid-Atlantic, they all now do a pretty good job of gasketing the mate…"
Sep 25
Ed Minch replied to John Lile's discussion Air Sealing Manufactured Home
"Chris I agree, and then notice that puts the duct system outside of the house.  So the duct systems frequently have to be rebuilt, sealed and then insulated.  And if the return system is a series of holes along the edges using the…"
Sep 19
Ed Minch replied to John Lile's discussion Air Sealing Manufactured Home
"Many of the WAP programs have written extensively on sealing of these guys.  West Virginia in particular has been aggressive on standardizing processes.  I have been away from WAP for 10 years now, so I don't have any names for you…"
Sep 16

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Comment Wall (1 comment)

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At 10:12am on December 24, 2010, Diane Chojnowski said…

Hi Ed,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the
place for you!

Don't forget to upload your profile photo. And, add your location on our Member
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Thanks!
Diane, HEP Moderator

 
 
 

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19 hours ago
Rich Mialki Jr replied to Ed Minch's discussion Solar performance anomaly
"David covered your issue well.  I work for a large Electric Coop and my last home was net zero…"
19 hours ago
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Robin Henry replied to Brett Little's discussion Looking for someone to do a webinar on ERVS and HRVS. Any interest?
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