Jim Gunshinan
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  • Berkeley, CA
  • United States
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Jim Gunshinan's Discussions

PHIUS+2015 Climate-Specific Passive Building Standard

Started this discussion. Last reply by terry nordbye Jul 30, 2015. 6 Replies

From Home Energy's July/August issue, written by Mike Knezovich, Director of Communications for PHIUS:In March, Passive House Institute US (PHIUS) implemented a new climate-sensitive passive building…Continue

Tax Time Blues

Started this discussion. Last reply by Sean Lintow Sr Mar 6, 2015. 1 Reply

There is a tax credit available to homeowners who have walls insulated. The credits were continued last year in a budget deal to cover tax year 2014 and the amount is 10% of the cost of materials up…Continue

When your shower is in your kitchen...

Started this discussion. Last reply by Stan Kuhn Mar 5, 2015. 3 Replies

Interesting question by Leanne Maxwell, former colleague at Home Energy:"Aside from all of the obvious logistical issues of having a shower in your kitchen, what kind of IAQ nightmare does it…Continue

Should Homeowners with PV Get Paid Retail or Wholesale Prices for their Excess Electricity?

Started this discussion. Last reply by Dennis Heidner Nov 23, 2013. 24 Replies

I've been doing some research, trying to get my arms around the problem of the longterm sustainability of renewable energy in the Unites States. Here's one big challenge as I see it.Many customers…Continue

 

Jim Gunshinan's Page

Latest Activity

Jim Gunshinan's blog post was featured

Some "Buzz" from ACEEE Summer Study! PV Marries Heat Pump, by Danny Parker, Florida Solar Energy Center

Reducing energy use for heating hot water remains a major challenge around the world. This paper describes a novel solar photovoltaic assisted heat pump water heater (PV-HPWH) which achieved an 83% reduction (COP 5.4) in water heating energy compared with electric resistance. This technology demonstrates very large potential…See More
Aug 7
Jim Gunshinan posted a blog post

Some "Buzz" from ACEEE Summer Study! PV Marries Heat Pump, by Danny Parker, Florida Solar Energy Center

Reducing energy use for heating hot water remains a major challenge around the world. This paper describes a novel solar photovoltaic assisted heat pump water heater (PV-HPWH) which achieved an 83% reduction (COP 5.4) in water heating energy compared with electric resistance. This technology demonstrates very large potential…See More
Aug 6
Chris Stratton commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"@Leo Wow it sounds like you have quite the PV array. Can't quite discern, but sounds like you're close to (or at?) ZNE? As for the 76 kWh/month, I feel the same way when I read that the average US household consumes over 22,000 kWh a year:…"
Jul 23
Daniel Baur-McGuire liked Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
Jul 23
tedkidd liked Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
Jul 23
Chris Stratton commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"@ Jonathan 1. Cost of PV array was about $15k before 30% federal tax credit. 2. The financial payback for our system is not very compelling right now. Our utility bills gas + electricity averaged less than $30/month before we did anything on the…"
Jul 20
Chris Stratton commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"@ Brennan Hey thanks! Yeah, it's time for an update on the energy consumption now that I've installed the mini-split but have yet to completely air seal the house. Let's just say that there's been some rebound effect. :) I'm…"
Jul 20
Chris Stratton commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"@Grey re: estimated vs. actual production Good question! The estimated first-year annual production was 5654 kWh, actual production was 5413 kWh."
Jul 20
Jonathan Nadle commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"Hi Jim, Thanks for your well thought-out and written piece.  I agree with your comments on doing efficiency first before (on-site) renewables.  We have a fully weatherized, nicely efficient home but, for various reasons, went with…"
Jul 19
Leo Klisch commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"WOW! 913kwh/12= 76kwh/month. How is that possible? I live in central Minnesota and started with manual adjust ground mount of 7kw PV  a few years ago. Then added 9kw with that feeding to the local Rual Electric Coop distribution system Oct.…"
Jul 19
grey staples commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"Curious to know how the kWh production turned out relative to what the installer indicated you should expect. "
Jul 19
Brennan Less commented on Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
"Hey Chris, y'all are kicking butt!! I'm sure your new HVAC won't use any energy, because you won't turn it on, right? ;) What a cool, cool project.  On a related note, our whole region just created a community power…"
Jul 19
Jonathan Nadle liked Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
Jul 19
Brennan Less liked Jim Gunshinan's blog post Our First Year with Solar Panels, by Chris Stratton
Jul 19
Jim Gunshinan's blog post was featured

Our First Year with Solar Panels, by Chris Stratton

A local solar company putting supports for PV panels on our roof. No that's not a tiny man on the ladder.We got solar panels installed on our home on 22 April 2016 - Earth Day, coincidentally. We now have a full year's worth of energy data since they were installed, so I thought I would look at how much energy they produced and how much we consumed during our first year of having solar. Fair warning: this post will inevitably be pretty wonky. I'm glad to delve into technical details further in…See More
Jul 17
Jim Gunshinan liked Home Performance Coalition's blog post New Consortium for Energy Efficiency Report – High Stakes for Energy Efficiency
Jul 16

Profile Information

Company
Home Energy Magazine
Professional Interests
All things home performance; Discussing the interface between science and religion/spirituality
Website URL
http://www.homeenergy.org
Twitter ID
@JimGunshinan

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Jim Gunshinan's Blog

Some "Buzz" from ACEEE Summer Study! PV Marries Heat Pump, by Danny Parker, Florida Solar Energy Center

Posted on August 6, 2018 at 12:30pm 0 Comments



Reducing energy use for heating hot water remains a major challenge around the world. This paper describes a novel solar photovoltaic assisted heat pump water heater (PV-HPWH) which achieved an 83% reduction (COP 5.4) in water heating energy compared with electric resistance. This technology demonstrates…

Continue

Our First Year with Solar Panels, by Chris Stratton

Posted on July 16, 2018 at 4:00pm 8 Comments

 A local solar company putting supports for PV panels on our roof. No that's not a tiny man on the ladder.

A local solar company…

Continue

Home Energy Pros Forum Thriving

Posted on June 13, 2018 at 6:30pm 0 Comments

Home Energy Pros Forum has reached a milestone. We welcomed our 6,000th member to the premier online community for home performance pros! More than 430 new members have joined since the Home Performance Coalition (HPC) took over stewardship of the site on October 1, 2017. Home Energy…

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Highlights from the 2018 HPC National Home Performance Conference in Philadelphia

Posted on May 1, 2018 at 4:18pm 1 Comment

This year’s HPC National Home Performance Conference was a rich ground for learning, meeting old friends and new, and gathering good blog material!

The sessions I attended on Health and Housing were fantastic. It’s good to see the home performance community becoming more and more identified…

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Comment Wall (3 comments)

You need to be a member of Home Energy Pros Forum to add comments!

Join Home Energy Pros Forum

At 4:38pm on August 6, 2014, Better Buildings Support said…

Welcome to the Better Buildings Residential Network group. We encourage you to share ideas, exchange materials, and connect with others about topics in energy efficiency. You can also register for a Peer Exchange Call or view call summaries.

 

Please visit the discussion forum and select the “Follow” link at the bottom of the page to receive notifications about new discussions.

 

We are pleased to share this group with you and look forward to you and your colleagues joining the conversation.

 

Best,

The Better Buildings Residential Network Team

At 12:03pm on June 14, 2013, Dan Antonioli said…

Jim. Yes, I still want to friend you and learn more about your work.

Dan

At 10:35pm on April 4, 2011, David Eggleton said…
Jim, where/how do you discuss "the interface between science and religion/spirituality?"  I'd like to drop in.
 
 
 

Forum Discussions

Mini split air conditioners and ceiling fans

Started by Beverly Lerch in General Forum. Last reply by Daniel Baur-McGuire on Monday. 4 Replies

DIY Filter Solution for an Evaporative Cooler, anyone?

Started by Leslie Jackson in HVAC. Last reply by Daniel Baur-McGuire on Monday. 6 Replies

VERY TIGHT HOME WITH OVER SIZED AC

Started by Jerry Needham in BPI. Last reply by Tim O'Brien on Monday. 5 Replies

Apply now for the Jon Siemen Memorial Scholarship!

Started by Diane Chojnowski in General Forum. Last reply by Quinn Korzeniecki Aug 9. 1 Reply

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Brian Robinson replied to Dav Camras's discussion Adding blown insulation to poorly installed batts?
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Our company is very much a family to us, we strive to bring in and develop great people into great…See More
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Diane Chojnowski's video was featured

1950s Home Retrofit to Super Efficient Passive House - Urban Green Building

This 1950s Montreal house was retrofitted to become a super efficient passive house by adding a 16 inch thick layer of cellulose insulation to the exterior. Maison Ozalée's builder, Richard Price from Construction Le Tournesol, also used triple…
yesterday
Diane Chojnowski posted a video

1950s Home Retrofit to Super Efficient Passive House - Urban Green Building

This 1950s Montreal house was retrofitted to become a super efficient passive house by adding a 16 inch thick layer of cellulose insulation to the exterior. ...
yesterday
Profile IconSolarBK, Jessica Jankowski, John Scott and 2 more joined Home Energy Pros Forum
yesterday
Daniel Baur-McGuire replied to Beverly Lerch's discussion Mini split air conditioners and ceiling fans
"Running a ceiling fan actually heats up air. Allison Bailes has some great articles on it.  I…"
Monday
Daniel Baur-McGuire replied to Leslie Jackson's discussion DIY Filter Solution for an Evaporative Cooler, anyone?
"Where are the supply runs located? Look to make sure supply runs are sealed. I would second having…"
Monday
Tim O'Brien replied to Jerry Needham's discussion VERY TIGHT HOME WITH OVER SIZED AC
"New build may not have been "dry" before finished and occupied. Residual moisture from…"
Monday
Daniel Baur-McGuire replied to Jerry Needham's discussion VERY TIGHT HOME WITH OVER SIZED AC
"Oversized A/C systems wont pull out enough moisture from the conditioned air. I would check to make…"
Monday
Efficiency First California's blog post was featured
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Jediah Krajcik is now a member of Home Energy Pros Forum
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Laurie DiDonato posted a blog post

HERS Rater Training Discount ($200) Ends August 20th!

Online: September 17-28th (Times TBA)Classroom: October 1-5th in Manchester, NHFull fee: $2595…See More
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