[Equest-users] Electric Peak Demand

[Nicholas Caton]

OK so… the graphical demand chart does something rather unintuitive by
summing each month’s peak demand under the “Total” column… that sum-total
of monthly peaks is meaningless, in my experience.



So for the situation you are describing, you should report 34 kW as the
peak lighting draw for the year (number of decimal places should be
consistent with where you’re sourcing results).  Either use PS-F, or scan
the horizontal row of peaks for each month to identify the highest value
using the graphical reports.



Hope that helps!



~Nick



*NICK CATON, P.E.*
*Owner*



*Caton Energy Consulting*
  1150 N. 192nd St., #4-202

  Shoreline, WA 98133
  office:  785.410.3317

www.catonenergy.com



*From:* Harmon, Amy [mailto:aharmon at sbmce.com]
*Sent:* Monday, March 02, 2015 1:05 PM
*To:* Nicholas Caton; Steve Jacobs; equest-users at lists.onebuilding.org
*Subject:* RE: [Equest-users] Electric Peak Demand



Hi Nick:

I’ve attached two screenshots of the graphical reports for this project.

The “elec consumption.jpg” graphical report matches with the BEPU report.
This is what I used as the “energy use” input on the LEED template.

As I look at the “elec demand.jpg”, I see where the max kw equals 34.022
with the total being 408.1 kw.  The reviewer did comment that the PS-F
report said the max kw for lights was 34.022 kw.

Are you saying I should be using the “elec demand.jpg” graphical report to
input the “demand” on the LEED template?  I assume I would I use the 408.1
kw total and not 34.0 kw that’s used per month.   Correct?

Thanks,





Amy Harmon

Mechanical Engineer

Scheeser Buckley Mayfield LLC

1540 Corporate Woods Parkway

Uniontown, OH 44685

Phone: (330) 896-4664 ext. 107

Direct: (330) 526-2707

Fax: (330) 896-9180



*From:* Nicholas Caton [mailto:ncaton at catonenergy.com
<ncaton at catonenergy.com>]
*Sent:* Monday, March 02, 2015 2:56 PM
*To:* Harmon, Amy; Steve Jacobs; equest-users at lists.onebuilding.org
*Subject:* RE: [Equest-users] Electric Peak Demand



Amy:  Sounds like a simple mix-up.



The BEPU report displays annual consumption totals for each meter.  The
PS-F reports by contrast include both consumption sums and demand values
corresponding to the hour of maximum draw for each end-use (scroll to the
bottom for annual peaks and consumption totals).



You might find it easier for documenting your first few LEED models to
reference the graphical end-use reports for consumption and demand – that’s
how I started out:







*NICK CATON, P.E.*
*Owner*



*Caton Energy Consulting*
  1150 N. 192nd St., #4-202

  Shoreline, WA 98133
  office:  785.410.3317

www.catonenergy.com



*From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
Behalf Of *Harmon, Amy
*Sent:* Monday, March 02, 2015 10:38 AM
*To:* Steve Jacobs; equest-users at lists.onebuilding.org
*Subject:* Re: [Equest-users] Electric Peak Demand



I used the values found in the BEPU report to put in the online template.



*From:* Steve Jacobs [mailto:sjacobseng at gmail.com <sjacobseng at gmail.com>]
*Sent:* Monday, March 02, 2015 1:14 PM
*To:* Harmon, Amy; equest-users at lists.onebuilding.org
*Subject:* RE: [Equest-users] (no subject)



This doesn’t sound like an issue with your electric rates. They are saying
that the actual peak demand that you reported in the LEED template does not
match the peak demand by end use stated in the PS-F report. What was the
source of the values you inputted in Table EAp2-5?









*From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org
<equest-users-bounces at lists.onebuilding.org>] *On Behalf Of *Harmon, Amy
*Sent:* Monday, March 2, 2015 2:48 PM
*To:* equest-users at lists.onebuilding.org
*Subject:* [Equest-users] (no subject)



I received the following comment back from USGBC and was hoping someone
could help shed some light on this for me.



*Table EAp2-5 indicates peak demands have been reported for the Baseline
and Proposed cases; however, these values do not coincide with the energy
modeling outputs provided.  For example, Table EAp2-5 indicates the
Proposed Case lighting peak is 879.8 MBH (257.8 kWh); however, the PS-F
report indicates the peak Proposed Case lighting power is 34.022 KW.
Review the energy modeling output reports and remove any demand value
inconsistencies.*



The project was designed around a uniform electric rate of $0.0703/kWh and
this amount was entered in the Electric Utility Charge screen 4 of 7 in the
wizard mode (photo attached).



Is the USGBC comment aimed at the utility rate or is it something that
needs addressed back in Wizard mode?  If so, how do I go about fixing it?



Any help / guidance is much appreciated.

Thanks!





Amy Harmon

Mechanical Engineer

Scheeser Buckley Mayfield LLC

1540 Corporate Woods Parkway

Uniontown, OH 44685

Phone: (330) 896-4664 ext. 107

Direct: (330) 526-2707

Fax: (330) 896-9180

aharmon at sbmce.com

www.sbmce.com



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Thank you
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