
LF energy data architecture working group presentation
Hi openEEmeter community,
With LF energy data architecture working group we like to have more insight in the current LF energy projects and their data architecture. The goal of the data architecture
Hi openEEmeter community,
With LF energy data architecture working group we like to have more insight in the current LF energy projects and their data architecture. The goal of the data architecture

By
Sander
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#63
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Reminder: OpenEEmeter Meetup Kickoff tomorrow at 12:30pm Pacific
I'm looking forward to getting together with some of you at the OpenEEmeter Meetup Kickoff tomorrow!
Phil
I'm looking forward to getting together with some of you at the OpenEEmeter Meetup Kickoff tomorrow!
Phil

By
Phil Ngo
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#62
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Re: Implementing Fractional Savings Uncertainty (FSU)
Hi Phil and Steve,
Thank you very much for your responses. I really appreciate you spending time sharing your insights.
Steve, your experiment seems very interesting. I would have to think more about
Hi Phil and Steve,
Thank you very much for your responses. I really appreciate you spending time sharing your insights.
Steve, your experiment seems very interesting. I would have to think more about

By
nhi.ngo@...
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#61
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Re: Implementing Fractional Savings Uncertainty (FSU)
For my own edification I duplicated the FSU calculation Nhi provided in the attached spreadsheet. Hopefully I got it right.
Then for fun I "swapped" savings and FSU values between the two buildings in
For my own edification I duplicated the FSU calculation Nhi provided in the attached spreadsheet. Hopefully I got it right.
Then for fun I "swapped" savings and FSU values between the two buildings in

By
Steve Schmidt
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#60
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Re: Implementing Fractional Savings Uncertainty (FSU)
Hi Nhi,
Thanks for reaching out. I'll do my best to answer your questions, although I will ask for some clarification on the second one.
1) It looks to me like you are interpreting the equation
Hi Nhi,
Thanks for reaching out. I'll do my best to answer your questions, although I will ask for some clarification on the second one.
1) It looks to me like you are interpreting the equation

By
ngo.phil@...
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#59
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Implementing Fractional Savings Uncertainty (FSU)
Hi all,
My name is Nhi Ngo from Arcadia and I am working on implementing CalTRACK to evaluate one of our products. I am specifically looking at the Billing Method and want to better understand the
Hi all,
My name is Nhi Ngo from Arcadia and I am working on implementing CalTRACK to evaluate one of our products. I am specifically looking at the Billing Method and want to better understand the

By
nhi.ngo@...
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#58
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Re: How to Use Model Metrics to Gauge Uncertainty
Thanks for pointing that out, Phil. It seems that CalTrack 4.3.2.4 has replaced ASHRAE's 1.26 "empirical coefficient" with a formula, and for M=12 (12 reporting periods) it comes out to 1.30 for
Thanks for pointing that out, Phil. It seems that CalTrack 4.3.2.4 has replaced ASHRAE's 1.26 "empirical coefficient" with a formula, and for M=12 (12 reporting periods) it comes out to 1.30 for

By
Si Chen <sichen@...>
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#57
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Re: How to Use Model Metrics to Gauge Uncertainty
My belief: if the building is "well behaved" with respect to outdoor temperatures and heating and cooling loads, then other nonHVAC loads should have no impact on model fit. But I'm not an OEE expert
My belief: if the building is "well behaved" with respect to outdoor temperatures and heating and cooling loads, then other nonHVAC loads should have no impact on model fit. But I'm not an OEE expert

By
Steve Schmidt
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#56
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Re: How to Use Model Metrics to Gauge Uncertainty
Is it possible for energy loads that occur at specific times of day (unrelated to CDD or HDD), due to timeofuse pricing, to negatively impact the model accuracy? If so, how can these other variables
Is it possible for energy loads that occur at specific times of day (unrelated to CDD or HDD), due to timeofuse pricing, to negatively impact the model accuracy? If so, how can these other variables

By
Michael S Uhl
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#55
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Re: How to Use Model Metrics to Gauge Uncertainty
A few additional comments 
I'd call this a "bad building". Based on the CalTRACK model fit results, energy use is not very predictable. The ASHRAE Guideline 14 requirement for a good model fit is
A few additional comments 
I'd call this a "bad building". Based on the CalTRACK model fit results, energy use is not very predictable. The ASHRAE Guideline 14 requirement for a good model fit is

By
Steve Schmidt
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#54
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Re: How to Use Model Metrics to Gauge Uncertainty
1. Correct  autocorr_resid is rho
2. The value of n should be 365, that is correct. It sounds like you have the right idea for m as well (i.e, if you have 30 daily predictions and want to know the
1. Correct  autocorr_resid is rho
2. The value of n should be 365, that is correct. It sounds like you have the right idea for m as well (i.e, if you have 30 daily predictions and want to know the

By
ngo.phil@...
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#53
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How to Use Model Metrics to Gauge Uncertainty
We've fitted some models and would like to know how to use them to really understand the quality of the models. The model metrics look like this:
and comparing it to ASHRAE 14 guidelines, which
We've fitted some models and would like to know how to use them to really understand the quality of the models. The model metrics look like this:
and comparing it to ASHRAE 14 guidelines, which

By
Si Chen <sichen@...>
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#52
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Edited


Re: What do the red vs green lines in the model graph mean?
OK, thanks for the clarification!

Si Chen
Open Source Strategies, Inc.
Our Mission: https://www.youtube.com/watch?v=Uc7lmvnuJHY
OK, thanks for the clarification!

Si Chen
Open Source Strategies, Inc.
Our Mission: https://www.youtube.com/watch?v=Uc7lmvnuJHY

By
Si Chen <sichen@...>
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#51
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Re: What do the red vs green lines in the model graph mean?
Great question  green are qualified model candidates, red are disqualified model candidates, orange is the selected model candidate. If you look carefully, you'll notice all the red ones have
Great question  green are qualified model candidates, red are disqualified model candidates, orange is the selected model candidate. If you look carefully, you'll notice all the red ones have

By
ngo.phil@...
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#50
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What do the red vs green lines in the model graph mean?
Hello,
We just fitted a daily model, and the graph shows both red and green lines. What do these different colored lines mean?
Hello,
We just fitted a daily model, and the graph shows both red and green lines. What do these different colored lines mean?

By
Si Chen <sichen@...>
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#49
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Re: gas and electric meters at the same building
OK, thank you very much for clearing that up.

Si Chen
Open Source Strategies, Inc.
Our Mission: https://www.youtube.com/watch?v=Uc7lmvnuJHY
OK, thank you very much for clearing that up.

Si Chen
Open Source Strategies, Inc.
Our Mission: https://www.youtube.com/watch?v=Uc7lmvnuJHY

By
Si Chen <sichen@...>
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#48
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Re: gas and electric meters at the same building
Definitely, for buildings with multiple meters, there should be a separate model for each meter. It is important to use different parameters for gas and electricity, as you read in the CalTRACK
Definitely, for buildings with multiple meters, there should be a separate model for each meter. It is important to use different parameters for gas and electricity, as you read in the CalTRACK

By
ngo.phil@...
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#47
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gas and electric meters at the same building
Hello,
What do you recommend when a building has gas and electric meters? I read on https://github.com/openeemeter/eemeter/blob/fc91df2b5fa69125a85b1235d24783c350d5b99a/docs/caltrack_compliance.rst:
Hello,
What do you recommend when a building has gas and electric meters? I read on https://github.com/openeemeter/eemeter/blob/fc91df2b5fa69125a85b1235d24783c350d5b99a/docs/caltrack_compliance.rst:

By
Si Chen <sichen@...>
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#46
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Re: OpenEEMeter integrated in opentaps
Sure. But maybe use the opentaps.org/forum  It might be off topic for OpenEEMeter?

Si Chen
Open Source Strategies, Inc.
opentaps in 1 minute: https://youtu.be/r0AY2P738QY
Sure. But maybe use the opentaps.org/forum  It might be off topic for OpenEEMeter?

Si Chen
Open Source Strategies, Inc.
opentaps in 1 minute: https://youtu.be/r0AY2P738QY

By
Si Chen <sichen@...>
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#45
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Re: OpenEEMeter integrated in opentaps
So glad to see you've built this (and that I won't need to duplicate the work). Can I share a few use cases and see if you think opentaps fills the needs described (or will shortly)?

System Smart
So glad to see you've built this (and that I won't need to duplicate the work). Can I share a few use cases and see if you think opentaps fills the needs described (or will shortly)?

System Smart

By
Michael S Uhl
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#44
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