I am working on a industrial project registered in Existing building Operation and maintenance located Out of US , that have its own electricity production of 4 Mw through gas engines and its free from grid electricity and energy consumption of performance year 2015 is greater than baseline from 2012-2014 because in 2015 they increase the number of equipment now what i can do...?
I want to know method of normalization per production unit basis
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
531 thumbs up
August 9, 2016 - 10:25 am
We have been successful normalizing data based on the building's total energy consumption versus total amount of product produced.
We used kbtu of total building energy consumption versus total kilotons of product produced.
Hence, "kbtu/kilotons of product" became our normalization method.
Muzammal Abbas LEED AP (BD+C)
LEED Project ManagerSIDEworks
1 thumbs up
August 18, 2016 - 6:37 am
Thanks David,
As per your method of normalization now i want to clarify some points:
(1) Through this method i have calculated total baseline year MBTU ( 28,418,797) consumption and total product output in baseline year is 90,000 jeans so the ratio is 28,418,797/90,000 = 315 MBTU/jean Is it ok or not ?
(2) Now as total output in performance period is 120,000 jeans due to increase in number of machines so by normalizing i will take baseline ratio of MBTU / Jeans that is 315 and multiply it with 120,000 (315x120,000) to find total consumption of baseline year. is it ok or not ?
(3) Does MBTU/Jean mean MBTU/Unit ?
(4) For comparison will i first calculate the average of all three baseline years then compare it with performance year in energystar portfolio manager ?
(5) Water consumption entries will be included in energystar portfolio manager or not ?
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
531 thumbs up
August 18, 2016 - 12:06 pm
1) energy consumption per weight of product OR energy consumption per unit of product is an acceptable normalization metric. (both are annual values)
2) the method you outlined is incorrect. The 'total annual energy consumption / total annual units produced' must be compared against the baseline. Also, baseline must include 3 years.
3) If 'jean' is the product that is sold by the company then yes, jean = unit.
4) Portfolio Manager can be used however i do not believe it includes a process-based normalization feature.
5) Water consumption should be entered into Portfolio Manager however that will not achieve Water Efficiency prereq or credit as they are based on plumbing fixture flow/flush rate calculations rather than actual consumption.
Muzammal Abbas LEED AP (BD+C)
LEED Project ManagerSIDEworks
1 thumbs up
August 19, 2016 - 2:41 am
Thanks Daivd,
But still point number "2" confusing me:
(1) Kindly can you give me a example with rough calculation regarding point number "2":
How The 'total annual energy consumption / total annual units produced' must be compared against the baseline because the baseline power consumption is lower then performance year due to increase in number of machines ?
(2) Yes baseline will be of three years but as per leed reference guide we will calculate average of these three years then compare it with performance year.
(3) there is also confusion on leedonline form which make addition of all three baseline years value and compare the result to the performance year instead of calculating average and then comparing average to performance year.
why addition of all three years because through this results shows large saving ?
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
531 thumbs up
August 19, 2016 - 8:52 am
Here is an example of the calculation we used on a factory in Russia:
BASELINE
2010, 4,307 kBTU/kilotons of product produced
2011, 2,870 kBTU/kilotons of product produced
2012, 3,145 kBTU/kilotons of product produced
BASELINE AVERAGE = (4,307+2,870+3,145)/3 = 3,441 kBTU/Kiloton
PERFORMANCE PERIOD
2013, 2,768 kBTU/kilotons of product produced
(3,441 - 2,768)/3,441 = 0.1956 x 100 = 19.56% improvement from baseline.
In our project the total number of 'products produced' increased significantly each year, however the energy consumption per product produced decreased hence our ability to show improvement.
You are correct, the LEED Online template form is incorrect. I have notified GBCI of this error. Thank you for identifying and posting on LEEDuser.
Muzammal Abbas LEED AP (BD+C)
LEED Project ManagerSIDEworks
1 thumbs up
August 19, 2016 - 10:45 am
Year--Annual Cons--Units/yr--Energy/Unit--Normalization--Final Value
2015--500,0000-------70,000---71------------ 71 x 70,000--- 5,000,000
2014--450,0000-------60,000---75------------ 75 x 70,000--- 5,250,000
2013--370,0000------ 50,000---74------------ 74 x 70,000--- 5,180,000
2012--341,0000-------35,000---97------------ 97 x 70,000--- 6,790,000
Average = ( 5,250,000 + 5,180,000 + 6,790,000 ) / 3 = 5,740,000 Kbtu /Ton
Performance period is 2015
% savig = ((5,740,000 - 5,000,000 ) / 5,740,000 ) x 100 = 12.89 %
Production goes increases yearly and in performance year it is 70,000 units and energy consumption is higher as compare to baseline years due to increase in production. So for baseline i have calculated actual per unit energy consumption and then multiply it with 70,000 ( performance year production ) to normalize the energy consumption according to increase in production for all of three years then by calculating average value i compare it with performance year value to find saving.
Kindly review at earliest and if its incorrect then please explain the same example, how we can take or normalize baseline values b/c of actual energy consumption of baseline years are lower then performance year.
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
531 thumbs up
August 19, 2016 - 11:20 am
Based on the numbers provided in your last post, the normalization should look like this:
BASELINE
2012, 3,410,000, 35,000, 97 energy per unit
2013, 3,700,000, 50,000, 74 energy per unit
2014, 4,500,000, 60,000, 75 energy per unit
(97+74+75)/3 = 82 energy per unit. THIS IS THE BASELINE
PERFORMANCE
2015, 5,000,000, 70,000, 71 energy per unit
(82-71)/82 = 0.13 x 100% = 13% improvement over the baseline.
Muzammal Abbas LEED AP (BD+C)
LEED Project ManagerSIDEworks
1 thumbs up
August 22, 2016 - 1:20 am
David nice to see this but i think both of these calculations are same because the entries in energy star portfolio manager and leedonline is in the form of energy consumption mean we cant enter energy per unit value in that.
So for that is it write:
In performance period production is 70,000 units:
2012, 3,410,000, 35,000, 97 energy per unit, 97 x 70,000 = 6,790,000
2013, 3,700,000, 50,000, 74 energy per unit, 74 x 70,000 = 5,180,000
2014, 4,500,000, 60,000, 75 energy per unit, 75 x 70,000 = 5,250,000
Average: ( 5,250,000 + 5,180,000 + 6,790,000 ) / 3 = 5,740,000
PERFORMANCE
2015, 5,000,000, 70,000, 71 energy per unit
(5,740,000 - 5,000,000) / 5,740,000 = 12.89 % = 13 %
If both of these calculation are same then i can easily enter values as required in leedonline (GJ/sm)
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
531 thumbs up
August 22, 2016 - 10:34 am
I concur, both our calculations are percentages so they provide the same end result. We used an offline calculator when demonstrating improvement to the LEED reviewer. I'd be happy to send to you if you provide me your e-mail.
thank you.
Muzammal Abbas LEED AP (BD+C)
LEED Project ManagerSIDEworks
1 thumbs up
August 23, 2016 - 12:55 am
It's good and please send me at muzammal.sidework@gmail.com
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
531 thumbs up
August 23, 2016 - 9:01 am
Hello Muzammal,
I sent you an e-mail with the information however I received a reply that it is 'waitlisted' and need to signup for "boxbe" for the message to be delivered. I am not allowed to sign up for this.
My apologies.
Dave