One of the comments we've got states the following:
Provide a supplement to the EUI analysis that establishes an EUI target (and the associated cost savings) using a target index that is lower than the current year. The target index is intended to represent future energy savings to be achieved.Provide a supplement to the EUI analysis that establishes an EUI target (and the associated cost savings) using a target index that is lower than the current year. The target index is intended to represent future energy savings to be achieved.
The building already got a Target Finder Score of 87 but it does not represent a target index which is commonly represented in units of kBtu/sf.
I don't understad:
How do I establish a target index and the potential cost savings that might be realized by enhancing energy efficiency to achieve the target index?
Which documents do we have to provide to achieve compliance?
Setting the target index will affect the score?
Many thanks!
Trista Brown
Project DirectorWSP USA
449 thumbs up
May 24, 2018 - 8:01 pm
Hi Ana, existing buildings typically generate an Energy Star score using Portfolio Manager, which requires inputting actual metered utility data. You can then use Portfolio Manager to set an EUI target that's lower than your current EUI (for example, by choosing an Energy Star score that's better than your current score). Since you mention Target Finder I'm curious if you're working on a new construction project or an existing building? For EBOM, the documentation typically consists of the table output from Portfolio Manager (showing the current and the target EUI and ES scores), and then you'd apply energy costs to your current usage and your target usage, with the difference being the cost savings.
Ana Paula Quiros
Architect, LEED AP BD+CLivet Consulting
May 28, 2018 - 12:51 pm
Hi Trista, thanks for your response.
We are working on an existing building. We uploaded the Data Verification Checklist on EA pr2 Minimum Energy Performance, to achieve compliance we just need to adjust the operating hours. ..
Building's Energy Star Score is 87 so choosing an EUI target of 85 for example would be ok.
Where do we exactly set the EUI target on Portfolio Manager page?? see attached link https://portfoliomanager.energystar.gov/pm/property/6022320#design
How do we apply the energy costs to our current usage and target usage?
Many thanks!
Ana
Trista Brown
Project DirectorWSP USA
449 thumbs up
August 10, 2018 - 7:07 pm
Hi Ana, you'd want to set an Energy Star score that is better than what you have. So if your score is 87, you might set your target at 90. A higher ES score translates to a lower EUI. I can't access your project with the link you provided, but you can change your building's target on the Goals Tab (under "Current Baselines & Targets"). You can perform a separate calculation outside of Portfolio Manager to develop your energy cost based on how much energy you currently use annually, versus how much you would use if you were to meet your target.