Friday, December 6, 2013

5 Huge Changes Introduced by LEED v4.0




A decade after LEED was first introduced, the unquestionably most popular green building certification system has truly come a long way. LEED v4, the latest version, is the answer to the criticism that LEED lacked the mandatory prerequisites for energy efficiency.  

If you don’t have time to run through all the changes introduced in LEED v4, here’s a run-through of the major changes:

1.    Measurement of whole building energy

One new prerequisite is the assessment of whole building energy use. Meant to compel and motivate building owners to continually monitor the energy efficiency of their buildings, the data must then be shared to the USGBC. The good news is that there are plenty of energy monitoring options that are available.

2.    Prerequisites with regard to water use

LEED v4 also imposes new requirements with regard to water use: building-level water metering and outdoor water use reduction. There must be a water reduction of at least 30% and the data must be shared to USGBC annually for five years. 

3.    Demand response has been elevated to the level of base credit

With this prerequisite, building owners are now required to have a demand response system that must either be semi- or fully automated. It must meet a 10% load-shed requirement. Also, if the building is not located in an area with a demand response system, it can comply with such requirement as long as it is capable of full automation.

4.    Credit for renewable energy

Projects with renewable energy systems will have a higher number of points under the renewable energy production credit. Even projects that have a ten-year lease for the energy system and is within the vicinity of the utility service area can likewise claim for credit.

5.    Requirement for advanced energy metering

Buildings must do more than just metering the basic performance of the building and have a permanent metering system every one hour or so.
If you want a quick overview of LEED v4, check out this video: http://www.youtube.com/watch?v=UJzdnykumTU

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