Our project involves a production plant for pasta and support facilities in Santiago, Chile. Process loads exceed regulated loads, in consequence it is anticipated that process energy efficiency improvements will comprise the majority of energy savings for the project. In addition, the company owns a third of a 5 MW low impact renewable energy plant –a small run-off-the-River hydropower plant which will deliver 1.6 MW to our project. The river is nearby but the plant is off the site for a couple of miles. The plant will deliver renewable energy for approximately a 26% of the energy our project needs. This power comes through a dedicated line, directly to our project were it is used to offset the grid power.
We have considered the possibility of On-Site renewable energy since the online form has an off-site/backup option. But we hesitate because the renewable source is far from the site because the river does not pass close to the site. However we think that this feature meets the intention of the credit which is the use of self-supply renewable energy to reduce environmental and economic impacts associated with fossil fuel energy use. The main issue, in any case, on with we are most interested is in the synergy with the EAp2 Minimum Energy Performance because we are effectively reducing environmental and economic impacts associated with excessive energy use; this would really help our energy intensive project to comply with this prerequisite. Is it possible to account this energy on the energy model as energy savings?
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Susann Geithner
PrincipalEmerald Built Environments
1297 thumbs up
August 12, 2011 - 3:40 pm
I would take a closer look at the District Energy System Guideline, which is to be applied to projects, which get supplied by energy per a district energy plant. That allows you to account for upstream system efficiency. I haven't applied it yet for the production of electricity only but it applies for sure to co-generation plants (Combined heating and power).
Maybe that will help you find an answer.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5915 thumbs up
September 19, 2011 - 1:26 pm
There have been exceptions granted in the past of an off-site renewable system to count. For example, there have been projects which use landfill gas that is generated nearby (but off-site) and piped to the site. Sounds like your situation could be similar.
Make sure that the hydro plant qualifies as a renewable under EAc2. If it counts for EAc2 it will count for EAp2/EAc1.