Forum discussion
NC-2009 EAc5: Measurement and Verification
A project illumination system is controlled by a photovoltaic system. This system has a rechargeable battery as its primary energysource and as an auxiliary source it utilizes grid power.
Is necessary to individually measure the energy consumption of this system?
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Is the gas consumption of stoves, ovens, etc. required under this point?
When should a project consider Option B instead of Option D?
Is there a requirement to model baseline energy use as being 25% process loads?
Does this credit specify how energy use should be measured?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
January 22, 2013 - 5:39 pm
Very hard to say from the limited information provided. IPMVP does not require you to measure every energy use. Can the use be derived by other means, say subtraction? Is the use virtually inconsequential (less than 1% of total consumption)?
Sounds like exterior lighting powered by a battery which is charged by photovoltaics and the system is controlled by a photocell? If so as a renewable energy source it should be measured. This does not means it needs to be metered. Can the usage be derived by other means?