Analytical Or Field Studies Of Pf Correction Energy Savings

This forum has quite an extensive history discussing power factor correction related topics. I read many posts regarding energy savings, and found in several of them the statement that there are no energy savings whatsoever. I've seen lots of claims from unscrupulous vendors out there claiming extraordinary energy savings of 20% or more, but the fact remains that there are non-zero savings because when pf is corrected, less current flows, and I2R losses are reduced in transformers, conductors, etc. I have been told by several PQ experts that such energy savings will usually be below 1% of consumption in commercial and industrial facilities, but that in rare instances savings could amount to as much as 3% of consumption.

I have tried several times to find studies that document these small energy savings from pf correction, but so far, all I've been able to find is anecdotal. I'd really like to have a report based on a field study or maybe a theoretical study using a model of a typical electrical distribution system of a C&I facility. Such evidence would provide a firm foundation for combatting inaccurate energy savings claims. Does anyone know of any studies that could help?