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>1*, <br /> lk River <br /> Municipal Utilities <br /> 322 King Avenue phone: 763.441.2020 <br /> Elk River,MN 55330 Fax:763.441.8099 <br /> November 13, 2003 <br /> To: Bryan Adams <br /> From: Vance Zehringer <br /> Subject: Financial Analysis Cycled AC vs Uncontrolled AC <br /> The attached analyses illustrate ERMU's net margin for residential controlled air <br /> conditioner vs uncontrolled. These are the same demand assumptions we agreed to use <br /> previously. Projected 2004 wholesale and retail rates have been applied. The load <br /> control switch cost has been reduced to reflect the $50 per unit rebate GRE pays when <br /> used on cycled ACs. <br /> There is a noticeable difference between the two analyses. Each year,the uncontrolled <br /> AC nets ERMU a$114 loss. The controlled AC nets a loss of$41 per year for the first 7 <br /> years, so in effect, ERMU"saves" $73 a year for every controlled AC it has on its <br /> system. Because the Controlled AC analysis assumes a 7 year amortization schedule for <br /> the load control switch,once the switch and installation is paid for, ERMU"saves" $97 <br /> per year in years 8 and beyond. These losses of course, assume a constant wholesale and <br /> retail rate which we know will not be the case. <br /> I'm wondering if we don't want to get more aggressive in signing our customers up for <br /> the Cycled AC Program? Each controlled AC saves ERMU $1287 over its 15 year life, <br /> once again assuming a constant wholesale and retail rate. Pretty impressive numbers <br /> when you look at the potential. I would guess we have at least 3000 uncontrolled central <br /> ACs and if we could sign up 1500 of them,that number becomes 1.93 million dollars <br /> over that same 15 year period! <br />