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Home My WebLink AboutAgenda Report - October 17, 2001 E-15U ' dCITY OF LODI COUNCIL COMMUNICATION LL_ IL AGENDA TITLE: Adopt resolution authorizing the City Manager to provide funding in the amount of $15,909.60 to fund the Public Benefits Program Grant — Wine Country Plaza Demand-side Management Project (EUD) MEETING DATE: October 17, 2001 PREPARED BY: Electric Utility Director RECOMMENDED ACTION: That the City Council adopt a resolution authorizing the City Manager to provide funding in the amount of $15,909.60 to fund the Public Benefits Program Grant —Wine Country Plaza Demand-side Management Project. BACKGROUND INFORMATION: Owners and operators of the Wine Country Plaza shopping center have embarked upon an energy conservation project. In the ensuing weeks, they will have installed by Royal Roofing Company, a highly reflective product known as white roof guard. Unlike the silver coat or light gray reflective roofing materials commonly used over the past ten years, the white roof guard is now rated as the top reflective product on the market. The Sacramento Tree Foundation, in conjunction with the California Energy Commission, has approved this material for installation on commercial building rooftops throughout the state. A total of 9,000 square feet will be coated with white roof guard at the Wine Country Plaza shopping center, reducing the roofs surface temperature by an average of 45 degrees on a typical Lodi summer day. This heat reduction on the roof then translates into a significantly cooler store or room below the coated roof surface. In most cases, occupants of a building where the white roof guard has been applied, reduce cooling costs (air conditioning) by an average of fifty percent. The total project cost is $79,548.00. The Public Benefits Program grant of $15,909.60 reflects the 20 percent match as identified through the Energy Services Partnership Program for commercial energy efficiency projects (such as the project for the Wine Country Plaza shopping center). The grant will be paid in two equal installments over the next twelve months. The City of Lodi Electric Utility respectfully recommends approval of this grant as a qualifying component of the City of Lodi Public Benefits Program. FUNDING: 164605 — Public Benefits Program (Category: Demand-side Management) Funding Approval: sass., Vicky McAthie, rinance Director Alan N. Vallow Electric Utility Director PREPARED BY: Rob Lechner, Manager of Customer Programs ANV/RL/Ist .1 APPROVED: ( 'j Dix Flynn - City Manager Guic d `ir&SCO "THE ULTIMATE R00FIMG SYSTEM" SINCE 1941 DEMONSTRATED ENERGY SAVINGS OF COOL ROOF SYSTEMS A Technical Seminar presented at Roof Consultants Institute, March 1997 by: Dr. Lisa M. Gartland Building Energy Analysis Program Energy and Environment Division Lawrence Berkeley National Laboratory A relatively new class of roof coatings has been shown to save significant amounts of cooling energy. Cool roof coatings reflect away the bulk of the sun's energy, allowing the roof surface to stay cooler and transferring less heat to the building underneath. Demonstration projects have shown these coatings can save between 20% and 70% of the cooling energy used in a building. These coatings also have the potential to save money, reduce air pollution and reduce the need for reroofing. There are still technical and industrial challenges in the way of the widespread adoption of these coatings as the roofing standard. This paper discusses all aspects of cool roof coatings and their implementation, from the tech- nical to the sociological. DEMONSTRATION OF COOL ROOF SAVINGS: Numerous projects have been undertaken to study the effects of cool roof coatings on roof surface temperature and cooling energy use. All studies confirm the ability of cool coatings to reduce roof surface tempera- tures dramatically - by 50° to 80°F, and to save significant amounts of cooling energy during the sum- mer months. Table 2 summarizes the results of five studies performed in California and Florida, ' the albedos of all roof tops were raised by 40 to 60 percentage points, well into the range of "very high albedo" (over 50%). Regardless of the level of insulation in the roof, all buildings showed significant reductions in the amount of cooling energy used - reductions from 25% to 67%. 1 Akbari, Bretz, Hanfork, Kum, Fishman, Taha and Bus, -monitoring Peak Power and tooling Energy Savings of Shade Trees and lXbte Surfaces in the Sacramento Municipal Utility District (S.MUD) Service Ansa: Data Analysis, Simulations and Results Lawrence Berkeley laboratory Report #LBL-34411, December 1993. NOTE: All Roof Guard Roofing Systems and elastomeric coatings are classified as "very high albedo" Cool Roof Systems with an albedo of greater than 80. Thssco Paint Company • 21595 Curtis Street - Hayward, CA 94545 (SM 395-5109 aspa 6OLS-96£ (009) SM6 VO W MADH • Je04S s1NrO S69LZ • Auodujoo Wlod oosaii 30001 0130091 Novi C RDMIRM amfilvaddwu Uvd8I1S 9.06 t 4.091 d.00I 9.9t Sulluoa altgd6 V jo aSPB a4t 1V J°o)1 aqy JO olo4d PaaaJul ,loos ay1 ul swsas clasp jooj:, ;aagsdt:o Aaxt3 iqS T V xa:to atrJ)t;oJ ai�t{Qi sFaaiuotsl:E� tSZ'•.['!].'J 3aC�� 'd 3ttl;uzdnJ.1'.s� rJ;,rJ� slzaf wj, U013t tsuouzaQ 15t:d ]a elfuca}j. 59NIAdS A'9uN8 7o asmam A.LIALLmmm QFi.LmBNoma LV6L 3JNI5 „1'31SAS ONIdOOd 31M1rtri 3kl.. ofSpiong $x 'RINEW '.4000'111111A 1 j00J JOB 10040$ lj %S£ L9'0 £Z'0 61-21 AJOJs-auo 'UooaB 00000 JOa JOI; aauaplsai lj %£V £L'0 OZ10 paJDlnsulun Aio;s-auo 'ywag 00000 adols oZZ aouaplsaj id %9Z OL'O LZ'0 L 1-21 Ajo4-auo y0oaa oOOO� j0OJ JOIJ 100y3s yo %OV 89'0 80'0 61-6 AjoJs-auo 'OJuawOjooS Joa Jog aouaplsaj d0 %L9 1 LL'O IR U0 LL -d AjoJs-auo ojuawoiooS slzaf wj, U013t tsuouzaQ 15t:d ]a elfuca}j. 59NIAdS A'9uN8 7o asmam A.LIALLmmm QFi.LmBNoma LV6L 3JNI5 „1'31SAS ONIdOOd 31M1rtri 3kl.. ofSpiong $x 'RINEW '.4000'111111A 1 Guar T�r SC� THE ULTIMATE l4DOFING SYSTEM" SINCE 1941 DIFFERENT COLORS AND THEIR EFFECTS ON ROOF SURFACE TEMPERATURES Tests were conducted to determine the effect of colors on the temperature of a roof system or roofing mate- rial. Coatings were applied over 2" of polyurethane foam. Small thermocoupler sensors were embedded in or under the coating material. The following graph shows the difference between colored coatings and other roofing materials when exposed to sunlight. 207 187 16M 147 127 107 W C C) 11DIT101'T 3: Central Texas August - Clear Sky Ambient Temperature 90°F The above number were measured in central Texas with an ambient temperature of 90T. Higher altitudes or ambient temperatures above 90°F will result in even hotter surface temperatures than those measured in this test. From the above graph it can be seen that even light colored coatings raise the temperature somewhat. Shiny aluminum foil reflects sunlight very well although not as well as Roof Guard. unfortunately, alu- minum filled coatings, by contrast, are good absorbers of solar energy, thus generating more heat. Aluminum coatings and galvanized steel both exceeded 170'F in these tests. Tresco Point Company • 21595 Curtis Street • Hayward, CA 94545 (80(11) 395-5109 = W W Q m m U J J _ W k+ 0 O d d LLO 2 m l9 (9 � O Z e Z a o 0 Z Z m Y Z rn Y The above number were measured in central Texas with an ambient temperature of 90T. Higher altitudes or ambient temperatures above 90°F will result in even hotter surface temperatures than those measured in this test. From the above graph it can be seen that even light colored coatings raise the temperature somewhat. Shiny aluminum foil reflects sunlight very well although not as well as Roof Guard. unfortunately, alu- minum filled coatings, by contrast, are good absorbers of solar energy, thus generating more heat. Aluminum coatings and galvanized steel both exceeded 170'F in these tests. Tresco Point Company • 21595 Curtis Street • Hayward, CA 94545 (80(11) 395-5109 RESOLUTION NO. 2001-241 A RESOLUTION OF THE LODI CITY COUNCIL AUTHORIZING THE CITY MANAGER TO PROVIDE A PUBLIC BENEFITS PROGRAM GRANT — DEMAND-SIDE MANAGEMENT PROJECT TO WINE COUNTRY PLAZA WHEREAS, the State has mandated that beginning January 1, 1998, the City of Lodi is obligated to fund various programs through a Public Benefits Charge (PBC) based on a historical electric revenue requirement; and WHEREAS, the requirement amounts to approximately $1 Million per year that must be dedicated to qualifying programs such as energy efficiency. A further stipulation is that these efforts must be done on the customer's side of the meter in order to qualify; and WHEREAS, the Electric Utility Department recommends that the City provide a Public Benefits grant in the amount of $15,909.60 to fund the installation of a highly reflective product known as white roof guard by Royal Roofing Company. Unlike the silver coat or light gray reflective roofing materials commonly used over the past ten years, the white roof guard product is now rated as the top reflective product on the market. The Sacramento Tree Foundation, in conjunction with the California Energy Commission, has approved this material for installation on commercial building rooftops throughout the state; and WHEREAS, a total of 9,000 square feet will be coated with white roof guard at the Wine Country Plaza, reducing the roofs surface temperature by an average of 45 degrees on a typical Lodi summer day. This heat reduction on the roof then translates into a significantly cooler store or room below the coated roof surface. In most cases, occupants of a building where the white roof guard has been applied, reduce cooling costs (air conditioning) by an average of fifty percent; and WHEREAS, the Public Benefits Program grant in the amount of $15,909.60 reflects a 20 percent match as identified through the Energy Services Partnership Program for commercial energy efficient projects. The total cost for this white roof guard project is $79,548.00. The grant will be paid in two equal installments over the next twelve months. The City of Lodi Electric Utility respectfully recommends approval of this grant as a qualifying component of the City of Lodi Public Benefits Program. NOW, THEREFORE, BE IT RESOLVED, that the Lodi City Council hereby authorizes the City Manager to provide a Public Benefits Program Grant in the amount of $15,909.60 to Wine Country Plaza to fund a demand-side management project as set out above. Dated: October 17, 2001 I hereby certify that Resolution No. 2001-241 was passed and adopted by the Lodi City Council in a regular meeting held October 17, 2001 by the following vote: AYES: COUNCIL MEMBERS — Hitchcock, Howard, Land, Pennino and Mayor Nakanishi NOES: COUNCIL MEMBERS — None ABSENT: COUNCIL MEMBERS — None ABSTAIN: COUNCIL MEMBERS — None SUSAN J. BLACKSTON City Clerk 2001-241