b'reenRoofingUpdate We at MRCA are doing our best to not only stay abreast of the "green revolution" in roofing but also to be a voice ofin a rapidly changing playing.field. Theis reasonfollowing article a little dated but was written by a well-respected member of. the wind generation community.Technolog)\' has obviously advanced since the article was written, but the engineering principles are still valid. MRCA is committed to keeping our membership informed as well as advancing the position that a roofa rooff irst and foremost and a platform for green technology second. is We believe good roofing practices and durable products are paramount for the advancement of our industry. The following article is reprinted with permission from Wind-Works.org (2005). Rooftop Turbines: R Mounting and ooftop BuildingofTurbines IntegrationWind By Paul Gipe Few topics can stirPortionsofthe followinghavecanbedoneagain.Butwhat\'sRooftopmountingofsmall been a t [from] Wind Powerthepoint?TheB projectwindturbinesremainsconmore heateddapedronxtrotorHome,Farm,&Businesswasinten asa challengeversial. Few topics can stir more ded debate amongpublishedbyChelseaG toCon lidatedEdisonCom heateddebateamong the smal reenso I (sp 4 This b includespany,NewYorkCity\'sutility.wind community ascanrooftop the smallring 200 ).ook winda chap onhowtositewindIt succeeded, and it proved thatmounting, and notablyt terSouthwescommunity as canturbines tobest advantage.I amelectricitycouldbefedbackWindpower\'smarketaggressive posting the following in responseinto the utility\'s network withoutingof the concept. The rooftop mounting.Arizona to several requests byuniversi destroyingthecity.Later,themanufacturer oftheAir popular ties to install small windinesturbine was r seriessuggestsinstalling their turb emoved. ginee ine on the roofs of en ring labo microturb onrooftops asa ratories.ere also continues toway to compete withsimplicity Th the be inter t in b ng-integrat of mountingo panels. es uildi edphot voltaic windrbines in Europe, mostlyTheir ad ising generates howls tu vertdue to EU fun .ofprotest fromcritics suchas dingSummarySagWisconsin\'s Mickrillo. Mounting wind turbines-of anyAllwindturbinesvibrate, and they transmit th vibration kind-on a b ing is ab is uild veryadto the structure on which they\'re idea.yetsee an I\'vetoapplicationmounted. Allrooftopscreate whereisworked orwill likely th hasturb n thatinterferesw h work.In short,rooftop turbinesule ceitthewindturbin operatioe\'sn. will not do what their p t ters1 Evenif SouthwestWindpower claimoften willromo heir11engineers were abledesign a andcauseto owners no end of grief.sophisticated dampening system Why I Say Thisthatisolatedthewindturbine beenthMuch haswritten aboutefrom the structure, they couldn\'t small J bs windchargerthateliminate the power-robbing aco and wasinstalledinthelateOAF-Indal Darrieus turbine on aeasterndamaging turbulence creat by 1970sschool ined Canada circa 1980. The turbine operated briefly on a tenementintheBronx.before it was removed because ofitthe building. the damage True, it wasdoneonce,anditcaused to /he building. Photo NRCan.(continued on page 9) 4Midwest ValuesBusinessResourcesNetw orking'