(ATA Letterhead on original.) 21 April 1995 Mr Ross Cartey Office of the Regulator-General 1st Floor, 35 Spring Street MELBOURNE VIC 3000 Dear Mr Cartey, re: Breamlea 60 kW Windgenerator This machine was purchased from Generation Victoria in September 1994 by the Alternative Technology Association (ATA), an incorporated non-profit community group. Subsequent negotiations with PowerCor have resulted in a willing agreement by PowerCor for the windgenerator to remain connected to their GL 21 feeder (22 kV). The precedent for this is that the machine was previously so connected since its commissioning in November 1987, and its reliable microprocessor control provides for desynchronisation if the LV single phase parameters of the feeder stray outside the following limits for more than 500 msec.: * 200 to 290 volts * 48 to 52 Hz Additional relevant technical information is that the generator is NOT of the synchronous type, but a simple induction generator whose torque characteristics automatically lock its speed of rotation to the grid frequency. This fact, in association with the microprocessor's safety features mean that the generator poses no threat to the system integrity or safety of PowerCor's maintenence staff, as it always shuts off automatically whenever PowerCor isolates its feeder from the upstream supply. In view of the above, and the fact that the operation of such a small unit clearly falls outside the VPX definition of an Embedded Unit, the ATA requests your office to clarify the status of this machine in terms of existing legislation. If as we suspect, the operation of the windgenerator does not fall within the scope of any existing legislation, the ATA asks the Office of the Regulator-General to allow the current negotiations between the ATA and PowerCor to proceed, on the understanding that we keep your Office fully informed of all developments, and that your Office will also provide advice and any other relevant information concerning draft legislation relating to wind power. Indeed we would be happy to liase with your Office to have input into such draft legislation, as the nature of windpower from a large wind farm for example would be impossible to integrate into the existing VPX bidding structure. Yours sincerely, Michael Gunter, Breamlea Ops. Group, ATA