Enron Mail

From:hollis.kimbrough@enron.com
To:ilan.caplan@enron.com
Subject:"Vestas Availability"
Cc:mark.fisher@enron.com, benjamin.bell@enron.com, jeff.maurer@enron.com
Bcc:mark.fisher@enron.com, benjamin.bell@enron.com, jeff.maurer@enron.com
Date:Mon, 20 May 2002 02:08:00 -0700 (PDT)

Ilan,

Per your request here is the VA with the leaning towers removed and the 90
day ramp up also removed.

Discounting the leaning towers, there is a slight variation (generally<.1%)
between the EA term in this report and the EA term in the reports the owners
may have seen. This is because the owner reports are corrected for SCADA
counter resets while this dataset is not. We are in the process of
implementing a fix for this variation which includes storing the validated
counter data in our database but that will not be complete before the AWEA
meeting.

If you show this data to owners at AWEA the folks from Trent may object as
they will consider our availability should include leaning towers. By the
same token the sites where we did not negotiate a 90 day ramp up may object
as our availability should include the turbines from commissioning.

Best Regards,
Hollis
---------------------- Forwarded by Hollis Kimbrough/EWC/Enron on 05/20/2002
09:12 AM ---------------------------


Mark Fisher
05/17/2002 04:44 PM
To: Hollis Kimbrough/EWC/Enron@ENRON
cc: Mark V Walker/EWC/Enron@ENRON

Subject: "Vestas Availability"

Here is the latest version. It only uses periods past the 90 day ramp up and
removes leaning turbines. I have made one other change to the code. I
discovered one case where the survey time was over 3000 hours, so I added
code to remove all cases where the ST was greater than 1.10*Actual Survey. I
have added a paragraph explaining these qualifiers.