MUMBAI, India, April 27 /PRNewswire/ --     Patni Computer Systems (http://www.patni.com/) (BSE: PATNI COMPUT, 
NSE: PATNI, NYSE:PTI), a leading global IT and BPO services provider, today
announced that it has been ranked as the No. 1 'Green Innovative Information
Technology Vendor' by the prestigious 2009 Black Book Top Green Outsourcing
Vendors Survey, an annual industry survey of outsourcing service providers'
pro-environmental initiatives from the perspective of their client
experience. Patni was credited as a highly recommended vendor who exceeded
client satisfaction, with over 315 client nominations. The Green Outsourcing
Vendors survey is conducted by the Brown-Wilson Group, a Tampa, Florida-based
research organization.

Commenting on this, Jeya Kumar, CEO, Patni said, "We are
delighted to be recognized by our clients for our innovative green
initiatives. As we lead the race of IT vendors who are looking to adapt to
this changing recessionary landscape, we will continue to adopt newer means
to reduce costs for our customers. While Green IT is a key area of concern
for global customers, we have recognized that green initiatives are as much a
business necessity today and for our generations to come."

"Green has secured a major role of the outsourcing decision
making and vendor selection process. Outsourcing buyers across the global
including North America, Europe and Asia are becoming more and more aware of
green issues and are driving the vendors to add sustainability value to its
customers," said Scott Wilson, Partner of Brown-Wilson Group and co-author,
The Black Book of Outsourcing (Wiley Publishers). "Offshore outsourcers,
particularly large competitive vendors like Patni have made exceptional
progress in green alternatives. Patni ranked amongst the top Green IT
Innovative service provider due to its continuous focus on customer
satisfaction and Green & Sustainability Standard Performance," he added.

The Black Book survey 2009 received over 30,000 direct
requests from 95 countries to participate in the Top Green Survey. This was
performed under a strict internal and external audit to authenticate the
accuracy of the information and companies were judged from their client's
perspective, maintaining their confidentiality. The parameters along which
the survey was conducted included the sustainability metrics - Environmental
Protection, Social Improvements, and Economic Growth; Social Economic and
Environmental principles, ISO and LEED certification, and Six Sigma
practices. The survey comprises the highest ranking suppliers in all
outsourcing domains: Information Technology Outsourcing (ITO), Business
Process Outsourcing (BPO), Human Resources Outsourcing (HRO), etc.

Patni was also awarded the prestigious LEED Platinum
(Leadership in Energy and Environmental Design) rating for its Green IT-BPO
Centre in Noida last year.

For further information, contact:
    Heena Kanal
    Patni Computer Systems
    +91-22-66930500
    heena.kanal@patni.com

    Shahnaz Jain
    Text 100
    +91-22-66595519
    shahnazb@text100.co.in