Patel Engineering reported a 9.2% year-over-year increase in net sales for the first quarter of FY2011 despite high exposure to politically volatile Andhra Pradesh markets. Operating margins came in at 16.9%, slightly above estimates. The company maintained its guidance of 20% revenue growth for FY2011. Patel Engineering has a large order backlog of Rs. 8,000 crore and expects to gain further orders in the growing hydropower sector in India. However, the stock has underperformed peers recently due to concerns over Andhra Pradesh exposure, but these are believed to be short term issues.