Mumbai, April 21 -- Investment in key infrastructure sectors in India is expected to grow sharply by 45-50 per cent over the current and next fiscals, supported by strong policy push and domestic demand, according to a report by Crisil Ratings.

The key infrastructure sectors include renewables, roads, real estate and the new-age ones, and they account for around half of India's total infrastructure investments and provide strong support to India's GDP growth trajectory.

"Investment growth is likely to remain strong at 45-50% over the current and next fiscals... Consequently, investments in these sectors should rise to ~Rs 23-24 lakh crore," said Krishnan Sitaraman, Chief Ratings Officer, Crisil Ratings.

However, while largely insulated...