India Ratings & Research, part of global major Fitch Group, also cautioned that expected investments worth Rs 1,75,000 crore in various power projects could turn into non- performing assets unless fuel issues are resolved.
"Non availability of sufficient power as well as insufficient power generation capacity addition could impact the country's overall economic growth," India Ratings & Research Director (Corporates) Salil Garg told PTI here.
For every one per cent increase in Gross Domestic Product (GDP), the power generation need to increase by one per cent.
Otherwise, there would be inadequate electricity supply that can impact not just the power sector but also other industries.
"The progress of reforms in the power sector is happening at a slow pace. The sector is expected to suffer this year (also) and investors are not likely to be enthused to put money into the sector," Garg noted.
Indian economy is projected to grow at a slower pace, in the range of 5.7-5.9 per cent, this fiscal.
India, which has an installed power generation capacity of over 2,00,000 MW, expects to add about 88,000 MW in the current Five-Year Plan ending March 2017.
The report '2013 Outlook: Indian Power', co-authored by Garg and released today, said that fuel risks -- coal and gas-- along with uncertainties about financial viability of distribution companies (discoms) remain major issues.
Huge tariff hikes - required to revive discoms - can't be expected this year as many states have already increased them significantly in recent times, Garg said. Tamil Nadu has raised tariffs by as much as 27 per cent.
Acute fuel scarcity is already hurting power generation. Coal India, the largest supplier to power plants, has not inked any Fuel Supply Agreements (FSAs) since FY 2009.
The report said: "The 114 FSAs for plants commissioned post FY09 and likely to be commissioned till FY15 have a total cumulative capacity of 51,000 MW and with letters of assurance quantity of 216 million metric tonnes (mMT).
"Assuming only 65 per cent to be met through domestic coal, Coal India will have to increase its dispatch to the power sector to 436 mMT by FY15 (a Compound Annual Growth Rate of 12 per cent), which looks difficult."
The total investment required for 51,000 MW, including debt and equity, would be around Rs 2,75,000 crore. With fuel risks, there is a possibility of debt portion - of around Rs 1,75,000 crore - becoming non-performing assets for banks and financial institutions, Garg noted.
India Ratings said government's financial restructuring package for state-owned discoms is a positive step in the short term for the entire value chain of power sector.
"However, its long term benefits would depend on the ability of discoms to lower Aggregate Technical and Commercial losses, hike tariffs and control operational costs such that the average cost of supply decreases and average revenue increases," it noted.
Faced with mounting debts of discoms, which is over Rs 2.46 lakh crore, the Power Ministry in October came up with financial restructuring plan.
Taking over of 50 per cent short term liabilities of discoms by respective state government is a major proposal in the Central government plan.
"The package is voluntary and is currently being worked out by discoms in 10 states namely Rajasthan, Haryana, Uttar Pradesh, Tamil Nadu, Andhra Pradesh, Punjab, Karnataka, Jharkhand, Himachal Pradesh and Kerala," the report said.
India Ratings also noted that if the discoms are unable to achieve operational efficiencies, the package would only have successfully deferred the problems and not resolved them.
Meanwhile, the report said that merchant tariffs might rise due to "high deficits in energy and power, low Plant Load Factors (PLFs) for available capacities due to fuel shortages, low capacity addition, high fuel prices and increasing percentage of imported coal in overall coal supply".