However, retail demand was tepid with the portion reserved for them getting subscribed 43 per cent so far.
PFC is the second PSU to be divested in the current fiscal under the government's disinvestment programme.
In April, Government had sold 5 per cent stake in REC for Rs 1,550 crore.
The share sale, which began at 0915 hours, received good response from institutional investors and portion reserved for them was subscribed 1.34 times by 1135 hours.
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Overall, the offer was subscribed 1.16 times and the subscription may rise further during the day as bidding will continue till 1530 hours.
With the successful sale of 6.60 crore shares in Power Finance Corp (PFC) through a one-day OFS route at a floor price of Rs 254 apiece, the government may get over Rs 1,600 crore.
The floor price of Rs 254 a share was at a discount of 2.14 per cent over Friday's closing price of Rs 259.55.
PFC is the first disinvestment under the modified OFS rules of Sebi under which companies are allowed to disclose stake sale plans two 'banking' days ahead of the issue.
The Department of Disinvestment had approached Sebi in March saying they do not want trading days in-between the announcement and stake sale.
Earlier, the companies were required to give an advance notice of two trading days before the OFS, which the government says gave scope for speculators to beat down the share price of the disinvestment-bound PSU.
As much as 20 per cent of the issue size is reserved for retail investors and 25 per cent for mutual funds and domestic insurance companies.
The remaining portion is left for institutional investors, which are usually lapped up mostly by domestic financial institutions and foreign funds.