* Initial funding of $1 bln to be available in six months

* Govt hopes to attract pension, insurance funds as investors

By Krishna N. Das

NEW DELHI, Nov 2 (Reuters) - The Indian government and three state-run firms will jointly set up an equity fund of up to $2 billion for renewable energy companies to tap into to help New Delhi meet its clean energy goals, two government sources told Reuters on Wednesday.

Private and public companies will be able to dip into an initial amount of more than $1 billion starting next fiscal year, said the sources with direct knowledge of the decision taken after a meeting of government officials more than a month ago. India's government hopes the Clean Energy Equity Fund (CEEF) will attract pension and insurance funds from Canada and Europe.

Around $600 million of the initial pool will come from the National Investment and Infrastructure Fund, under the finance ministry, and the rest from state entities NTPC Ltd NTPC.NS , Rural Electrification Corp RURL.NS and the Indian Renewable Energy Development Agency IREDA.UL , according to one of the sources.

The sources declined to be named as they are not authorised to talk to the media. Officials at the finance ministry, new and renewable energy ministry, NTPC, Rural Electrification, and Indian Renewable Energy Development Agency did not immediately respond to requests for comment.

Prime Minister Narendra Modi has set a target of raising India's renewable energy target to 175 gigawatts by 2022, more than five times current usage, as part of the fight against climate change by the world's third-biggest greenhouse gas emitter and to supply power to all of the country's 1.3 billion people.

The program will depend on getting as much as $175 billion in funding with 70 percent of that likely in bank loans and the rest as equity, the sources said.

The government reckons loans are not a problem but providing equity to investors may be difficult due to uncertainties over returns, one of the sources said.

"As we expand our clean energy capacity, there may be a shortage of equity next year," said the source. "Private equity is seen as risky in India but if the government itself creates a fund, that gives a lot of confidence."

India's clean energy push was set back earlier this year when U.S. solar company SunEdison SUNEQ.PK filed for bankruptcy. The company is now looking to secure partners to see through its planned India projects.

Nevertheless, companies are still keen to invest in clean energy.

Japan's Softbank Corp 9984.T , Taiwan's Foxconn 2354.TW and India's Bharti Enterprises have pledged to invest about $20 billion in India's renewable sector. Global solar giants like First Solar Inc FSLR.O , Trina Solar Ltd TSL.N and Fortum FUM1V.HE are also expanding their presence.

(Reporting by Krishna N. Das; Additional reporting by Rajesh Kumar Singh; Editing by Christian Schmollinger) ((Krishna.Das@tr.com; +91-98711-18314, +91)(11)(4954 8026/3015 8026, ; Reuters Messaging: Krishna.Das.thomsonreuters.com@reuters.net))