The NSW government has committed $1.8 billion from its upcoming budget in a bid to get back on track for its 2030 renewables targets, but the investment in batteries and transmission will not be enough to head off the extension of the Eraring coal power station.

Some $1 billion of the funds will provide initial capital for a new body, the NSW Energy Security Corporation, to invest alongside industry in community batteries and pumped hydro to help the increasingly renewables-dependent grid stay reliable.