JSPL had sought its shareholders approval to the deal through postal ballot.
JSPL said its shareholders have approved the resolution of "divestment of the 1000 MW Power unit of Jindal Power Ltd into a special purpose vehicle (SPV) for the purpose of transferring the same to JSW Energy, with an overarching aim of garnering value for our equity shareholders".
In May, JSW Energy inked an agreement to acquire the power plant, situated in Raigarh, from heavily indebted JSPL.
Earlier this month, fair trade regulator the Competition Commission of India (CCI) had also approved the deal.
Shareholders also approved the proposed transfer of 920 MW captive power plants to JPL, a subsidiary of JSPL, with an aim of consolidating power assets under a single entity to reap in more operational and cost efficiencies, it added..
They also gave their nod to the transfer of JSPL's registered office from Hisar (Haryana) to Raigarh (Chhattisgarh), the area of operation for JSPL, in order to bring in more efficiency amongst all concerned stakeholders, JSPL said.