Thailand’s energy regulator has approved state-owned PTT Group’s multibillion-dollar acquisition of a company owned by French energy giant Engie, after concerns of an electricity monopoly were resolved in a new proposal.

Engie signed a deal in June with Thai group Global Power Synergy Public Company (GPSC) -- part of PTT—to sell a 69.1 percent stake in Glow, an independent coal-powered energy producer listed on the Thai Stock Exchange and owned by Engie.

The sale—expected to be worth an estimated $3 billion—was blocked in October by Thailand’s Energy Regulatory Commission over worries the acquisition would create a monopoly within some industrial areas.

But a new proposal submitted by Glow was approved Wednesday after the company made provisions to address the worries of a monopoly.

“The ERC agrees in principle for GPSC to merge with Glow after GPSC resubmitted the merging proposal,” ERC spokeswoman Narupat Amornkosit said in a statement released Wednesday.

“The new proposal has cleared what the ERC was concerned about the monopoly.” The new provisions include that Glow will have to sell off one of its power plants before or “at the same time” of the takeover by GPSC, and for Glow to allow customers in an industrial zone to change their power purchase agreements to other providers.