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DALLAS (CBSDFW.COM/AP) — Texas faces a less stringent mandate under the final version of a federal plan to reduce power plants’ greenhouse gas emissions.

Under the plan unveiled Monday, Texas would need to cut emissions by nearly 34-percent by 2030. The Environmental Protection Agency had originally proposed that Texas reduce emissions by 39-percent. The EPA’s broader plan calls for a 32-percent nationwide reduction by 2030.

Texas Commission on Environmental Quality spokeswoman Andrea Morrow says that concerns remain about how the plan will affect the cost and reliability of the state’s electrical supply.

The electric distribution grid operator for most of Texas expects half the state’s coal-fired power plants would shut down with Texas forced to develop more renewable energy sources.

After unveiling the final version of his plan to dramatically cut emissions from U.S. power plants, President Barack Obama warned that climate change will threaten future generations if left unchecked.

Governor Greg Abbott vowed Monday to challenge the rule.

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