NASHVILLE, Tenn. — As the rest of the nation debates the feasibility and humanity of lethal injections against a backdrop of scarce drugs and botched executions, Tennessee has come up with an alternative: the electric chair.

Republican Gov. Bill Haslam signed a bill into law Thursday allowing the state to electrocute death row inmates in the event prisons are unable to obtain the drugs, which have become more and more scarce following a European-led boycott of drug sales for executions.

Tennessee lawmakers overwhelmingly passed the electric chair legislation in April, with the Senate voting 23-3 and the House 68-13 in favor of the bill.

Tennessee is the first state to enact a law to reintroduce the electric chair without giving prisoners an option, said Richard Dieter, executive director of the Death Penalty Information Center, a Washington-based nonprofit organization that opposes executions and tracks the issue.