Focus of the debate was on domestic policy and economy with both candidates taking time to highlight their respective plans for the future of clean energy in the country.

The incumbent president called for more efforts and investments to produce a greater share of energy within the country to make it more independent while continuing his emphasis on clean renewable energy as the way forward.

"On energy, we agree we’ve got to produce domestic energy, but we’ve got to use energy sources of the future like wind and solar and biofuels," said President Obama.

The current administration has invested $90bn in clean energy funding over the last four years, but this came for sharp criticism from Republican nominee Mitt Romney who argued that the investment hadn’t created enough jobs.

The Republican Party nominee, however, did endorse green energy sources while being less-than emphatic than the president by questioning the amount of investments that went into it.

"And by the way, I like coal. I’ll make sure we buy clean coal," said Romney.

The two candidates also disagreed on the amount and forms of tax cuts received by the oil industry while the issue of climate change hardly found a mention in the 90-minute duel.