ISLAMABAD - Pakistan is in the final stages of negotiating a deal to increase its electricity imports from Iran tenfold, a Pakistani government spokesman said Tuesday, part of a push to boost trade if sanctions relating to Iran's nuclear program are phased out.Pakistan's trade with Iran, worth $1.3 billion in the financial year 2008-9, plummeted to $217 million dollars in the 2013-4 financial year.The drop came after the United States, European Union and UN imposed sanctions aimed at halting Iran's nuclear program, which Western powers suspected was aimed at creating a nuclear bomb. A deal reached last month means the sanctions could soon be phased out.US Senator Brian Schatz said on Monday he backs the US-led international nuclear deal with Iran, moving President Barack Obama one vote closer to locking in enough Senate votes to make the deal fly.Iran currently exports around 100 megawatts (MW) of electricity to the areas of Pakistan that border Iran. Pakistan is in the final stages of negotiating a deal that will increase that to 1,000 MW, said Zafar Yab Khan, the spokesman for the Ministry of Water and Power."It's likely to be finalised shortly," he said. "The power purchase agreement would include a transmission line."He declined to give details until the agreement is signed.Energy-starved Pakistan suffers about 12 hours of power cuts per day and is keen to import Iranian oil and gas, said Robina Athar, additional secretary in Pakistan's Ministry of Commerce."The biggest issue right now is the payment mechanism," said Athar. "Both central banks are in communication and hope to find a mechanism before sanctions are lifted."