ISLAMABAD, Sep 12 (INP) – The National Power Regulatory Authority (Nepra) has suggested an increase in power tariff of Rs4 per unit in a summary forwarded to the power division. The final decision pertaining to the increase rests with the Ministry of Water, Power and Energy and a notification will be issed in this regard. The summary also include arrears to be collected from customers amounting to Rs18 billion. Inp/khan