NEW DELHI: Large parts of Delhi face blackouts for up to 10 hours a day from Saturday as BSES’ distribution arm that connects the grid with the eastern part of the Capital has written to the government that it has no money to buy power as tariffs are too low.The situation heightens the stand-off between the discoms and Chief Minister Arvind Kejriwal , whose party has accused the distribution companies of overcharging customers by inflating costs. The discoms say their tariffs have been justly determined by the regulator in the past, and higher costs merit a tariff revision now. The companies are resisting Kejriwal’s move to get their accounts audited by the Comptroller and Auditor General of India. BSES Yamuna , which supplies electricity to nearly 14 lakh households, has written to Delhi’s Power Secretary that unless state power firms such as NTPC and NHPC provide electricity on credit, power cuts would begin as early as Feb ruary1. BSES Yamuna, BSES Rajdhani and Tata Power Delhi Distribution Ltd distribute electricity to 46 lakh consumers in the state.According to a top executive of one of the discoms, BSES Rajdhani and Tata Power Delhi Distribution are financially better off but even their supply will suffer unless tariffs are increased. BSES Yamuna issued the ultimatum after state-run Damodar Valley Corporation and SJVN reduced their electricity supplies while NTPC and NHPC may cut supply as timely payment has not been made.As on December 31, BSES Yamuna’s outstanding to power generation and transmission companies of Delhi government alone stood at Rs 1,351 crore, which includes arrears.As of now, BSES Yamuna was making timely payments to central government-owned power generating companies. “With regard to power supply dues of January 2014, there are no funds to pay NTPC and NHPC’s aggregate dues of Rs 104 crore.NTPC will encash the last remaining letter of credit of Rs 84 crore and the balance will remain unpaid to NTPC and NHPC..... In the wake of nonpayment for January dues, no surviving LCs and no visibility on how the arrears will be cleared, NTPC and NHPC have indicated that they will regulate power to BSES Yamuna, resulting in depletion of over 500 mw power supply from early February 2014,” BSES Yamuna chief executive Arvind Gujral wrote to Delhi power secretary Punit Goyal.Gujral sought intervention of power ministry for extension of credit period by 90 more days for payments to central PSUs and requested Ministry of Finance to advise financial institutions to offer funds against the accumulated regulatory assets of over Rs 6,200 crore. BYPL distributes power to central and east areas including Chandni Chowk, Daryaganj, Paharganj, Shankar Road, Karkardooma, Laxmi Nagar, Mayur Vihar, and Yamuna Vihar, among others, covering 200 sq km.