Due to summer, the demand for power has increased and now it has become very difficult to manage.Despite shortage of coal since last year, which has affected the thermal power generation, Mahavitaran has managed to supply power in the face of demand of more than 20,000 MW many times. So in order to manage the load, Mahavitaran has started the load-shedding inthe rotation across Thane and Navi Mumbai . So the distribution company requested the consumers to use as little power as possible. It also supplies power to the Belapur industrial estate, Turbhe and in other parts.. Because of the breakdown in the system of the transmission company, other substation and wheel bearings Manufacturers the system is overloaded. Repair work will be completed in a few days.Mumbai: A breakdown of transformers in the 400/200 KV EHV substation of Maharashtra Transmission Company at Kalva (Thane) has caused some parts of Navi Mumbai and Thane district to experience load-shedding since Thursday night.This substation supplies power to many parts of Thane, Mulund, Vashi, Airoli and few other parts of Navi Mumbai. Repair work will continue on Saturday and the power supply will be restored, said the company spokesperson. The company purchased cheaper power fromprivate companies and power exchange for less than `4 per unit with proper planning which avoided loadshedding, said senior officers.