The ministry further said the prime minister's appeal is to simply switch off the lights, and there is no call to switch off either street lights or appliances like computers, TVs, fans, refrigerators and ACs in homes.
'Hackers from China and UK were involved in the October 12 power outage,' Maharashtra power minister tells Rediff.com.
Experts said attempts from China have increased in the last year, which further amplified after the Indian government banned Chinese applications post the Galwan clash.
Train movement halted between Andheri and Churchgate railway stations as the power supply stopped, Western Railway's chief public relations officer Sumit Thakur said.