On the face of it, media-shy Torrent Power seems to be acutely aware of the political environment in which it operates.
It was the biggest single corporate donor to the ruling Congress party and the main opposition Bharatiya Janata Party (BJP) between 2003-2011, according to an analysis of named donations to political parties by the Association for Democratic Reforms (ADR), a non-governmental group that campaigns for greater transparency in politics.
Torrent Power, which has a market capitalisation of $1.5 billion, is headquartered in Gujarat and is perceived by opposition politicians there as being close to Chief Minister Narendra Modi, who is viewed as a strong contender to become the next prime minister.
Ranganathan sounded frustrated that things were not going according to plan in Agra, and said he was pushing the local government to set up special police stations and courts dedicated to prosecuting electricity theft.
Similar set-ups in the states of Gujarat and Maharashtra had proven successful, he said.
"If the law is strong enough, then local politics doesn't matter," he said.
A few days before the interview, a group of stone-throwing protesters had gathered outside the compound, the latest in a series of such incidents.
When we visited, a guard standing behind a heavy metal gate had body armour, a heavy stick and a rifle piled nearby.