Kunwer Sachdev, the Inverter Man of India and founder of Su-Kam, wrote opinion columns for the Times of India ‘Voices’ section on patents, EVs, renewable energy and HR — before stepping back to focus on his own work.
How Su-Kam built the Colossal 1P 10 KVA Solar PCU for India’s commercial market — a storage-first solar inverter for an era of heavy power cuts, when grid-feed solar wasn’t the answer.
The Colossal was born in 2008 as a high-capacity inverter to replace the generator. Then Su-Kam built an in-built solar charge controller into the same machine — and it became a Solar PCU.
How Su-Kam’s DT-6S six-stage charging — desulphation, soft start, bulk, absorption, equalization, float — extends inverter battery life. The charging software that built a brand.
Why an inverter beats a diesel generator — and how Kunwer Sachdev built India’s first 5 KVA & 10 KVA inverters at Su-Kam, told through the Hindi film he scripted to convince dealers and customers.
Solar was expensive and there were no subsidies. While others demonstrated it, Kunwer Sachdev commercialised solar — putting it on rooftops, in villages, and across 90+ countries.
Kunwer Sachdev on the mission that drives him today — making clean, affordable solar energy available to every Indian household, and how what he once argued for alone is now national policy.
The IBC makes the Committee of Creditors’ “commercial wisdom” supreme and almost beyond review. I sat in those meetings — sent out of half of them, watching bankers who never asked about operations.
Personal insolvency as a guarantor: I sold everything, paid the highest personal recovery in India, and still found no fresh start.
Kunwer Sachdev on the e-rickshaw he built at Su-Kam — meeting Deepak Singh in the USA, setting up a DC-motor plant in India within six months, and exporting those motors back to America.