Inverter Man of India Solar Man of India
Corporate Focus · Founder Account

We Built India’s First BEE 4-Star Inverter — Before the Standard.

China led high-frequency. We built one for India, patented it, and put four BEE stars on a home UPS that paid for itself on the bill.

By Kunwer Sachdev · CEO & Managing Director, Su-Kam (at the time) · Founder 1988–2018 · Published September 28, 2026 · Historical era: BEE 4★ Jul 2015 · Falcon HBU press Mar 2016

AI hero — modern white plastic-body home UPS inverter on an Indian living-room wall with soft LCD glow
Hero (AI) — home UPS as a living-room product. Visual for Su-Kam Falcon HBU under Kunwer Sachdev as CEO & MD.

External media — Energetica (22 Jul 2015): first inverter company with BEE 4-star; quotes Kunwer Sachdev. Launch: Energetica Falcon HBU · ELE Times · Electronics Maker. Source essay: KunwerSachdev.com — Falcon HBU.

The Product Before the Standard

Under my leadership as CEO & MD, Su-Kam built the Falcon HBU — Falcon High Backup UPS — as a high-frequency inverter and a UPS in one box. Trade press put the claim in print: first Indian inverter company with a BEE 4-star rating, framed around ~90% efficiency. I wrote the long product story on KunwerSachdev.com. This page is the Solar Man of India founder record — with the same numbers, the same failures, and the press that verified the launch.

The “U” in HBU mattered: UPS-grade changeover — fast enough, quiet enough, that many homes did not feel the cut. It was also framed as the first of its kind to show backup time left on the display, so a long outage was managed, not guessed.

Su-Kam Falcon HBU home UPS — rounded plastic body with LCD display
Product image (from founder essay) — Falcon HBU: rounded plastic body, LCD for temperature, charge and status.

China Led High-Frequency. We Built One for India.

At the time, China led the world in high-frequency inverter technology. We set out to build one for India — compact transformer, low harmonics, bidirectional technology we filed a patent on. The engineering human story sits with CTO Sivarajan Ramachandran and the wider R&D team. First in India on that HF home-UPS path — not a sticker chase.

The 4 Stars Are Money Back on the Bill

For the first time in the Indian power-backup industry’s framing, a home UPS was efficient enough to earn four BEE stars — and we put the comparison on video against an ordinary inverter (tested on a 150Ah / 12V battery).

Su-Kam Falcon HBU High Backup UPS 1100/12V — How to Save Money product creative
Archive creative — Falcon HBU on the bill-savings story: How to Save Money?
Su-Kam Falcon HBU infographic — Install Lower Ah Battery, 25% savings in overall operational cost, Jumboz 100Ah
Archive creative — How to save money from your Inverter? Lower Ah battery + ~25% operational savings framing with Falcon HBU and Jumboz 100Ah.

Watch on YouTube — Normal Inverter vs Su-Kam Falcon HBU

What’s measured Ordinary inverter Falcon HBU
Grid draw to charge (180 W needed)~300 W~220 W
Daily charging energy (10 hrs)3.0 units/day2.2 units/day (−0.8)
Battery draw @ 100 W load129 W110 W
Battery draw @ 200 W load255 W210 W
Battery draw @ 500 W load560 W520 W
Backup @ 100 W13 h 15 m16 h 30 m (+3 h 15 m)
Backup @ 200 W7 h 32 m8 h 47 m (+1 h 15 m)
Backup @ 500 W3 h 15 m3 h 53 m (+38 m)
Units / year (charging frame)~1080~792

Less from the grid while charging. Less from the battery on load. About 25% lower running-cost framing in that video — and because conversion was so efficient, a 100Ah battery on Falcon could perform close to a 150Ah on an ordinary inverter. The stars were not décor. They were rupees.

Comparison chart — units consumed per year ordinary inverter vs Falcon HBU
From founder essay — annual units: ordinary inverter vs Falcon HBU (~1080 vs ~792).
Comparison — power drawn from mains while charging ordinary inverter vs Falcon HBU
From founder essay — mains charging draw: ~300 W ordinary vs ~220 W Falcon for the same charge need.
Comparison — battery draw under load ordinary inverter vs Falcon HBU
From founder essay — battery draw under load: Falcon pulls less for the same wattage.

Not Another Grey Metal Box

We moulded a heat-resistant plastic body — patented design, multiple colours — so the UPS could live on a wall, not hide in a corner. Rust-free, lighter, safer in a home. Features the channel sold on: lowest no-load current, auto temperature compensation, low harmonics, DT-6S six-stage charging, silent UPS switchover, Bluetooth / app monitoring on the intelligent SKUs.

YouTube thumbnail — Normal Inverter vs Su-Kam Falcon HBU comparison video
Product video still — the comparison that put ordinary inverter vs Falcon HBU numbers on screen.

We Failed Twice. Then We Built It for India.

Falcon HBU was the most ambitious product project of my life. We had tried high-frequency earlier and failed twice in the field. Rural Indian power is brutal — unstable frequency, wild voltage. HF designs are sensitive to exactly that. To hit BEE-grade numbers you needed HF; to survive India you needed toughness. The combination that finally worked — efficient enough for four stars, tough enough for erratic rural feed — is why I still call it a perfect product made in India.

I Fought for BEE Star-Rating

I was personally involved in the Bureau of Energy Efficiency committee working on inverter energy standards. I believed a mandatory efficiency standard would push the whole industry cleaner and save the country enormous electricity. The hard part: that mandatory inverter star standard still had not been implemented when I wrote the open case. Open letter to BEE — conservative national estimate on the order of ~11 billion units a year if efficient inverter (and matching battery) standards were made mandatory. Falcon showed it was possible years ago. The norm for every Indian home is still waiting.

What Press Put on Record

Energetica (22 July 2015) — 4-star from BEE; first inverter company; MD quote under my name. Energetica Falcon HBU, ELE Times, and Electronics Maker covered the intelligent home-UPS launch and the 4-star / efficiency framing. The 2015 Facebook scoreboard year sits on 2015: BEE + Discovery + six million.

What I Want on Record

Kunwer Sachdev — CEO & MD of Su-Kam. Built and launched Falcon HBU — high-frequency home UPS with BEE 4-star / ~90% efficiency framing (Energetica Jul 2015 first-company claim; Falcon launch press Mar 2016). Patented bidirectional HF path after two failed field attempts against rural power; plastic-body design; bill-savings comparison on video. Crusader for mandatory BEE inverter efficiency standards — still not implemented as of the founder essay. Full narrative: KunwerSachdev.com.

Verified Sources

Related

FAQ

What is Su-Kam Falcon HBU?

Falcon High Backup UPS — a high-frequency home UPS / inverter Su-Kam built under Kunwer Sachdev as CEO & MD. Trade press framed it as India’s intelligent home UPS with BEE 4-star / ~90% efficiency claims. Founder essay on KunwerSachdev.com details the HF path, bill savings and plastic-body design.

Was it really the first BEE 4-star inverter?

Energetica India (22 July 2015) reported Su-Kam received a 4-star rating for its high-frequency inverter from the Bureau of Energy Efficiency and was the first inverter company to receive the star rating from BEE, quoting Kunwer Sachdev as MD. Falcon HBU launch coverage (Energetica, ELE Times, Electronics Maker) repeats the 4-star / efficiency framing.

Why high-frequency — and why did earlier attempts fail?

Hitting BEE-grade efficiency in charging and inversion effectively required a high-frequency design. Two earlier HF attempts failed in the field because rural Indian power is erratic (frequency and voltage). Falcon HBU was the attempt that stayed efficient and survived those conditions — with bidirectional technology patented.

What do the bill-savings numbers claim?

The product comparison video (150Ah / 12V battery tests) shows lower grid draw while charging (~220 W vs ~300 W for 180 W needed), lower battery draw on load, longer backup (e.g. +3 h 15 m at 100 W), and ~792 vs ~1080 units/year — about 25% lower running cost framing, plus the option of a smaller battery.

Did Kunwer Sachdev push for a mandatory BEE inverter standard?

Yes. He describes personal involvement in the BEE committee on inverter energy standards and an open letter arguing mandatory efficiency (and battery) standards could save India ~11 billion units a year. He notes the mandatory inverter star standard still had not been implemented as of that essay.

Historical Documentation Notice:
This article documents historical innovations and installations executed under the leadership of Kunwer Sachdev during his tenure as Founder & Managing Director of Su-Kam Power Systems Ltd. (1988–2018). Kunwer Sachdev exited the company in 2019 under the IBC process and holds no association, affiliation, or liability with Su-Kam Power Systems Ltd. or its subsequent management.

Written in the name of Kunwer Sachdev, then MD and CEO of Su-Kam — the Solar Man of India. His passion was new projects, new technologies, and training people. Founder-era solar PCU, Direct-DC rural homes, and defence and state field projects (1988–2018). His solar blogs · KunwerSachdev.com

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About the Author

Kunwer Sachdev — Inverter Man of India and Solar Man of India

Kunwer Sachdev — the Solar Man of India and the Inverter Man of India. He was Founder, MD and CEO of Su-Kam (1988–2018). His passion was always new projects and new technologies, and training people to carry the work — from India’s solar PCU and home-lighting kits to Direct-DC rural homes and field projects such as UPNEDA, Tamil Nadu Green House, and Assam Rifles. He is named inventor on 106 technology filings. Today he writes this archive and mentors clean-energy and AI work, including Kunwwer.ai. Read more on the solar blog and his essays on KunwerSachdev.com.

Kunwer Sachdev exited Su-Kam in 2019 and is not responsible for any activity of the company since. Anyone dealing with Su-Kam does so solely with its current management. Full disclaimer →

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Kunwer Sachdev exited Su-Kam in 2019 and is not responsible for any activity of the company since. Anyone dealing with Su-Kam does so solely with its current management. Full disclaimer →