Back to all postsCase Study

Case study: how a 12-plant manufacturer cut energy spend 27%

AArjun RaoSolutions Lead 19 Apr 2026 7 min read

The company ran twelve manufacturing plants across four states. Each plant reported energy data differently — some monthly, some quarterly, some not at all. No one in the head office could answer a simple question: which plant is our least efficient, and why?

The starting point

  • 12 plants, 4 states, zero unified visibility.
  • Energy reporting stitched together from spreadsheets, weeks out of date.
  • Annual energy spend of ₹25 crore — and no idea where the waste was.

What changed

Within six weeks, every plant was reporting into one normalized data layer. The intelligence engine immediately flagged three high-impact issues: overnight HVAC at the Pune plant, a fleet of aging chillers in Bengaluru, and avoidable peak-hour load at two sites.

For the first time we could rank our plants by efficiency. The worst one was not the one we assumed.

Group Head of Operations

The result

Twelve months later, energy spend was down 27% — ₹6.8 crore in annual savings — with carbon emissions down a comparable margin. The single largest contributor was not new equipment. It was finally knowing what the existing equipment was doing.

A
Written by Arjun Rao
Solutions Lead, HESEOS

See your own energy story.

Estimate your footprint and savings potential with the HESEOS Carbon Calculator.

Launch Carbon Calculator