How much does ultrapure water add to an electronics plant's energy and emissions?
It adds electricity for pumps, reverse osmosis, electrodeionisation, UV and recirculation, which run all day. Sub meter the water plant if you can; otherwise estimate from motor ratings and hours and label it. It is usually a few percent of a fab's power but grows with recirculation loops.
Where the energy goes
- High pressure pumps for reverse osmosis.
- Electrodeionisation and UV units.
- Continuous recirculation to keep water pure.
- Wastewater treatment and reclaim.
How to measure
Sub meters on the water plant feeders give kWh directly. Multiply by the grid factor, and divide by cubic metres produced for a per unit figure.
Where to save
Variable speed pumps, higher water reclaim and right sized loops cut both water and kWh.
What Senseible does here
Senseible reads electricity bills into a dated, fingerprinted record per plant; for sites outside India the grid factor is entered from the official source and labelled.
Sources: GHG Protocol Corporate Standard, GHG Protocol Scope 2 Guidance
Last reviewed 2026-10-21.