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Energy Metering for Data Centres

PUE. Per-Rack Billing. COP Tracking. One Meter Family.

Class 0.5S energy meters and thermal meters engineered for Indian data centres — accurate enough for colocation billing and granular enough for PUE tracking and chiller optimisation. Deploy at the rack, PDU, UPS, chiller, or any point on your single-line diagram.

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Why data centres choose Tech OVN

Four reasons our meter stack fits the Indian data-centre profile — colo, hyperscaler, and enterprise on-prem alike.

Class 0.5S Colocation Billing

Class 0.5S per rack or per cage for accurate customer billing. Pulse outputs integrate with DCIM and billing systems. Split-core CTs clamp around live cables, so racks can be retrofitted without a shutdown of the circuit.

Separately Metered Subsystems

Meter the IT load, the cooling load and the facility auxiliaries independently — the split that PUE reporting and efficiency projects both depend on. See the data centre EMS page for meter placement and reporting categories.

Per-Subsystem Visibility

UPS efficiency, CRAC/chiller kW/TR, generator test runs, lighting, BMS. Every loss pathway becomes a data point — the measured data an ISO 50001 energy management system and an efficiency review both rely on.

High-Density & Hot-Aisle Ready

Titan is Class 0.5S, rated for −25°C to +70°C operation, and comes in a compact DIN-rail housing (94 × 89 × 69 mm) — fits inside PDU cabinets and switchboards without bespoke mounting.

The data-centre stack

From utility incomer to the fire pump — the meters most Indian data centres deploy.

Main Incomer & UPS Output

One Titan on each utility incomer, and one on each UPS input and output. Gives you utility-fed load vs protected load, and the efficiency (output ÷ input) and losses of each UPS.

PDU & Rack-Level Metering

Titan on each PDU or per-rack feed. Feeds colocation billing and DCIM. Harmonic logging flags transformer heating before the alarm fires.

Cooling Plant — Chillers, CRACs, CRAHs

Titan Plus BTU on chilled-water loops for kW/TR and COP trending. Titan on CRAC/CRAH feeders for airflow-vs-power correlation.

Ancillaries & Fire Pumps

Titan Compliance on electric fire-pump feeders logs every test run automatically, replacing the paper logbook. Titan on lighting, BMS, and generator feeders closes the loop.

PUE, COP, and the numbers that matter

Data-centre efficiency boils down to two ratios: PUE (total facility power ÷ IT power) and chiller COP (cooling delivered ÷ electrical input). Both require continuous, synchronous measurement — snapshot readings from clamp-on audits are close to useless because the values drift hourly with ambient, IT load, and UPS configuration.

Our typical DC deployment: Titan on the utility incomer, UPS inputs and outputs, and each PDU. Titan Plus BTU on the chilled-water loops for COP. Titan on every CRAC/CRAH feeder for airflow-per-watt. Data flows to our Energy Management System or directly into your DCIM via Modbus TCP / MQTT / BACnet.

For colocation operators, the same Titan can also be the billing meter — Class 0.5S accuracy, and pulse outputs integrate with the colo billing platform. One meter family covers internal efficiency tracking AND customer billing, which is what operators typically end up wanting anyway.

Frequently asked questions

Six questions DC facility managers and colocation operators ask before spec.

PUE (Power Usage Effectiveness) = Total Facility Energy / IT Equipment Energy. You need two continuous measurements: (1) total facility kWh at the utility incomer, (2) IT kWh — ideally at the UPS output or PDU inputs. Divide (1) by (2). Lower is better, and a value of 1.0 would mean every kWh goes to IT. Our meters feed both measurements to the platform, which calculates hourly and monthly PUE.
A Class 0.5S per-rack or per-cage meter — Tech OVN Titan fits both. Titan is designed to Class 0.5S (IEC 62053-22), ±0.5% accuracy — check the class your colocation contracts specify. With split-core CTs you can retrofit live racks without cutover. Pulse output + Modbus TCP + MQTT mean you can feed the colo billing system and the DCIM at the same time, without separate meters.
Yes if you care about PUE or want to optimise the cooling plant. A single incomer meter gives you total facility load but tells you nothing about where the inefficiency sits. Sub-meter the chiller plant, the CRAC/CRAH feeders, the UPS input and output, and you can see: utility-to-UPS losses, UPS-to-IT delivery efficiency, cooling overhead per IT kW, and seasonal drift.
Yes, over open protocols. Every Titan has Modbus TCP, BACnet/IP, MQTT and a REST API on the Ethernet/WiFi side, and an RS485 port that runs one role at a time (Modbus RTU slave, Modbus RTU master or BACnet MS/TP). Any DCIM that can poll Modbus or BACnet, or subscribe to MQTT, can read Titan directly — no gateway hardware.
Titan Plus BTU measures chilled-water thermal flow (cooling kW) AND the chiller's electrical input (kW) in one device, so kW/TR and COP compute on-device. You see efficiency degradation within days instead of discovering it during the annual audit. As a worked example: a 500 TR plant delivers about 1,760 kW of cooling; at a COP of 5 the chillers draw about 350 kW. A 1% COP improvement cuts that by about 3.5 kW, or roughly 30,500 kWh a year if the plant runs at that load around the clock — about ₹2.7 lakh a year at ₹9/kWh. Scale it to your own load, hours and tariff.
Fire-pump testing is set by your fire authority, your insurer and the standard your fire system was designed to (often NFPA 25 for inspection and testing) — not by Uptime Tier certification. Whatever the schedule, the test runs need documented results, and most data centres still keep them in manual logbooks. Titan Compliance monitors an electric fire pump's feeder continuously, logs every run with duration and electrical parameters, alerts the facility manager on missed tests, and produces a report for the inspector.

Related products & solutions

The hardware and tools data-centre teams typically spec together.

Titan — 3-Phase Smart Energy Meter

The core Class 0.5S meter — PDU, UPS, rack, and incomer deployments.

Learn More →

Titan Plus BTU — Energy & Thermal

Chiller-loop thermal + electrical metering in one device. Continuous kW/TR and COP.

Learn More →

Titan Compliance — Fire Pump Monitor

Automatic fire-pump test logging and missed-test warnings.

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Chiller COP Calculator

Calculate COP from cooling kW and electrical kW. Benchmark against ECBC / ASHRAE.

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Energy Management System for Data Centres

Real-time PUE, rack-level submetering for colocation billing, UPS/DG/grid redundancy validation.

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Energy Meter Sizing Calculator

Work out CT rating and meter count for your PDU layout and UPS configuration.

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Ready for a PUE dashboard you can actually trust?

Share your single-line diagram and we'll specify the meter plan — incomer to rack — within 48 hours.

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