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Energy Audit
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Energy Audit · Efficiency & Compliance

Find the energy you are paying for but not using

Somewhere between the meter and the machine, plants lose energy - in compressed air leaks, oversized motors, idling loads, heat that goes up the stack. An energy audit measures where, quantifies what it costs, and hands you a savings roadmap ranked by payback. Where energy-conservation law designates large consumers, it is also a statutory obligation.

You need Energy Audit if…

  • !Power and fuel costs are rising faster than output, and nobody can say which line, load or shift is responsible.
  • !Your organisation is a designated consumer under energy-conservation law and a periodic audit is mandated.
  • !A corporate buyer’s sustainability questionnaire asks for energy intensity data you do not have.
  • !You are planning ISO 50001 and need the baseline review an energy management system starts from.
  • !Emissions reporting or a decarbonisation target needs verified consumption data, not utility-bill guesses.
  • !A new plant, line or utility contract is being sized and the load data is a decade old.
What it is

A measured, instrumented study of where energy enters, moves and leaks out of your operation - electrical systems, thermal systems, utilities and buildings - ending in a quantified savings roadmap.

Who issues it

SIS energy auditors issue the audit report. Where a statutory scheme applies, the audit is aligned to the format the regulator expects.

Validity

Per audit cycle - statutory schemes typically mandate a fixed periodicity; voluntary audits repeat as the roadmap is executed.

Who gets asked for it

Manufacturing plants, process industries, utilities, large commercial buildings and any organisation with an energy bill big enough to attack.

8of 25 industries

Where this certification is demanded

Energy Audit is applicable across 8 of the 25 industries SIS covers. The pages below set out the specific reason it comes up in each one.

Manufacturing IndustriesEnergy IndustryChemical IndustryTextile IndustryOil and Gas IndustrySolar Industry+2 more

What Energy Audit Actually Requires

The backbone an implementer has to build, in the order it usually gets built.

1
Energy accounting

Consumption mapped by source, area and significant load - metered where possible, estimated honestly where not.

2
Electrical system review

Motors, drives, transformers, power factor, harmonics and tariff structure against actual load profiles.

3
Thermal system review

Boilers, furnaces, steam distribution, insulation and waste-heat streams - combustion efficiency measured, not assumed.

4
Utility systems

Compressed air, chillers, pumps, fans and lighting - the quiet consumers where most quick wins live.

5
Savings quantification

Each measure costed with investment, saving and payback - a bankable list, not a slideware wish list.

6
Monitoring baseline

The metering and indicators to prove savings actually landed - and the natural feed into ISO 50001 if you take it further.

How Energy Audit Process Works

No black box. A defined, time-bound route from first call to savings roadmap in hand.

Preliminary Review

Bills, load data, process flow and past studies. The significant energy uses are shortlisted and the measurement plan agreed.

2–3 days

Measurement & Site Study

Instrumented measurement across shifts - loads, combustion, air leaks, thermography where useful - plus operating-practice observation.

3–10 days

Analysis & Roadmap

Findings quantified into no-cost, low-cost and investment measures, each with saving and payback, ranked for execution.

1–2 weeks

Report & Review

Report presented to management and, where statutory, formatted for the regulator. A follow-up review checks savings realisation.

scheduled
Most plants find the first 5–10% of savings in measures that pay back within a year - the audit usually funds itself before the report is bound.

Industries That Need Energy Audit

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Manufacturing Industries
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Why it applies hereEnergy is often a top-three manufacturing cost, and the losses hide in compressed air, idling loads and heat. The audit measures them line by line and returns a payback-ranked savings roadmap - plus statutory compliance where the plant is a designated consumer.Typical trigger: Power costs per unit of output are climbing, or a mandated periodic energy audit is due.
Energy Industry
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Why it applies hereGenerators and utilities are judged on heat rate and auxiliary consumption - percentages worth crores. The audit benchmarks units, quantifies auxiliary losses and supports the efficiency targets regulators track.Typical trigger: Heat-rate deterioration or an efficiency directive has put unit performance under scrutiny.
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Chemical Industry
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Why it applies hereProcess heat dominates chemical energy bills; steam systems and furnaces hide the biggest recoverable losses. The instrumented audit measures combustion, insulation and heat-integration opportunities.Typical trigger: Fuel costs are squeezing margins, or the energy-conservation regulator has designated the site.
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Textile Industry
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Why it applies hereSpinning and processing are power- and steam-intensive with thin margins - efficiency is bought or lost in humidification plants, compressors and boilers. The audit finds the recoverable share and its payback.Typical trigger: Energy cost per kg of yarn or fabric has crossed benchmark, or a buyer sustainability programme requires energy data.
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Oil and Gas Industry
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Why it applies hereRefineries and gas processing are among the largest designated consumers, with furnace efficiency and flare losses as standing audit targets. The audit quantifies both against statutory benchmarks.Typical trigger: The mandated audit cycle is due, or fuel-and-loss numbers are drifting from target.
☀️
Solar Industry
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Why it applies hereGeneration-side efficiency is the product: PR ratios, inverter losses, soiling and auxiliary consumption decide plant economics. The audit verifies where generation is being lost against design.Typical trigger: Plant PR is below projection and the lenders or owners want an independent loss analysis.
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Construction Industry
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Why it applies hereBuildings are audited twice: once against efficiency codes at design and again in operation, where HVAC and lighting drift from spec. The audit verifies both and feeds green-building ratings.Typical trigger: A code compliance check, green-building certification or tenant energy programme needs measured data.
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Railways
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Why it applies hereTraction and non-traction energy are enormous line items with published efficiency mandates. Audits of depots, stations and traction substations find the recoverable share and evidence the mandate.Typical trigger: An energy-efficiency directive or rising traction bills have put consumption under formal review.

Commonly taken alongside

The audit finds the savings; ISO 50001 is the management system that keeps finding them year after year; ISO 14064 turns the energy data into a verifiable emissions inventory.

Not Sure Which Certification You Need?

Three questions. The selector reads the same industry-to-standard mapping this whole site is built on, then shortlists what applies to you.

Question 1 of 3

Which sector best describes your organisation?

Your cheapest megawatt is the one you stop wasting

New capacity costs capital. Recovered waste costs an audit. Send us last month’s energy bill profile and we will tell you what the study would cost against what it typically finds.

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What Energy Audit Changes for Your Business

Certification is not a certificate on the wall. It is a working system that pays for itself.

💸

A costed savings roadmap

Not “consider efficiency improvements” - a ranked list with investment, annual saving and payback per measure.

📊

Consumption you can finally see

Energy accounted by line, load and shift. Waste stops hiding in the monthly utility total.

🏛️

Statutory obligations closed

Where energy-conservation law designates your organisation, the mandated audit is done, formatted and filed properly.

🌱

ESG numbers with evidence

Energy intensity and reduction claims backed by measurement - the difference between a sustainability report and a marketing page.

🔌

Right-sized assets and tariffs

Oversized motors, wrong tariff categories and poor power factor surface immediately - the cheapest corrections in the plant.

🎯

The runway to ISO 50001

The audit is the energy review an ISO 50001 system is built on - do it once, use it twice.

Knowledge Base - Downloads

Practical documents prepared by our auditors. Fill the short form once and every download on the page unlocks.

CHECKLIST

Pre-audit data checklist

The bills, single-line diagrams, load lists and production data to gather before the audit team arrives - halves the study time.

CALCULATOR

Quick savings estimator

Rule-of-thumb savings for the ten most common measures - compressed air leaks to power factor - to size the prize before auditing.

TEMPLATE

Energy accounting workbook

A structure for source-wise, area-wise energy accounting that grows into an ISO 50001 baseline.

GUIDE

From energy audit to ISO 50001

How the audit’s energy review, baseline and indicators map directly onto the clauses of an energy management system.

🔒 Documents are locked. Fill the form once to unlock every download.

Frequently Asked Questions

Straight answers to what buyers ask before they commit to Energy Audit.

Is an energy audit mandatory for us?
If energy-conservation law designates your organisation - typically by sector and consumption threshold - a periodic audit is a statutory duty. Below the threshold it is voluntary, and usually still pays for itself.
How disruptive is the measurement work?
Minimal. Measurements are taken on running plant across normal shifts - the point is to see the operation as it actually runs, not a staged version.
What savings should we expect?
The honest answer is: what the measurements show. As a pattern, most first-time audits identify measures worth 5–15% of the bill, with the first tranche paying back inside a year.
Do we need this if we already have ISO 50001?
ISO 50001 requires an energy review - a periodic independent audit is the strongest way to run it, and keeps the system’s savings claims honest.
What instruments are used?
Power analysers, flue-gas analysers, ultrasonic leak detection, flow and temperature measurement and thermography as the scope requires - measurement, not estimation, is the point of the exercise.
Who sees the report?
You - and, where a statutory scheme applies, the regulator in the mandated format. Findings are otherwise confidential like every SIS engagement.
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