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Guide / Energy audit calculator

Check how your site controls energy

Book a free energy review

Your operational energy check

Work through one site at a time. No contact details are needed and no information is sent to Omnium unless you choose to make an enquiry afterwards.

Step 1 of 8

Your site

Which description is closest to this site?

Optional figures

Enter annual billed use and floor area if known. These figures show your own energy intensity only. They are not compared with a sector benchmark.

How the score works

The 100 points, split across five areas.

A yes receives the available points, partly receives half, and no or I don’t know receives none.
Measurement and records
20 points
Access to interval data and invoice checks against readings and contract terms.
Out-of-hours control
20 points
Understanding closed-site load and using a documented shutdown routine.
Heating, cooling and lighting
25 points
Occupied-hour schedules, controlled settings and reliable lighting controls.
Equipment and maintenance
15 points
A current plant list and planned maintenance of principal equipment.
Management and follow-through
20 points
Named responsibility, regular review and one action record.

What to gather for a fuller review

The calculator can screen operating practice. A proper audit needs the records that show what the site actually did.

A complete recent invoice

One for each electricity and gas meter, including all charge lines and supply identifiers.

Twelve months of meter data

Half-hourly, interval or AMR data where available, with missing and estimated periods identified.

Operating information

Opening hours, shifts, occupancy changes and processes that explain when energy should be used.

Plant and control details

Heating, cooling, ventilation, lighting and process equipment, including schedules and settings.

What a commercial audit examines

Questions about the calculator

No. The score is an operational screening result based only on the answers you enter. It is not an EPC, Display Energy Certificate, ESOS assessment or statutory audit.

No. A credible saving needs your meter data, operating pattern, contract rates and evidence of the measure being considered. This calculator identifies checks rather than inventing a saving.

Your answers stay in this browser session so you can refresh without immediately losing progress. They are not sent to Omnium unless you separately use the enquiry form.

You can complete the operational questions without documents. A full recent invoice, twelve months of meter data, floor area, opening hours and a plant list make the result more useful and are the starting point for a proper review.

It measures the controls and evidence you say are in place across records, out-of-hours use, heating and lighting controls, equipment maintenance and management follow-through. The category weights are shown in the result.

Choose I don’t know. It earns no evidence points, but the result describes it as something to check rather than treating it as a confirmed failure.

Proof

What we have delivered, and who checks our work.

Each figure below is taken from our evidence record and has a full case study behind it.

  1. £206,000a year saved on procurement

    Read the case study: Michels and Taylor

  2. £161,000a year saved on gas, about £483,000 across a three-year term

    Read the case study: Broadening Choices for Older People

  3. Group rates10 per centlower than the previous brokered prices

    Read the case study: Roam

Checkable with the issuing body

All case studiesThe full evidence record