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Assessors will need this consumption data to complete their audit for the ESOS assessment and submission to the appropriate regulator.

ESOS Phase One operated over a four-year period from December 2011 to December 2015. The second phase follows on from 6th December 2015 to 5th December 2019, which is the final deadline for submitting assessments.

Why prepare data now? Businesses should start collating and verifying this complex business-wide consumption data now, as it can take time. If there are failings, such as missing or unverified pieces of information and inaccuracies, there will probably be delays in the audit process. This was evident in phase one, where there was a major rush to complete ESOS assessments by the compliance deadline. Due to the limited number of qualified ESOS Lead Assessors and frequent examples of incomplete and insubstantial data, there were bottlenecks and many instances of compliance breaches.


The clock is ticking when it comes to

gathering the good quality data required to meet the legal requirements of ESOS Phase

Two, says Richard Smith, Director of Business Strategy for Inprova Energy.

The Energy Saving Opportunity Scheme (ESOS) is a mandatory energy assessment scheme that requires qualifying organisations to measure and report their total energy consumption and identify energy saving opportunities. It applies to large, mainly private sector businesses (with more than 250 employees, or a turnover of more than 50million Euros and a total balance sheet asset value of more than 43million Euros).

Smaller businesses may also qualify if they are part of a bigger group and one of their sister companies falls within the scheme's criteria. Those businesses that qualified for ESOS Phase One are likely to be required to take part once again, but they must use fresh data.

The importance of good quality data Good quality data is essential to ensure ESOS compliance. Participants must measure and record 100% of their energy consumption (including data from all buildings, processes and transport activities) for a continuous minimum 12-month period. This must include or span the qualification date of 31st December 2018. ESOS Lead


Failure to comply with ESOS risks fines of up to £50,000.

Businesses can start collecting ESOS data from 1st January 2018, which means that they should start putting the appropriate measures in place now to ensure verifiable data is managed and collated well.

Failure to comply with ESOS entails the risk of fines of up to £50,000, plus reputational damage as non-compliant firms are 'named and shamed'. The major benefit of early compliance, however, is that the sooner businesses complete their ESOS assessment, the sooner they will capitalise on cost savings opportunities from improved energy efficiency, which could result in cutting energy bills by as much as a fifth. Top tips for effective ESOS data collation

1. Ensure your data is verified – it must come from an original source, such as meter readings, delivery notes, mileage logs or supplier invoices. Estimates are also permitted, but these must be based upon verifiable data.

2. Don’t forget transport, which is one of the most difficult data recording areas. You must consider total fuel consumption, including your 'grey' fleet, and even count the UK segments of international road, rail, shipping or aviation journeys, for both goods and people.

3. Maintain regular consumption readings, watching out for fuel oil deliveries and tank volumes, in particular.

4. Maintain supplier invoices alongside your other consumption data so you can check and collate all your energy data.

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