What we do


PES conduct a reveres auction based on tender criteria established with the client to ensure that a competitive and fair tender delivers the right energy contract for your business.

There are many different types of energy contract available to businesses across the UK.


PES will establish the requirements of the client to best match the product type to suite the requirements of the client these will range from fully fixed products to flexibly bought energy.


Fixed Contracts

A fixed contract is a traditional contract that allows you to fix all your energy charges for long-term contracts that secure all of your commodity and non-commodity costs. Depending on the type of fixed contract you opt for (please refer to our third part charges document).



  • Budget certainty

  • Protection against third-party costs

  • Protection against large market swings

  • Simple billing

  • Less management time needed


 Flexible Contracts

A Flexible contract enables you to make more than one buying decision in your contract, allowing you to manage your market position actively and take advantage of any downward trends in the market.                                                                                             


  • Multiple buying opportunities

  • Greater transparency

  • The possibility of selling back

  • Take advantage of a falling market

  • Ability to re-forecast volume

                                 Comparing & Evaluating


Our tender process is a transparent process designed to provide you with valuable information to assist you with your business decisions.


PES understand the importance of understanding the context and terms of the suppliers bidding for your business this is why our reports are comprised of 4 main information areas:

Market Participation

Tender Summary

Detailed Analysis 

Results & Context 

Carbon Service



ESOS is the UK’s legislation for meeting the EU Energy Efficiency Directive Article 8. ESOS came into force on 17 July 2014. 

This regulation mandates that “large undertakings’ must produce an energy audit of their entire operation’s energy consumption every four years. The first report must be lodged with the Environment Agency by 5 December 2023.

A ‘large undertaking’ is defined as one with 250 or more employees. Businesses with fewer employees but  with a large financial profile are also included, as are members of groups where  another member meets the definition. Corporate bodies and partnerships, and also any unincorporated body that is conducting trade whether for profit or otherwise, are all subject to ESOS. Public sector organisations are not subject  to ESOS although some universities with significant private funding may well be.


The UK Energy Industry widely is regarded as the one of the most pioneering and technologically advanced industries in the world and is the very reason that a lot of participants are foreign owned. The secondary effect of the fast rate of new technology and systems within this industry also requires constant changes from the legislature. 


Forensic Bill Validation


A recent study of the UK energy market revealed that as many as one in five energy invoices are incorrect.


PES pride themselves on offering an unrivalled bureau service that uses our inhouse coded e billing systems to automatically scan your business energy invoices, identify anomalies and provide a report to your billing and operations contact who will challenge the suppliers on your behalf.


Every six months you will be provided with a validation report detailing how much energy and money has been successfully contested.

The validation system scans over 72 billing elements and also measures unusual consumption's via interval data from the meters as well as typical usage patterns.


These algorithms ensure that your billing is consistently managed and bring you piece of mind as to the accuracy of your invoicing.  

Do you know what makes up your electricity price?

With the cost of energy only making up 40% of your unit rate it is more important than ever to have a trusted partner guide you through the complex myriad of charges and ensure that these are applied correctly in your billing.











What are the other charges?




These are all made up of network charges and subsidies for cleaner generation and the cost breakdown is typically as per below:

Our forensic bill analysis and validation will check all of these factors and dispute any that do not conform to expectations or published tariffs.


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