Understand your obligations and avoid penalties

Using our latest technologies, in heat meters, water meters, heat cost allocators, data collection, we not only allow you to visualise your energy or that of your tenants but also use this data to meet increasing complex government and environmental energy reporting. Whether consumption or carbon, ista has solutions to meet the requirements. Our portals and central data systems gives you a single platform to consolidate your reporting and when required audit for completeness and accuracy.

Our solutions avoids delays and ensures you are well positioned to meet your obligations and avoid non-compliance issues, costs and repetitional damages.

Energy Saving Opportunity Scheme (ESOS)

What is ESOS?

ESOS is new EU legislation which requires member states to introduce a mandatory programme of energy audits for ‘large enterprises’. This means over 9000 of Britain’s biggest companies will be required to comply.

Under ESOS, all large companies must undertake an energy audit conducted or overseen by an accredited Lead Assessor. Audits will include an estimate of total energy consumption, covering buildings, industrial processes, and transport, and identify energy saving opportunities The audit must be signed off by a board-level director before being submitted to the Environment Agency.

ista can provide your organisation with complete ESOS compliance

  • Provide your organisation access to our accredited ESOS Lead Assessors to guide you through the process
  • Maintain a full understanding of how ESOS applies to your organisation and inform of any changes to the legislation that would affect the content or delivery of ESOS
  • Collate data for building, transport and process energy use
  • Review your portfolio to determine the number of energy surveys required
  • Carry out energy surveys following BRE guidelines
  • Produce survey reports including cost-effective energy efficiency recommendations
  • Preparation of Submission Document and Evidence Pack including sign-off by an accredited ESOS Lead Assessor

Streamlined Energy Carbon Reporting (SECR) Scheme

What is SECR?

SECR is the mandatory annual carbon emissions reporting scheme that has replaced CRC. If you meet 2 or more of the core criteria below you cannot complete your Annual Directors report without SECR being included.

  1. > 250 employees
  2. > £36m Annual Turnover
  3. > £18m Balance Sheet


The Financial Reporting Council is responsible for monitoring compliance and has the power to process non-compliance through the courts, impose civil penalties and take action against Directors.


Why use ista for your SECR Reporting Requirements?

Meeting the legislative requirements of the SECR can be time consuming and, at times, confusing. ista's background in compliance, metering and monitoring has ensured that long established processes are in place to provide your organisation a complete SECR solution. ista's expert team will support you in relating the rules to your organisation and understanding the implications of deadlines and penalties.

  • ista has guided clients through the CRC process since 2010 and has been supporting SECR clients since it started 1st April 2019
  • ista has a 100% success rate for external government audit of our clients in CRC, ESOS and will look to continue this for SECR
  • ista assists clients with their Net Zero and sustainability strategies
  • ista possess powerful, established, metering invoice and carbon reporting systems


Outline of the ista SECR Consultancy Service

  • We will help you determine what your organisation wants to gain from the process and devise a bespoke strategy to help you get there
  • Our expert teams analyse and collate the data to ensure correct emissions are reported
  • ista will complete your SECR reporting
  • ista will manage the required SECR evidence pack
  • ista will provide the SECR Auditors with complete and transparent evidence of compliance

Heat Network Metering & Billing Regulations

How does this effect you as a landlord or management company?

New UK regulations came into force in December 2014 and effect a large number of landlords and property owners. This is part of a wider European Energy Directive looking at enabling end tenants to reduce their heating costs.

If one of your properties has a central boiler and you charge two or more tenants for the heat and hot water then you are obligated to comply to the regulations.  The regulations define you as a 'heat supplier'.  ista can help you understand what this means and what you need to do to be compliant with the law.  

In simple terms you have three issues to address.


First, each heat supplier must register the National Measurement Office (NMO) before the end of 2015 (this is an amended date from the original 15th April 2015) of the location, size and supply details of existing buildings.  Each building needs to be identified, along with the number of customers and how these tenants receive information or are billed.  This web link contains detailed guidance and a notifications template for this registration.


For schemes with multiple buildings a heat meter is required to be installed at the incoming heat entry to each building. These 'bulk meters' must be in place by the 30th April 2015.

For each tenant or customers within the building the landlord must evaluate the feasibility of installing end tenant meters or heat cost allocators (radiator meters).  However the government has suspended its evaluation tool (July 2015) to assess each building, available at this link.  A new tool is to be provided.  It should be noted at this time the deadline for assessment hasn't been changed.  As the heat supplier you need to complete a building survey and if it is found feasible then the meters must be installed by December 2016.

If it not feasible the landlord can opt not to install meters.  However they should balance this against the other benefits that meters provide.  

  • tenants pay for what they use
  • landlords recover all of their energy costs
  • tenants can use the meter data to reduce energy costs
  • the regulations allow for metering and billing costs to be charged to the tenants

If your feasibility report confirms that meters are not viable for your property you will have to remember to update your survey every four years; as energy prices and meter costs change.


End customers must be billed using actual meter readings. This provides customers with transparency in consumption to reduce energy, whilst paying for only what they are using.  We have many studies that shows the benefits of metering to tenants reduces consumption and costs by up to 20%.  

Contact us to find out more

The Officers' Mess
Royston Road
CB22 4QH

+44 (0) 1223 874 974