After you have completed one or more implementations, you may calculate the electricity savings and/or gas savings (energy savings) and corresponding ESCs that result from the implementation(s) of your calculation method. This involves the following two step process:

Step 1: Calculate your energy savings for all of the implementations from which you wish to register ESCs

Your Accreditation Notice sets out which calculation method you are permitted to use, and any conditions which apply to the use of that calculation method. You must ensure that you:

  • Meet all the requirements of the ESS Rule for using that calculation method, and
  • Comply with your conditions of accreditation (these are mainly set out in the Accreditation Notice but may also include conditions advised, in writing, by the Scheme Administrator).

Further information on each calculation method is set out in the relevant Method Guide.

Step 2: Convert the energy savings for an implementation or from a pool of implementations to ESCs

Once you have calculated the electricity and gas savings, you determine the number of ESCs which can be created by applying the relevant certificate conversion factor in accordance with Equation 1 of the ESS Rule.

Please note the following:

  • The certificate conversion factor for Electricity Savings is different to the conversion factor for Gas Savings
  • The number of ESCs you create must be rounded down to the nearest ESC. However, you may pool implementations together to avoid rounding for each implementation.
  • While you may calculate the number of ESCs yourself, this step is performed automatically by TESSA using the energy savings for each implementation (as calculated in Step 1). For more information, see Registering certificates.