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What percentage of savings can I save compared to the investment?

This, of course, depends on the current facilities, their current state, and the energy saving measures that can be proposed. We usually save between 18 and 30 percent.

In order to guarantee savings, it is recommended that the operation and maintenance of these installations be entrusted to ESCO (ENGIE). However, note that even without this investment, a reduction in energy consumption is possible thanks to an optimised management of the installation.

What percentage of savings can I save compared to the investment?

You own the installation from the date of provisional acceptance.

How are the payments organised?

The remuneration for benefits is divided in three parts:

  • The installation:
    • If funded via the ESCO (ENGIE), a monthly payment plan is established when signing the contract.
    • If you finance the installation, the payment is done at once after receipt of the invoice established at the time of provisional acceptance (standard payment terms).
  • Annual operating, maintenance and total warranty costs are subdivided into monthly installments. These amounts also cover the design and the guarantee of comfort and performance.
  • Where appropriate, an annual bonus-malus bonus calculated at the end of each settlement period and based on the achieved energy savings.

How do we monitor / control consumption?

We use a standardised measurement method, inspired by the IPMVP (International Performance Measurement and Verification Protocol) method, which is more expensive and more complex. This is intended to improve performance when processes are not too complex.

The rules of this measurement method are determined at the beginning of the contract and the measurements are communicated to the customer in the meantime.

In order to actively ensure performance, we set up a suitable digital monitoring system for performance when the EPC starts. Where necessary, we install an energy monitoring system to help us monitor consumption very closely and take corrective measures. Where necessary (and with your approval), we also install sub-meters.

Is there an external and impartial control carried out?

We work with a standardised measurement method (please see the question above). Thus, we can measure the reference consumption and compare it with the measured consumption to calculate the bonus-malus objectively. Since the rules of this measurement method are set at the beginning of the contract and the measurements are communicated to you in the meantime, it is not necessary to designate an external part for this calculation.

How does the bonus-malus work? When and how will it be settled and paid?

When contracting an EPC, ENGIE undertakes to respect a maximum level of consumption (kWh). Positive and negative relative differences can be determined on the guarantee of energy savings (10% for example). The bonus-penalty sharing rules are clearly defined in the contract (ex: 100% penalty - 50% bonus).

At the end of each period, the final bonus-malus relative to the energy saving benefits of the year is calculated:

  • -If the result is in the gap defined in the contract, the goal is reached.
  • -If the target is exceeded, the bonus applies (e.g.: 50%) on additional energy savings and is charged by the ESCO (ENGIE) to you.
  • -If the target is not achieved: the penalty applies (e.g.: 100%) on the unrealised energy savings and is paid by the ESCO (ENGIE) to you.