Civil engineering Management & Consultancy



CO2 performance ladder

Our company actively works on reducing its CO2 emissions. The CO2 performance ladder is a standard that encourages companies to act in a CO2-aware manner in their own business operations and when implementing projects. This mainly concerns saving energy, making efficient use of materials and using increasingly sustainable materials. We regard the CO2 performance ladder as being the best way of charting our CO2 footprint, working on reducing emissions and taking an active approach to this with all those around us.

o CO2-bewust certificaat niveau 5

A. Insight

It all starts with gaining a clear understanding of the existing CO2 emission. We have developed an emission inventory sheet in which our CO2 footprint is measured and can be presented to you for viewing.

o Emission inventory 1st half of 2014
o Emission inventory 2nd half of 2014
o Emission inventory 1st half of 2015
o Emission inventory 2nd half of 2015
o Chain analysis upgrading agricultural roads

B. Reduction

Based on the insights set out under A., the emission inventories, we as a company have formulated a number of targets. We are working actively on these to reduce our CO2 footprint.

o Energie management action plan 2016

C. Communication

We will be keeping you up-to-date with our CO2 performance on our website. We have also set up an internal communication structure in which we describe our internal and external communications. If you have any questions, comments or ideas about our CO2 performance, please feel free to contact us using our contact form.

D. Participation

We work on sustainable initiatives or participations in our business operations and our projects. A selection of these initiatives and participations is set out below.

Initiatives en participations

The engineering and building of a lock was put out to public tender. The work was awarded to the tendering party with the "most economically advantageous tender". The MEAT score is determined not only on the basis of the tender sum but also on the tenderer's rung on the CO2 performance ladder and the power consumption of the lock in the usage phase. The lock contains a number of systems that consume energy when used, such as for opening and closing the doors. It is important to minimise the energy costs during the usage phase (at least 50 years) so that the manager's costs are kept as low as possible. During the tendering procedure the scores for price, building time and rung on the CO2 performance ladder were so close that the score for the energy consumption determined the best MEAT score. The winning tenderer submitted a plan in which the system for closing the lock doors in a controlled manner in the event of an emergency inlet was disconnected from the system for opening and closing the doors in normal situations. This made it possible to make the system lighter and more efficient, which achieved a substantial energy saving compared to a traditional solution. InVra plus oversaw this tendering procedure on the client's behalf and proposed adding in addition to the CO2 performance ladder another criterion in the area of sustainability to gain an award advantage.

InVra plus is looking into the options for an energy landscape in a certain location. The possibilities for generating and storing green electricity based on a subsurface seawater reserve were looked into last year. InVra plus is the conceiver and leader of this plan. We are currently conducting a study into the economic feasibility of this plan.


In the context of the redevelopment of a city centre consideration was given to renewing the public lighting and making it more sustainable. This led to the following measures being put in place:

- Old masts replaced with masts with LED lighting

- Fewer new masts positioned but with more lighting output

- Use made of an outdoor lamp controller (OLC)

- A direct voltage network installed.

This was initiated by InVra plus. The maximum anticipated saving is 8,491 kWh.

Light-reflecting stones were chosen as a solution for the realisation of a temporary road rather than the standard temporary lighting. Because the road is close to a Natura 2000 area it will probably be necessary to use adapted lighting. InVra plus came up with the idea of using reflexstones. Using these reflecting stones sufficiently marks the side of the road, which does away with the need for lighting. The reduction involves delivering, installing and using 10 lighting masts (including the cabling).

BCTR inititative

BCTR stands for Bitumen Cement Treated Renewables and is used as a substratum in road constructions. Bitumen, cement mixtures, slag (or other renewable/secondary building materials), sand and filler are mixed together which creates a high quality building material that is slightly elastic and malleable, a product that is not constantly bound. The sustainability benefit of BCTR is that use is made of secondary building materials and/or waste materials in order to achieve savings on primary building materials. BCTR is produced using foam bitumen and is mixed at low temperatures. The benefits of BCTR are as follows:

- Reduced use of primary raw materials

- Optimum recycling of secondary building materials

- Mixed at low temperatures

- Small mobile installation with high capacity

- Product is reusable

- Limitation of traffic movements

- Low CO2 footprint

InVra plus initiated the development of this product.




Main menu