Interventions on environmental externalities:


Implementation of measures for lighting flows regulation according to the infrastructure needs and the complementary use of LED technology (Ascendi is a pioneer in Portugal on installing LED technology in motorway Interchanges);


  • Monitoring of infrastructures under construction or built
  • Conduct environmental impact studies (EIS) in all built infrastructures

In order to ensure the alignment of the subcontractors’ activities with Ascendi’s environmental standards, the specifications include environmental issues and the document ‘Best practices on site’ was drawn up.

Environmental management on Site Award - The aim of this campaign is to reward best practices through an award scheme for environmental management performance by assessing:

  •  Response times to Ascendi’s requests;
  • Waste recovery;
  • Skills of the professionals involved;
  • Use of best environmental practices;
  • Implementation of self-control systems;
  •  Precision and team performance.

Resource consumption and waste management

Waste is managed in compliance with the national legislation in force and based on the assumption that all waste is sent for recovery, thus reducing the negative impact it may have on the environment. In 2022, Ascendi produced 1.049 tonnes of waste, of which 95% was non-hazardous and 88% was recovered.

Waste management by subcontractors is important to Ascendi, which is why it invests in awareness-raising and training as a means of ensuring that the procedures adopted are in line with its standards. Subcontractors generated a total of 226.615 tonnes of waste in 2022, of which almost 100% was non-hazardous and 100% was recovered.

Waste Recovery

Ascendi’s objective is to increase the reuse of waste that can be recovered within its infrastructures, by incorporating milled waste in the new bituminous mixes to be applied in future repaving, thus promoting the circularity of the materials.

Waste producedt8089352.2131.049
Hazardous wastet2671051
Non-hazardous wastet7819282.203998
Recovered waste15886791.789919

Water Resources

Considering the importance of reducing water consumption as an effective way of managingresource consumption, Ascendi ensures compliance with the legislation in force in all its operations and promotes various initiatives. Water consumption in 2022 was 12.290 m3, down 4% from the previous year (11.759 m3). This incentive for the responsible, sustainable use of water resources will continue in 2022.

Other initiatives:

  • Monitoring of sensitive areas;
  • Installation of tailing ponds, with macrophyte beds, constituting a "naturalised" system that is very efficient in capturing pollutants transported in dissolved state or in fine particles, which is a pioneering system in Portugal.
Ambiente - Recursos Hídricos

Noise Pollution;

In infrastructure management, noise is a very sensitive environmental issue, which is why regular monitoring is carried out at locations considered sensitive recipients, those that are the subject of complaints and, every five years, those proposed in the general monitoring plans.
Based on the monitoring results, whenever technically feasible and with the approval of the owners, acoustic barriers are implemented to minimize or eliminate noise.
In 2022, 14 fewer noise-related complaints were received than in the previous year.

Acoustic Barriers - 104 KM in 2022

Other initiatives:

  • Noise monitoring in sensitive areas;
  • Use of permeable sound-absorbing paving wherever feasible;
  • Installation of Noise Barriers.
Ambiente - Gestão do Ruído

Biodiversity Conservation

Aware of the impact that its infrastructure generates,
Ascendi has a set of initiatives that consolidate its commitment to preserving biodiversity and protecting speciesIn partnership with Infraestruturas de Portugal, Ascendi is participating in the Life
Lines project, with the objective of reducing animal mortality by identifying species and outlining measures to prevent animal-related road accidents. A mobile application was developed to identify species that live near motorways and to record the location of the road where the species appeared in the Geographic Information System (GIS).

Other initiatives:

  • Monitoring of fauna and flora in sensitive areas, especially of endangered species
  • Promotion of the conservation of protected species (transfer of stork nests and species conservation campaigns);
  • Implementation of "naturalized" wildlife corridors to decrease the barrier effect of the infrastructures;
  • World Animal Day - Ascendi celebrated World Animal Day with a video, sent to all employees, on the animals found in the areas adjacent to the motorways and the work carried out to protect species
  • International Day for Biological Biodiversity -Ascendi celebrated the International Day for Biological Diversity with the release of a video, sent to all employees, addressing the impact of the company’s activity and the initiatives promoted for fostering biodiversity in partnership with the University of Aveiro. This partnership aims to reduce animal mortality and promote biodiversity across the concession network.
  • Replanting of protected tree species(e.g. cork oaks and holm oaks) as a compensatory measure.
Ambiente - Conservação da Biodiversidade


Strategic Energy Plan

Following the geopolitical crisis currently being faced in Europe, with serious consequences for the energy sector and the possibility of eventual future disruptions, always bearing in mind the guarantee of security of energy supply, Resolution No. 82/2022 was adopted by the Council of Ministers of the Portuguese Government, whereby various quantitative guidelines are defined for reducing energy consumption, water efficiency, and mobility. These measures complement others already adopted in public policy instruments, such as the National Energy and Climate Plan (PNEC 2030) and the Long Term Strategy for Building Renovation (ELPRE).


Emission management

CO2 emissions in 2022 were of 711.334 tCO2.
Of the total emissions, 0.3% were of scope 1 and 99.7% of scope 3, referring to the trafficof vehicles circulating on Ascendi's roads

Emission managementUn.´19´20´21´22
CO2 emissionstCO2e947.581605.709830.147711.334
Avoided CO2 emissionstCO2e251.0881.0162.189
Renewable energy productionkWh83.11996.659140.082290.598


Energy consumption 

Ascendi’s energy consumption in 2022 was 64.993 GJ (0.7% less than in the previous year), 99,96% of which was produced using renewable sources.

Percentage of electricity from renewable sources

Energy consumptionUn.´18´19´20´’21´22
Electricity purchased from the grid (kWh)kWh10.895.00310.604.64010.020.9359.002.1777.891.000
Consumption of electricity from renewable self-productionkWh30,47683.11996.659134.640291.000
Energy consumptionGJ67,94670,02169.58569.85964.993
Energy intensity (grid dimensions)GJ/Km108112111111104

The eco-efficiency measures implemented represented an investment of €690.000 consisting in the conclusion of the Strategic Energy Plan, and mainly, in the installation of the photovoltaic production units for self-consumption (UPACs) defined in
the Solar I project – installation of 8 power plants with total power of 250 kWp and annual
production of 360 MWh. This installation, which was completed in 2022, allows for a
decrease in emissions of 100 tonnes CO2e/year.


Life on earth depends on the ecological balance that results from the relationships between all living organisms.
Biodiversity is essential for the health and well-being of the planet.

Biodiversity at Ascendi

At Ascendi we want to turn our infrastructures into opportunities, while preserving the balance of nature.
So, after the success of the first season, we launched the second season of the 'Biodiversity on the Road' programme, which aims to deepen our commitment to preserving the natural world by exploring new ways of caring for the planet.
In five episodes, presented by Pedro Moreira, Ascendi's biologist, and his guests, we address the importance of biodiversity in promoting the defence and preservation of the richness and variety of the natural world, and demonstrate how small gestures can be decisive in protecting it.
The programme will be available on YouTube, Ascendi's website, social media and Spotify, every Monday, from 2 October to 30 October.

This initiative is part of Ascendi's commitment to the sustainable use of resources, the ecological transition and the protection and enhancement of biodiversity throughout its network.
Join us! We'll give you tips for protecting biodiversity.
Biodiversity matters to all of us.

Season 1
Season 2
Episode 1 - Biodiversity – the balance of life on Earth
Aware of the impact of infrastructures, Ascendi organises several initiatives that strengthen its commitment to preserving Biodiversity and ensuring the protection of all species.
But what is exactly understood by Biodiversity? This concept refers to the variety of Life on Earth, from genes to the countless species of animals, plants and microorganisms found on our planet, as well as all habitats and ecosystems that form the biosphere.
In this first episode, Ascendi’s biologist Pedro Moreira will talk about the existing challenges and give us examples of small actions that can make all the difference when it comes to environmental conservation.
Episode 2 - Invasive Species– A serirous threat
What exactly are invasive species? A species is deemed invasive when it proliferates excessively under ideal conditions, in the absence of natural control, causing harm to the local environment and Biodiversity.
Why should we be concerned? In this second episode, João Lindo da Cunha, a specialist in invasive species at Ascendi, will explain why invasive species represent a serious threat to our fauna and flora.
Episode 3 – Gaia Biological Park Animal Rescue Centre
Have you ever found a hurt animal? Would you know what to do if you found an animal in need of help? In this episode, we will visit the Gaia Biological Park Animal Rescue Centre, where we’ll talk about some of the techniques used to capture animals in these situations and explain how these centres contribute to Biodiversity preservation. In addition to playing a key role in raising the population’s awareness of the region’s flora, fauna, climate and landscape, the Gaia Biological Park focuses significantly on educational initiatives aimed at children.
Episode 4 - Passerines - Small wings for a great future
What exactly are passerines? Passerines belong to a very diversified group of birds that includes more than half of the world’s bird species. As the number of people living in cities increases, birds have come to play a key role in connecting us to Nature. In this episode we will show you how you can contribute to the defence and preservation of passerine species.
Episode 5 – Pollination – Transporting life from flower to flower
Can you imagine a world without refreshing, diced watermelon in the summer or a little piece of chocolate with your coffee? Without pollinators, this could become an ugly reality. But what exactly are pollinators and what do they do? Pollinators are small animals, such as birds and butterflies, that fly from flower to flower, carrying pollen on their legs and bodies. But why are pollinators disappearing? Find out all about pollination in this episode.
Episode 1 - Biodiversity - Raising awareness to protect
2 October - Raising awareness of biodiversity conservation: a path to a sustainable future
In the first episode of this season, we talk about the importance of raising awareness for the preservation of biodiversity and present some of the campaigns that have been carried out in this direction.
Susete Pires, head of Ascendi's Marketing department, will help us in this discovery, showing the contribution this department makes to getting our message across in a successful way.
Episode 2 - Biodiversity - The risk of fragmentation
9 October - How to reduce the impact of roads on biodiversity
Habitat fragmentation is one of the main causes of biodiversity loss. It is therefore a priority at Ascendi to mitigate this impact. In this episode we present some measures to promote greater and safer road permeability for animals and the important support of Geographic Information Systems for greater efficiency in these measures.
Episode 3 - Biodiversity - The species that surround us
16 October - The species that surround our concessions
Following on from the previous episode on fragmentation, we now present some of the results of the monitoring of crossings, with images of some of the animals that cross our infrastructure safely. These results are extremely important for identifying ecological corridors. In this episode we also highlight a species identified by our monitoring system, the Iberian wolf.
Episode 4 - Biodiversity - A Synergy
23 October - The importance of urban forests
Addressing the importance of urban forests for biodiversity and their contribution to local communities, in this episode, landscape architect Ricardo Bravo, responsible for Serralves Garden, will guide us on a visit to this space, passing through the Treetop Walk, a walkway in the treetops promoted by Ascendi.
Episode 5 - Biodiversity - Ecological Restoration
30 October - Restoring degraded ecosystems
Ecological restoration actions are a way of guaranteeing the maintenance of ecosystem services and promoting biodiversity. Some of the measures applied at Ascendi are presented here, such as microhabitats for invertebrates, the restoration of river banks and the application of natural solutions such as hydro-sowing on embankments.

Social Responsibility

Ascendi’s activity is guided by a socially responsible model, interactive with the surroundings, namely seeking to improve the well-being of communities close to its areas of influence and of its employees, the development of scientific and technical knowledge in its area of activity and the promotion of universally recognized values in developed societies.

Among the current assumed initiatives we highlight:

  • Social Support
    - Direct and regular support to local charities and promote volunteer and fund-raising projects together with the Ascendi employees.
    - Establishment of protocols with third-parties which benefit employees, and campaigns to promote healthy lifestyles and disease prevention, blood donation campaigns, etc.
  • Promotion of Technical and Scientific Knowledge
    Partnerships with Universities and other Higher Education Institutions for the development of I&D projects that are relevant in Ascendi’s area of activity, for the development of curricular and vocational internship programs and scholarships
  • Promotion of Cultural Development
    - Financial support to the Museum of Contemporary Art in Porto (Fundação de Serralves) and funding of archaeological activities, as part of our construction activity
  • Promotion of Social Integration
    Participation in the activities of the Committee on Equal Opportunities, the Forum for Gender Equality and promotion of labour integration of disabled workers;
  • Sustainability Promotion - TreeTop Walk
    - Ascendi twentieth birthday anniversary was celebrated with the exclusive patronage of the Treetop Walk, an elevated walkway from the top of the trees in the gardens of Serralves Foundation, designed by the architect Carlos Castanheira in collaboration with the architect Álvaro Siza Vieira. This patronage is an example of Ascendi´s true concern for the promotion of an ethical and responsible relationship with the environment, culture, biodiversity and sustainable social practices..
Logo Católica
Logo SerraAlves
Logo IGen
Logo Nova SBE

Human Resources

Ascendi believes people are its biggest asset.
That is why its human resources policy is focused on the personal and professional development of our staff through a continued investment in coherent vocational training programs, in promoting safety at work and in the development of social activities

Each employees’ commitment is crucial for the whole organization.

Ascendi strives to clarify and align expectations so that everyone may feel involved and with a sense of belonging.

Among the developed activities we highlight:

  • Annual Training Plans, oriented to the individual and/or collective development of professional and personal skills;
  • Proactive promotion of Safety in the Workplace;
  • Promotion of a healthy lifestyle and isease prevention;
  • Sporting and cultural team activities, as a means of fostering internal cohesion.