Natural capital and biodiversity management

• Energy Efficiency and Emissions Reduction Plan, which has enabled us to reduce our carbon footprint by 48% compared to 2014.
• Electricity generation projects for self- and third-party consumption from renewable energies, and cleaner and more efficient process technologies have allowed us to generate 9.1% of the electricity consumed in 2023.
• A project for the use of waste cold from liquefied natural gas (LNG) whereby the cold produced in the regasification process at plants can be used in third-party industrial processes and air conditioning installations, with savings in energy costs and a reduction in the carbon footprint.
  

• Integration of renewable gases into the Spanish and European Gas Systems through infrastructures, the promotion of a future hydrogen network in Europe and the creation of a renewable gas market.
• Hydrogen generation projects at LNG terminals for own consumption.
• Using electricity with a 100% Renewable Energy Guarantee of Origin since 2021.

• Methanol water treatment plant at the Serrablo underground storage facility, which in 2023 recovered 8,366 litres of methanol.
• Extension of the useful life of the oils and lubricants used in equipment in installations through cleaning and filtering processes.
• Recycling of triethylene glycol (TEG) used in the gas drying process at underground storage facilities by subjecting it to a distillation process that optimises the life cycle of this product.
• Incorporation of eco-design principles in construction works.
• Use of the gas pipeline route for the installation of fiber optics. 

• Implementation of mechanical weeding in fields to replace water-diluted herbicides.
• Rainwater recovery systems in facilities for fire protection and irrigation.
• Replacement of grass areas with native vegetation in facilities for a more responsible use of water, which will allow us to reduce water consumption by up to 80% in two of our facilities with the highest consumption.
  

• Biodiversity Strategy: adopt nature-based solutions to preserve, restore and manage ecosystems and species, thus contributing to climate change mitigation, resilience and adaptation with benefits for nature itself.
• Restoration and revegetation in 100% of infrastructure development projects with impacts on biodiversity.
  
• Vegetation control through extensive livestock management along pipelines.

• Waste recovery and recycling treatments required of waste managers, which enabled us to recover 91.6% of our waste in 2023.
• Methanol water treatment plant at the Serrablo underground storage facility, which in 2023 treated 75,754 litres of this waste, recovering the methanol. The resulting water was injected back into the storage facility.

• Signing of a partnership agreement with Oroel to research the development of new personal protective clothing from used materials in order to give them a second useful life.
• In 2023, disused furniture, outdated corporate material and more than 450 pairs of safety footwear were donated for further re-use. In addition, part of the gifts given at our General Shareholders' Meeting 2023 were also donated.

• Introduction to the circular economy concept in the environmental training courses.
• Awareness-raising campaigns on waste separation and management for Enagás contractors and professionals.
  
• Awareness-raising campaigns on responsible consumption, highlighting campaigns to reduce water and energy consumption.

At Enagás, we have a number of measures in place to reduce emissions from our activity that have an impact on the atmosphere. During the combustion of natural gas in the equipment of our facilities, non-greenhouse gases such as CO, SO_X, NO_X, PM10 particles and Non-Methane Volatile Organic Compounds (NMVOCs) are emitted. Therefore, these emissions are directly related to CO₂ emissions and are affected by the energy efficiency measures and CO₂ emission reduction targets. In 2023, the decrease in non-greenhouse gas emissions compared to the previous year is directly related to the decrease in natural gas consumption, which has enabled Enagás to meet its 2023 target of reducing NO_X emissions by 5% compared to 2022.

In addition, we carry out regular environmental noise measurements at the perimeter of all our infrastructure to check that the levels are within the limits set by the applicable legislation. If deviations are detected, corrective actions are taken (acoustic screens, silencers, insulation, etc.).

In terms of light pollution, we have reduced night-time lighting at its facilities by switching off the lighting at night, with the exception of regasification plants, where minimum perimeter lighting is maintained. 

Enagás does not use water in its production processes. Our main water intake is seawater for use in vaporisers and regasification plants. At the end of the process, it is returned to the sea in the same state; the decrease in temperature is minimal and does not affect the marine ecosystem. In 2023, 270.5 Hm³ of seawater was extracted and returned to its source.

1. Use water in a rational and sustainable manner by ensuring that the water used is returned to the environment in the desired conditions.
2. Promote the sustainable use of water among our stakeholders.
3. Minimise water extraction in water-stressed areas.
4. Promote the reuse and/or recycling of water at our facilities.

Enagás does not use raw materials in its production processes, but rather auxiliary substances for transmission activities such as THT, methanol, oils, triethylene glycol and liquid nitrogen.

We are committed to promoting the circular economy through the efficient use of these materials, reducing consumption, pollution, waste generation and its impact on the environment while encouraging innovation.