At Welsh Water, our vision is simple. It’s to earn the trust of our customers every single day and we take seriously our duties as provider of essential public services to over 3 million people across most of Wales and adjoining parts of England.

This unique responsibility gives us a crucial role to play in helping to enhance not only the wellbeing of these customers and their communities but also the environment on which we all depend – both now and for generations to come. Protecting our environment is essential to helping protect our health, homes, water supplies and food production.

The world is facing a climate emergency, and the future is now. As one of the largest energy users in Wales, we need to adapt the way we deliver our services to allow us to deal with the challenges we face in the years and decades to come.

To help protect our environment, we choose an ambitious, pro-active response to achieving a net zero future, and are committed to reducing our total carbon emissions by 90% by 2030 and achieving carbon neutrality by 2040.

Welcome to our roadmap - our journey to achieve this.

Our Commitment

"As one of Wales’ flagship companies, we’re proud to commit delivering net zero carbon emissions by 2040.

This isn’t simply a target in relation to infrastructure or operational emissions as it’s about changing the way we think, plan and deliver. We’re a socially responsible company with a clear purpose and vision to earn the trust of our customers every day.

This is about taking responsibility for managing the biggest challenge of our time in terms of climate change, focusing on the long-term and ensuring we help protect our customers, communities and the wider environment while leaving a fairer future for generations to come."

Peter Perry
Chief Executive of Welsh Water

Net zero emissions means the amount of greenhouse gases that are released to the atmosphere, are equal to the amount of greenhouse gases that are removed from the atmosphere. The world is embarking on a ‘Race to Zero’.

The 2015 Paris Agreement saw 195 countries agree to limit global average temperature rise to well below 2 degrees above preindustrial levels and pursuing efforts to limit that increase to 1.5 degrees, will require an unprecedented global effort to halve greenhouse gas (GHG) emissions this decade, achieve a ‘net zero’ position by 2050 at the latest and shift to an overall removal of GHGs on an annual basis post-2050.

Wales has strengthened its legislative framework to reduce greenhouse gas emissions through The Environment (Wales) Act 2016, and has set out its legal commitment to achieve net zero emissions by 2050, whilst pushing to get there sooner.

In April 2019, the Welsh Government declared a climate emergency, which poses a direct threat to the health, economy, infrastructure and our natural environment.

The future is now. We know that transitioning to a low carbon society is vital to improve the social, economic, environmental, and cultural well-being of Wales and meeting international obligations. This is why we choose a proactive response, helping create a healthier and more sustainable Wales.

Key Facts

Our Renewable Energy Generation Sites:

Sustainable and Resilient Services

"While combating climate change has been a key focus over recent years, this commitment will place it at the forefront of our strategic thinking and operational planning.

The shifts in weather patterns, caused by climate change significantly impact our operations as hazards such as droughts, floods, storms or heatwaves become more frequent and more intense.

We will work with stakeholders and customers to adapt our work, mitigate our impact on the environment and secure more sustainable and resilient services to our customers."

Steve Wilson,
Managing Director of Wastewater Services at Welsh Water

Our Goals - Journey To Zero

We aim to become energy neutral through self-generation, energy efficiency and a transition towards a circular economy approach. Please go to Welsh Water 2050 for more information.

Some of the generation will still require the export (and subsequent re-import) of electricity via the national grid and local distribution networks.

More progress in demand management can be made through adoption of energy efficient equipment, whilst future designs for treatment and pumping systems must prioritise energy efficiency. Specific actions will include:

  • Supporting the redesign of asset replacements and upgrades to minimise energy consumption;
  • Adopting proven technologies and efficient control systems to minimise energy consumption;
  • Expanding our renewable generation portfolio; and
  • Investigating energy storage facilities to increase resilience and manage energy demand

Our roadmap to deliver this is split into five core pillars.

Journey to Zero



Biodiversity and our wider ecosystem services face threats including habitat loss, fragmentation and over-exploitation. In the longer term, temperature and changed rainfall patterns will also impact biodiversity. We will look for ways to help nature, enhance biodiversity and promote ecosystem resilience, while we carry out our water and sewerage activities.

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Journey to Zero



We abstract just 3% of effective rainfall in Wales for public consumption, lower than other parts of the UK and supply high quality drinking water to over 3 million customers across Wales, which means cleaning and delivering more than 830 million litres of water every day.

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Journey to Zero

Powering a

Cleaner Future

Faced with a changing climate and increased energy costs, we will aim to become an energy neutral business, whilst maximising the opportunities to reuse treated water and other potentially valuable natural minerals, contributing to the circular economy in our local region.

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Journey to Zero

Tackling Fugitive


In the process of treating wastewater and sewage sludge, greenhouse gases are emitted which we refer to as fugitive emissions. These emissions are mainly methane and nitrous oxide emissions. Both gases have a significantly higher impact on climate change than CO2 and are currently the largest single source of Greenhouse gas emissions.

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Journey to Zero



Alongside the work we will do to reduce our carbon footprint we recognise that even with the most aggressive carbon reduction strategy, the total carbon footprint of our company currently cannot be fully reduced.

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Detailed information on our carbon emissions available soon.