A spending watchdog has delivered a damning assessment of progress made by public sector organisations across Wales in tackling climate change, warning that the collective ambition to achieve a net zero public sector by 2030 is unlikely to be realised. According to BBC News, Audit Wales has found that since a Welsh government "climate emergency" was declared in 2019, decarbonisation has become a lower priority for public bodies, despite recognition of its importance.
This story was first reported by BBC News.
The watchdog's findings are particularly concerning given that reported public-sector emissions have actually risen significantly in recent years. According to reporting on Audit Wales' follow-up review published on 3 November 2026, emissions across the public sector climbed 20% between 2021–22 and 2024–25, reaching 3.96 million tonnes of CO₂e. Among the 67 bodies reporting in both years, the increase was 18%.
Audit Wales acknowledges that many positive changes have occurred within individual organisations, but the overall trajectory demonstrates that the "collective ambition" for a net zero public sector in Wales by 2030 will not be achieved. The watchdog estimates that decarbonising Welsh council buildings alone would cost at least £2.3 billion.
Why has progress stalled?
Financial and political pressures have caused decarbonisation to fall down the priority list since 2022, according to Audit Wales. Public bodies reported to the watchdog that their overall financial constraints mean they are struggling to invest in decarbonisation efforts. This challenge is compounded by broader budget pressures facing Welsh public services; Wales' Finance Minister warned in October 2026 of the worst budget settlement since before the pandemic, with calls for greater borrowing powers and the release of pledged rail investment.
The Welsh government has also been criticised for failing to define the "collective ambition" for net zero by 2030 as a formal "target". Audit Wales noted that there are no penalties or incentives to drive compliance, which has added to uncertainty among public bodies about the level of priority they should attach to carbon reduction. Some councils have even begun reconsidering their climate commitments; Barnsley Council announced plans to withdraw its 2019 climate emergency declaration and net-zero targets, redirecting resources to frontline services.
What do public bodies say about the costs?
Public bodies have made limited overall progress in understanding how much decarbonisation will cost in the near or longer term. Where organisations have attempted to estimate the longer-term financial implications, some have described the figures as unaffordable. A 2022 Audit Wales review that examined evidence from 48 public bodies found that only two respondents had fully assessed the financial implications of meeting the 2030 ambition, highlighting a significant gap in financial planning across the sector.
Supply-chain emissions represent the largest share of the public-sector footprint, but data collection remains problematic. Audit Wales found that supply-chain emissions data is often estimated using proxies because suppliers' emissions information is difficult to obtain, making accurate measurement and accountability challenging.
What was the original thinking behind the 2030 target?
In 2017, the then-Labour Welsh government called for a net zero public sector by 2030, arguing that public bodies were "uniquely placed" to influence emissions in areas such as buildings and transport. The strategy was based on the premise that if government-backed organisations made the transition and invested in infrastructure like electric vehicles and charging points, renewable power systems, and modern heating solutions, it would make such changes easier and cheaper for the wider public to adopt.
The "collective ambition" does not require every individual public body to reach net zero by 2030, but rather is intended to provide a shared direction of travel and an expectation that all public bodies contribute towards reducing emissions. However, the lack of clear targets, penalties, or incentives has undermined this approach.
What are the monitoring and accountability gaps?
Audit Wales has identified significant weaknesses in how progress is tracked. The Welsh Government does not monitor progress against milestones in its decarbonisation route map, which lacks clear, measurable indicators for consistent assessment. This absence of robust monitoring mechanisms means there is no systematic way to evaluate whether public bodies are moving towards the 2030 ambition or falling further behind.
Ann-Marie Harkin from Audit Wales stated:
We can list positive examples, but not enough progress has been made overall, and we owe it to future generations to do better.
What is the Welsh government's response?
The Welsh government has acknowledged the findings while defending its commitment to decarbonisation. A spokesperson stated that a net zero public sector remains a priority and that the government wants to continue supporting decarbonisation efforts to lower emissions, reduce energy bills, and strengthen energy security. The government noted that
the 2030 ambition has driven action and leadership, but it's clear that there is more work to do on decarbonisation across and beyond the public sector in Wales.
However, the current Plaid Cymru government has set a different target for Wales as a whole: reaching net zero by 2040, which is ten years sooner than the current legally binding target for Wales and the UK. This broader ambition sits alongside the struggling 2030 public sector goal.
What happens next?
Audit Wales has recommended that the Welsh Government clarify its strategic direction, improve emissions reporting standards, and support better financial planning across public bodies. The watchdog has also recommended that the government decide whether to retain the 2030 ambition in its current form, given the evidence that it is unlikely to be achieved.
The challenges facing Wales' decarbonisation efforts extend beyond the public sector. Experts have warned that bureaucratic hurdles in Wales hinder tree planting efforts, with the country potentially achieving only 10% of its 2030 tree planting target, further undermining the nation's broader climate goals.
