Contribution
My Lords, this instrument, which was laid before the House on 10 March 2025, is another important step in supporting the deployment of onshore wind and solar, which are critical in achieving the Government’s clean energy superpower mission, including clean power by 2030. An effective planning system is key to unlocking the new infrastructure that our country needs to underpin our energy security and resilience. It is important that planning applications are determined through an appropriate planning route that reflects a project’s size, impact and complexity and in which potential issues are identified and mitigated as necessary.
The nationally significant infrastructure projects—NSIP—regime is governed by the Planning Act 2008, where decisions on development consent are made by the Secretary of State for the Department for Energy Security and Net Zero. The NSIP regime applies to larger projects, with a megawatt threshold determining which energy-generating projects are deemed nationally significant. The NSIP regime provides the largest, most important projects of strategic importance with a single unified approach to seeking development consent, where applications are determined by Ministers balancing local impacts against the wider national benefits. Following submission, an extensive examination period will commence whereby interested parties, including local authorities, people of office and the general public, can make written or oral representations to the examination. This ensures that the voices of communities are heard during the decision-making process.
Until recently, a de facto ban on onshore wind generation in England severely limited deployment. Changes introduced in 2015 saw stringent tests introduced into planning policy alongside the removal of onshore wind generation from the NSIP regime in 2016. These changes set an almost impossible bar to meet, resulting in the pipeline of projects sinking by more than 90%, with only 40 megawatts of onshore wind generation consented and becoming operational in the intervening period.
In July 2024, this Government disapplied those planning policy tests and committed to reintroducing onshore wind into the NSIP regime, reversing the damaging policies of the past decade and placing onshore wind on the same footing as solar, offshore wind and nuclear power stations. As such, through this instrument, onshore wind projects with a generating capacity of more than 100 megawatts in England will be consented under the NSIP regime. The 100-megawatt threshold reflects the advances in turbine technology over the past decade, with modern turbines being larger and more powerful. Reintroducing onshore wind into the NSIP regime will provide an appropriate route for nationally significant projects to seek planning consent where they are of a scale and complexity that can carefully balance local impacts against national benefits and meet the UK’s wider decarbonisation goals. This will provide greater confidence for developers and incentivise bringing forward projects.
Solar has been subject to a 50-megawatt NSIP threshold since it was originally set in the Planning Act 2008. However, much like onshore wind, solar panel technology has seen significant advances in efficiency, enabling a greater megawatt yield per site. Evidence suggests that the 50-megawatt threshold is now causing market distortion. With modern technology, mid-sized generating stations now have a generating capacity greater than 50 megawatts and therefore fall within the NSIP regime. We think this is likely to be disproportionate to their size, scale and impact, and it has resulted in a large amount of ground-mounted solar projects entering the planning system and artificially capping their capacity at just below the 50-megawatt threshold, leading to the potentially inefficient use of sites and grid connections. Therefore, this instrument raises the NSIP threshold from 50 megawatts to 100 megawatts for solar to ensure that mid-sized projects have access to a more proportionate planning route via planning authorities, which should incentivise those projects that would otherwise have capped their capacity to develop to a more optimal and efficient scale.
The Government are also mindful that mid and large-scale solar and onshore wind projects are preparing to enter the planning system and may have already invested and undertaken preparatory steps with the expectation of entering a specific regime. Changing the NSIP at short notice could result in projects entering a different regime than expected, with the potential to increase costs to developers or cause delays.
Therefore, the instrument also makes transitional provisions for onshore wind and solar projects that are already in the planning process when this order comes into force. These provisions will ensure that projects already progressing under one legislative regime will not be required to move to a different regime as a result of the order.
Through consultation, the Government sought views and supporting evidence on reintroducing onshore wind into the NSIP regime at an appropriate threshold and revising the existing threshold for solar. We received a range of responses; most respondents agreed with the proposed approach of reintroducing onshore wind into the NSIP regime, with a majority in favour of a 100-megawatt threshold. While we initially consulted on a 150-megawatt threshold for solar, based on further assessment and analysis of consultation responses, we concluded a 100-megawatt threshold would be more appropriate and better reflect modern technology.
In conclusion, we see this instrument as being another important step in delivering clean power, supporting the deployment of onshore wind and solar and establishing the UK as a clean energy superpower. It supports an effective planning system that will ensure that applications are processed efficiently through the appropriate regime and will avoid distortionary effects on deployment. These measures ultimately aim to support future energy security and resilience alongside our 2030 goals and wider decarbonisation targets. I beg to move.