Research and analysis

The Infrastructure Planning (Onshore Wind and Solar Generating Stations) Order 2025: impact assessment - RPC opinion (green-rated)

Regulatory Policy Committee opinion on Department for Energy Security and Net Zero鈥檚 impact assessment (IA) in respect of the Order

Documents

Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email [email protected]. Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

The Government propose changes to the Nationally Significant Infrastructure Project (NSIP) regime to increase the threshold at which solar projects are determined as an NSIP;聽 and to re-introduce onshore wind-generating stations, with a generating capacity of over 100 megawatts, into the NSIP regime for England only.

The provides sufficient evidence of the problem under consideration to support the rationale for intervention.聽 It also conducts options generation and provides a partial NPSV assessment to justify the preferred way forward, with indicative estimates where possible. The IA explains qualitatively the need to set a threshold that balances the development cost savings while still ensuring that projects go through the right processes, supporting the justification of the preferred option. 聽Considering the deregulatory nature of the proposal, the RPC finds the SaMBA to be sufficient.

The IA presents an EANDCB figure of 拢0.3 million, consisting of familiarisation costs to business. The Department indicates that it expects the preferred option to have an overall positive impact on total welfare due to the non-monetised benefits from efficiency in site sizing and reduced system emissions. The IA would benefit from further summarising the administrative impacts faced by local and central government in the total impacts section of the scorecard, particularly as these impacts appear to be mixed, including costs as well as benefits. The IA could clarify whether local planning authorities have the capacity and expertise to handle additional solar project applications.

Updates to this page

Published 31 March 2025

Sign up for emails or print this page