SSE’s electricity transmission business will today submit to the energy regulator, Ofgem, its plans to deliver at least £22bn in mission-critical grid infrastructure through its Business Plan for the RIIO-T3 price control period, from 2026 to 2031.

SSEN Transmission, the 75 per cent owned subsidiary of SSE, has published its Business Plan for the RIIO-T3 period, which is underpinned by the three ambitious goals of zero interruptions in electricity supply, clean power (with the capability to meet 20 per cent of UK demand for clean power) and driving investments in the energy transition.

The plan sets out expenditure of around £22.3bn with a baseline total expenditure of around £6bn and around £16bn of committed strategic investments that have already received approval of need from Ofgem through its ASTI framework and LOTI Uncertainty Mechanisms.

The business has also set out the potential for an additional £9.4bn of potential future expenditure, which could bring the total investment over the RIIO-T3 period to around £31.7bn.

The expenditure represents one of the largest ever private investment programmes in Scotland and could add £15bn in value to the UK economy, £7bn of which would be in Scotland, and £3bn of that in the north of Scotland.

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