If urgent action is not taken within the next three years to accelerate investment, additional build-out of renewables, decarbonised generation, and electrical grid, transmission, and distribution infrastructure, Great Britain is at risk of falling short on its target to supply decarbonised electricity by 2035 warns GE Vernova in its report Challenges in the Electricity Market: 2025-50 – Reaching Net Zero Carbon in Great Britain.
The study examines alternative energy generation and transmission investment scenario pathways considering the economic build-out of renewables, nuclear, storage and lower carbon thermal generation across Great Britain.
With the expectation that electricity demand will double (300TWh-600 TWh) by 2050, including electrification of heating, transportation and industry to meet the decarbonisation goals, the study shows an additional 250GW of renewable and decarbonised generation, approximately 2.5 times that of existing capacity, will need to be added to the power system by 2050. About two-thirds of the new capacity is expected to be wind and solar, with nuclear, abated gas and battery storage all playing an important role to accommodate for the intermittency of renewables and grid congestion.
Significant upgrade of grid infrastructure and operations will be required in addition to what is currently envisioned the analysis states.
Vice president of strategy at GE Vernova’s Gas Power business Martin O’Neill said: “To meet the 2035 target and ensure secure, zero-carbon and affordable energy, Great Britain urgently needs an electricity market design which allows early-stage investment into renewables, lower carbon technologies, and the expansion of the electrical grid system.
“It is incumbent on policymakers to incentivise private capital providers with clear investment signals through net zero legislation and regulation as there is no silver bullet that will fast forward Great Britain’s electricity system to 2035 and deliver the net zero target. Forming private-public funding partnerships will be the cornerstone of adding additional capacity and expanding the grid at speed.”
The report recommends enabling and accelerating investments in a combination of electricity generation, transmission, and system control or management technologies with supportive policy and regulatory measures, such as rapid permitting. It estimates that more than £50bn investment, twice as much as invested the past five years, is required in generation and storage capacity alone by 2030.
Furthermore, the analysis suggests accelerating build out of committed capacity for this decade and additional capacity of new generation earmarked for the next decade to be delivered by 2030. Significant upgrade and expansion of the transmission capability will be inevitable to securely deliver energy from various generation sources to consumers from across Great Britain. In total, around 80GW of additional transmission line capacity across the Scottish and English boundaries will be required to alleviate congestion, avoid curtailment of renewable electricity, and save circa £80bn in cost to generate electricity by 2050. This needs to happen along with expediting market reforms that are technology agnostic it stated.
Progress on the key recommendations need to happen within the next three years to mitigate the risk of Great Britain falling short of achieving a decarbonised power system by 2035 and the 2050 net zero target said the study.