The publication of the National Energy System Operator (NESO) of the 2025 Future Energy Scenarios: Pathways to Net Zero shows an increased optimism in the energy transition -forecasts.
The Future Energy Scenarios Document (FES) is the first to be published under Neso’s assignment as an independent body that supervises the entire energy system, but is the fifteenth report in its kind, previously carried out by National Grid Eso.
Like last year, the FES gives an independent picture of ‘paths’ To follow the entire energy system to Net Zero. According to the preface of Neso’s strategy and policy director Claire Dykta, the past year is “characterized by action, acceleration and ambition”.
In addition to the three paths to Netto Zero in 2050, a route has been modeled that represents failure to meet the legally binding obligation. Last year this was the ‘counterfactual’, but FES 2025 uses ‘lagging behind’.
Unlike earlier, it is not a ‘status quo’ scenario because it takes into account the current number of low carbon projects in the pipeline and an increased policy ambition that leads to a certain level of progress. Although Zero will not be reached in 2050, it sees behind the inflammatory progress, although not at a sufficient pace.
The thickets from the current government to renewable energy already demonstrably influences future energy consumption and reducing carbon emissions.
Paths to net zero
The three paths to Netto Zero in 2050 are as follows:
Holistic transitionIn which net zero is achieved by mix of electrification and hydrogen, latter mainly in industrial clusters, not used as heat, except as a secondary fuel in heat networks. The involvement of the consumer is very strong and the path also assumes a high renewable capacity, with a sharp fall in gas and moderate levels of nuclear capacity. Supply Side Flex is high, via energy storage and interconnectors – no undiminished gas on the network in 2050.
Electric engagement See Netto Zero achieved through electrified question, in which consumers are very involved in the transition through smart technology. Electric involvement has the highest peak demand for electricity and requires high nuclear and renewable capacities. It also has the highest level of bio energy with carbon capture and storage over all net zero routes. The flexibility of the delivery of the side is high, comparable to the holistic route with extra supply of low carbon -for -the -Netherlands power.
Hydrogen evolution See fast progress in the hydrogen industry and the heat sector meet net zero. Hydrogen is used for some vehicles with heavy goods, but EV absorption is strong. This route sees high levels of the shipping power plants of hydrogen, which leads to a reduced need for renewable and nuclear capacities. Most flexibility in this path comes from hydrogen storage.
All routes see “substantial and continuous” development of new power assets and infrastructure.
Neso notes that the Clean Power 2030 (CP30) action plan of the government is a clear benchmark for the required ambition and represents a critical milestone, but that, as some in the industry have already begun to point out, it is important that the efforts retain after 2030 momentum.
In the paths, the total installed generation capacity grows after 2030: between then and 2040, 116 GW-125GW is added, with another 52-72GW added between 2040-2050.
FES 2025 says that this reflects “an ambitious, continuous expansion of the generation capacity when we go to Net Zero”.
In all paths, the share of the distributed generation remains comparable to today at around 30-35%, but this is as part of a much larger electricity system.
Neso uses ‘waves’ to describe the phases in which progress will occur until 2050. It says that Great -Britain must use innovation and progress, because every wave has determining characteristics and the next setup.
The waves of action as set out by Neso in FES 2025. Image: Neso.
The initial ‘Foundation’ golf has laid all the necessary basis for the next wave that focuses on acceleration, scaling up the markets for recording new low -carbon technologies and delivering clean electricity.
Fast action In the next five years, a third wave will make it possible to make energy growth, roll -out of new low -carbon technologies and expansion of infrastructure. The final wave will then include the transition to a long -term, secured and clean energy system until 2050 and then.
As Qualified in the advice of the Climate Change Committee to the government To reach its carbon budgets, the energy sector is only part of the transition and FES 2025 states that all sectors must now speed up their efforts to match the clean power tempo and ambition.
FES covers long -term uncertainty in the development and assessment of infrastructure; It will collaborate with other planning that is carried out by Neso, including the Strategic Spatial Energy Plan (SSEP) and the Regional Energy Strategic Plans (Resps).
Indicative for use for modeling is the fact that the CP30 action plan of the government was based on the holistic path of FES 2024.
FES 2025 identifies four important areas in which the ‘critical enablers’ fall for success:
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Energy efficiency – managing demand growth and reducing energy costs for consumers. Policy and innovation can enable efficiency improvements and approval of measures in all sectors.
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Flexibility of demand – larger levels of flexibility offer larger opportunities to make more efficient use of low costs of renewable energy. Increased flexibility of the consumer is a supplement to the supply side (where most are currently coming from) and was a large characteristic of last year’s FES. Neso states: “Making participation effortlessly and honestly would increase trust in results due to consistent positive impact and is therefore crucial for success.”
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Infrastructure and energy supply – Expansion of infrastructure is needed and communities must understand how they benefit from clean energy to encourage the support of the expansion. The government’s planning law comprises a monetary reimbursement for households in the vicinity of new electricity pylons.
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Switching to low -carbon technologies – this is vital in transition, but FES 2025 states that Great -Britain is an ‘engineering powerhouse’ and can use that the potential of the development of electrification, carbon exhaust and low carbon fuel technologies makes possible.
Changes in future energy scenarios since 2024
FES 2025 now uses 2030 as the last year of assessing the installation capacities based on pipelines, market knowledge and research, with 2031 now the first year in which our capacity expansion module optimizes the structure of generation.
Minimum building speeds are set for nuclear and offshore wind, while maximum building speeds are set for onshore wind and solar energy.
The energy demand projected in each path is somewhat changed to FES 2024 due to changes in macro -economic assumptions such as GDP growth, population and industrial activity.
Shifts in energy prize forecasts, the availability of fuel and global market dynamics also play a crucial role.
Other important changes since FES 2024 have been published, include important developments in industry, including the formulation of Neso itself, Connections Reform, CP30 and, most recently, Market reform.
Until 2030, the demand for electricity will increase at a faster speed than in FES 2024, a trend that is continued in the course of 2030. Although predictions are higher, the range is slightly greater for the demand for electricity on the path: FES 2024 range of 458TWH-550WHHH, FES 2025 is 540TWWH-646THH..
Modeling changes also include a new data center model. The question of data centers in GB is currently estimated at 7.6 TWH of the 2.4 GW -compound. These are mainly used in bank applications and must therefore be close to London; Build-out for AI use (according to the AI action plan of the government) can be placed strategically.
With sufficiently strong location signals, FES 2025 anticipates that a maximum of 20% of the future demand for data centers could be established in Scotland, so that the network restrictions can be reduced.
The range of modeled solar capacity has been considerably reduced in FES 2025, with faster growth and increased clarity in the coming years as a result of connection reform changes around co-location that see projected capacities in 2035 that increase from 42 GW-69GW-62GW.
For the flexibility of the delivery of the battery storage, the growth of the battery energy is increased in the capacity projections in the medium and long term of FES 2025: from 29 GW-36GW to 31 GW-40GW in 2050.
The growth rate in FES 2025 is higher than in FES 2024, which leads to lower average battery capacities on the paths before 2032.
Long-term energy storage (LDES) sees slower maximum bet levels by 2030, because the range is lowered from 3.7 GW-5.9 GW to 3GW-5.3GW, due to the long lead and planning times and capital spending. However, the value of LDEs is maintained and by 2050 the reach from 12 GW-15GW to 13 GW-17GW.
The costs of net zero by 2050
FES is not formed around the optimal cost option, instead of a “broad view” of possible paths that look at a series of outcomes about supply and demand, deliberately including different options (some of which will be more expensive) to demonstrate the potential reach of uncertainty and options in line with the ‘core story’ of each route.
Neso will publish the cost analysis later in the summer in a technical appendix, including the estimated costs related to each route and the cost method. Neso remarks cost estimates are not the same as the impact of the consumer, which is a function of the policy and will not be estimated in the analysis.
It also emphasizes economic growth and the creation of jobs in connection with Zero, as well as the reduced volatility and exposure to global shocks of fossil fuels.
