A thorough examination of the Conservative report reveals significant flaws in its assumptions, leading to potentially higher emissions and slower electrification, contrary to its claims.

The recent report from the Conservative Party, produced in collaboration with the think tank Onward, argues that lowering electricity prices is essential for promoting climate-friendly technologies like electric vehicles (EVs) and heat pumps. The report suggests that moving away from current net-zero policies could ultimately benefit both economic growth and environmental goals. However, multiple experts have critiqued the report, identifying fundamental flaws that challenge its core assertions. This analysis highlights ten key areas where the report diverges from credible assumptions, leading to questionable conclusions about the future of the UK’s energy landscape.

The Plan Would Increase UK Emissions
The Onward report's modeling, conducted by Transira Energy, presents an "alternative policy pathway" (APP) which assumes a departure from the UK's net-zero goal by 2050. This pathway predicts a significant increase in carbon emissions—an additional 524 million tonnes (MtCO2) from 2030 to 2050—akin to the annual emissions of South Africa. The report attributes this excess to a greater reliance on unabated gas-fired power plants, contradicting its premise that cheaper electricity can facilitate emissions reductions.
While the Conservatives believe their approach will drive down electricity costs and increase adoption of electric technologies, scenarios derived from realistic forecasting indicate that the opposite could occur. The UK's pre-existing net-zero target is crucial to ensuring a controlled pathway toward reducing anthropogenic climate change impacts, a balance that the APP fails to maintain. Without clear emission reduction goals, climate-related issues could escalate.

The Plan Would Slow Electrification
Despite claims of lower electricity costs leading to increased adoption of EVs and heat pumps, the alternative scenario outlined in the report actually suggests a lower uptake of these technologies. The scrapping of key supportive policies—such as subsidies for heat pumps and targets for phasing out sales of petrol and diesel vehicles—will play a pivotal role in reducing the overall electrification efforts in the UK. Therefore, while the APP posits reduced electricity prices, it simultaneously projects a diminished drive toward electrification.
Daniela Quiroga, a senior associate in the renewable energy sector, points out that lower electricity costs alone may not be sufficient to spur demand for electric technologies. Instead, integrating supportive policies for electrification could amplify progress. An illustration of this point is contrasted by Tara Singh’s evaluation of potential costs incurred from declining EV adoption: estimated expenses to replace missing EVs could reach £65-95 billion over two decades.

Further compounding these issues is the assertion made by the Onward report regarding the "high spark gap"—the disproportionate prices of electricity compared to gas—which discourages transition from gas heating to electric systems. Analysts advocate for policy shifts that prioritize reducing this gap through better cost structures, rather than abandoning net-zero commitments altogether.
Gas Prices Are Unlikely to Remain Low and Stable
A significant component of the APP is the reliance on low and stable gas prices, a foundation that is questionable given recent global energy price fluctuations. The report assumes that gas prices will revert to pre-conflict levels and remain stable for the next two decades—a notion at odds with prevailing market trends and geopolitical risks. Historical data indicates that spikes in gas prices often correlate with global events, such as the wars in Ukraine and the Middle East, which have disrupted gas supply chains.

Analysts, including Ashutosh Padelkar of Aurora Energy Research, view the gas price assumptions in the APP as implausible, suggesting that they exceed the reasonable forecasts by market analysts. The reliance on gas for a future energy strategy may expose the UK to price shocks that could erode any proposed savings stemming from lowered energy prices.
The appeal to domestic oil and gas production underscores this reliance but overlooks the fact that the UK is likely to face continued dependency on imported gas. Historical context reveals that domestic extraction—particularly from the North Sea—may not sustain future energy demands, making UK gas prices vulnerable to international market conditions.

The Plan Assumes Gas Plants Are Cheap to Build
In a bid to meet rising electricity demands without expanding renewable sources, the Conservative report outlines plans for a significant increase in gas power generation, computing that an additional 21 gigawatts (GW) will be necessary. However, this assumption rests on estimated construction costs of £650 per kilowatt (kW), a figure controversially lower than recent data suggests, which cites costs exceeding £1,000 per kW. Experts assert that actual expenditures for new gas plants are skyrocketing, especially amidst increased global demand for gas turbine technologies.
The trend toward rising capital expenditure underscores a broader narrative that undercuts the report’s financial advisability. Accumulating evidence indicates that completing gas plant projects can easily surpass projected budgetary estimates due to supply chain pressures and market dynamics. Given this uncertainty, claims of building extensive new gas generation capacity could overlook emerging market realities.

Nuclear Faces High Costs and Delivery Challenges
The Onward report touts an expansion of nuclear power capacity as a cornerstone of its energy strategy. However, the proposed cost assumptions are overly optimistic in light of the ongoing complexities involved in nuclear project development. For instance, the projected delivery cost range of between £122-£138 per megawatt hour (MWh) aligns closely with the financial terms tied to existing nuclear projects, such as Hinkley Point C, which has been fraught with delays and constant budget overruns.
Critics also point out that not only does the report fail to articulate how costs will decrease, but it also neglects to address the challenges surrounding the timeline and construction of nuclear facilities. As Richard Howard from Aurora indicated, the presumptions about reducing costs lack a strong factual foundation given the UK's historical struggles with cost management in nuclear construction.

The Report’s High Network Cost Estimates Do Not ‘Add Up’
Financial projections in the Onward report highlight significant reductions in network costs, which are essential for the sustainable operation of the electrical grid. However, criticisms mounted around the methodology behind these assertions—the report claims savings of £137 billion purely based on assumptions around grid usage and generation location without providing robust rationale.
Experts argue that while there may be a case for reduced costs against the backdrop of increased firm power generation, the lack of details on how network expansion will be postponed contradicts existing infrastructure needs that must adapt to accommodate growing electrification demands. Failure to properly expand the electrical grid could lead to systemic inefficiencies and constraints that ultimately offset any proposed savings.

The System Integration Costs Are ‘Far Out of Line with Mainstream Thinking’
The Onward report posits that integrating renewables into the electric grid incurs substantial costs, which justifies a pivot towards gas and nuclear strategies instead. However, this assertion is contentious, as many analysts challenge the inflated estimates promoted by Onward regarding the cost factors associated with renewable energy systems. Instead of reflecting the reality of renewable integration, these figures appear to characterize an effort to skew perceptions about the viability and cost-effectiveness of renewables.
Numerous independent evaluations drawn from reputable sources conclude that the purported integration costs associated with renewables are exaggerated. For instance, evidence suggests that with improved grid management and innovative technology deployment, the marginal system integration costs connected with renewables can be significantly lower than outlined in the Onward report.
The Proposed Changes Could Undermine Investor Confidence
By eliminating support mechanisms for renewables, including the Contracts for Difference (CfD) and the Renewable Obligation (RO), the report presents a scenario that runs the risk of eroding the confidence of existing and prospective investors in the energy sector. The robust investments made in renewable technology hinge on the reliability of contract frameworks that guarantee return on investment.
Industry experts such as Tom Haddon assert that the removal of such long-standing support systems—especially when coupled with the potential disinvestment from existing generation capacity—could discourage future financial engagement, hampering the overall competitiveness of the UK energy market. Thus, undermining established contracts may lead to investor disengagement, compounding concerns over energy security and growth in the sector.
Carbon Market ‘Savings’ Are ‘Just Rearranging Things on a Spreadsheet’
A significant claim within the Onward report purports that the removal of carbon taxes will consequently decrease wholesale prices by £94 billion, positioning this as a key method to drive down electricity costs. However, industry professionals argue that this claim may mislead, as eliminating carbon taxes redirects financial resources from government funds, rather than creating a genuine saving.
This shift effectively rearranges budgetary items without producing real fiscal efficiency. Moreover, it complicates relationships with international energy markets—particularly with the EU, given ongoing negotiations surrounding carbon pricing coordination. The fallout from abandoning carbon pricing could lead to unintended consequences, especially with respect to international trade in energy resources.
The Report ‘Grossly Simplifies’ Long-Duration Energy Storage
Finally, the Onward report dismisses support for long-duration energy storage, despite advocacy within the energy sector calling for strategic investments in such technologies to bolster grid reliability. This disengagement from LDES initiatives could stifle innovative advancements while undermining economic benefits outlined in previous studies estimating substantial cost savings from LDES deployment.
Analysis shows that long-duration storage solutions contribute significantly to operating efficiencies, optimizing electricity generation through adjusted demand strategies, smoothing fluctuations, and improving grid management. By failing to recognize the importance of these technologies, the report potentially undermines robust frameworks needed for a resilient and efficient energy future.
In summary, the Conservative report on low-cost energy strategies advanced by Onward is built on a precarious foundation of questionable assumptions and overstated claims. By analyzing the serious flaws in the report, it becomes clear that a pivot away from net-zero targets and towards increased fossil fuel dependence may not only compromise the UK’s climate goals but could also destabilize its energy security and economic growth. A balanced energy future necessitates a commitment to supporting renewables, investing in innovative technologies, and rigorously maintaining climate commitments.