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The distinction between reported emissions and avoided emissions rests on a fundamental asymmetry in how environmental accounting treats cause and effect. When a company reports its scope 1, 2, and 3 emissions, it is documenting impacts that physically occur as a consequence of its own activities, whether at its facilities, in purchased energy, or along its value chains. Avoided emissions, by contrast, are counterfactual by nature: they describe impacts that do not occur in a hypothetical alternative world where the company’s product or service is absent. This counterfactual character is precisely what makes scope 4 both valuable and contentious. On one hand, it captures the genuine environmental benefit of technologies that displace more polluting alternatives, a benefit that conventional accounting frameworks render invisible. On the other hand, because no physical measurement can directly observe an impact that never happened, avoided emissions depend entirely on the choice of baseline scenario against which the comparison is made. A solar panel installed in a grid dominated by coal generation avoids far more emissions than the identical panel installed in a grid already supplied by hydropower and nuclear plants, even though the panel itself is unchanged. The study’s finding that scope 4 impacts can exceed scope 1-3 impacts in several categories, particularly in regions with fossil-based electricity production, follows directly from this logic: the dirtier the displaced alternative, the larger the avoided burden.

The life cycle assessment methodology underlying the analysis deserves particular attention, because it determines what counts as an environmental impact in the first place. Rather than limiting the assessment to greenhouse gas emissions, the researchers quantified a broader set of impact categories, which matters because renewable energy technologies redistribute environmental burdens rather than simply eliminating them. Manufacturing wind turbines and photovoltaic panels requires mining and processing of metals and minerals, energy-intensive production of components, and transport logistics, all of which generate impacts that appear in scope 1, 2, and 3 accounting. A single-metric focus on carbon dioxide would risk obscuring trade-offs in categories such as resource depletion, ecotoxicity, or land use. By evaluating multiple impact categories across five geographically distinct settings—Brazil, China, Germany, India, and the USA—the study acknowledges that the environmental profile of the same technology varies substantially with local conditions. Manufacturing supply chains, grid emission intensities, capacity factors driven by local wind speeds or solar irradiation, and the composition of the displaced electricity mix all shape the net outcome. This geographic sensitivity is one of the strongest arguments for integrating scope 4 into investment analysis: two renewable energy projects with identical scope 1-3 footprints can deliver very different avoided impacts depending on where they operate.

The temporal dimension of the findings adds a layer of complexity that standard reporting frameworks struggle to accommodate. The study shows that as electricity grids decarbonize, the avoided impact of wind and solar power declines, because the marginal alternative being displaced becomes cleaner. This creates a dynamic in which the environmental value of renewable energy investments is highest precisely in the early stages of the energy transition and diminishes as the transition succeeds. Yet the researchers demonstrate that even under a net zero electricity scenario by 2050, the avoided impact still exceeds the scope 1-3 footprint of both wind and solar technologies. This persistence reflects the fact that even a net zero grid contains residual emissions and other environmental burdens that renewable generation displaces, and it suggests that scope 4 accounting retains relevance throughout the transition rather than becoming obsolete once decarbonization is achieved. For investors, this temporal sensitivity implies that static assessments of avoided impact can be misleading; a portfolio-level view needs to anticipate how grid evolution will alter the marginal benefit of each new renewable installation over its operating lifetime, which typically spans two to three decades.

The allocation problem addressed in the study is arguably its most novel contribution, because it exposes a structural gap in how sustainability benefits can be attributed within complex systems. A wind farm or solar installation is not a monolithic product but an assembly of components—turbine blades, nacelles, generators, towers, inverters, mounting structures, tracking systems, and cabling—produced by different companies across a global supply chain. When the completed system generates electricity that displaces fossil generation, the resulting avoided impact is a property of the whole system, not of any single component. Yet there is no physical relationship between an individual component and the avoided emissions it enables: a turbine blade does not avoid emissions in any measurable physical sense; the complete turbine does, and only in combination with the grid context in which it operates. The study therefore tests three allocation methods—economic allocation, mass allocation, and allocation according to scope 1-3 impact—as candidate approaches for dividing the avoided impact among components. Each method embodies a different philosophical stance. Economic allocation distributes the benefit in proportion to monetary value, which is intuitive for financial reporting but vulnerable to price volatility and market distortions. Mass allocation ties the share to physical weight, which is stable and verifiable but may bear little relation to a component’s functional contribution. Allocation according to scope 1-3 impact links the credited benefit to the burden each component causes, which has an appealing symmetry—those who bear the environmental cost of production also receive credit for the benefit delivered—but may disadvantage components manufactured with unusually clean processes.

The practical significance of solving this allocation problem extends beyond academic bookkeeping. Under current reporting standards, a company that supplies a critical component of a renewable energy system cannot formally claim any share of the avoided emissions that its component enables, because scope 4 sits outside the reporting boundary and no accepted method exists for partitioning it. This creates a perverse incentive structure: the companies whose products make decarbonization possible receive no accounting recognition for the positive externalities they generate, while the environmental benefit accrues, if it is counted at all, only to the operator of the completed installation. A credible allocation framework would allow component manufacturers to report their proportional contribution to avoided impact, potentially improving their standing in sustainability-linked investment strategies, lowering their cost of capital, and strengthening the business case for continued innovation. The study’s suggestion that this approach could extend to other systems generating avoided impact, such as waste-based bioenergy, indicates that the methodology has general applicability wherever products displace more polluting alternatives, though each application would require careful definition of the counterfactual baseline.

The integration of scope 4 into investment analysis also intersects with a broader debate about the purpose and limits of corporate sustainability reporting. Reporting frameworks were originally designed to make negative externalities visible and comparable, enabling investors to price environmental risk. Extending them to positive externalities introduces methodological challenges that negative-emission accounting does not face. Reported emissions are, in principle, observable and auditable; avoided emissions are model constructs that depend on assumptions about what would otherwise have happened. This makes scope 4 inherently more susceptible to optimistic baselines and strategic manipulation, a risk that any reporting standard would need to address through conservative default assumptions, third-party verification, and transparent disclosure of the reference scenarios used. The researchers’ decision to ground their calculations in life cycle assessment rather than simplified emission factors provides a more rigorous foundation, since life cycle assessment captures the full chain of burdens associated with both the technology being deployed and the alternative being displaced. Nevertheless, the counterfactual problem cannot be eliminated, only managed, and the credibility of scope 4 reporting will depend on the governance structures built around it.

The policy context described in the source material—the European Green Deal, Fit for 55, REPowerEU, the EU Taxonomy, and the Corporate Sustainability Reporting Directive, alongside the US Inflation Reduction Act—illustrates why the timing of this methodological work matters. These frameworks mobilize private capital toward clean energy by creating regulatory expectations and financial incentives, but they operate on accounting categories that currently exclude avoided impact. If scope 4 were integrated into disclosure requirements and taxonomy criteria, the signal sent to capital markets would change: investments in renewable technologies in regions with carbon-intensive grids would appear more attractive than they do under emissions-only accounting, potentially steering capital toward the locations where each installed megawatt delivers the greatest environmental benefit. Conversely, poorly designed scope 4 rules could enable greenwashing if companies claim avoided emissions without demonstrating additionality—that is, without showing that their products genuinely caused displacement that would not have occurred otherwise. The distinction between attributional accounting, which describes impacts as they are, and consequential accounting, which models the systemic effects of decisions, is central here, and life cycle assessment offers tools for both approaches.

Ultimately, the study contributes to a reorientation of how the financial sector can understand its role in the energy transition. The International Energy Agency’s projection that half of global electricity must come from renewable sources by 2030 implies an enormous reallocation of capital within a narrow window, and capital allocation decisions are only as good as the information on which they rest. By demonstrating that avoided environmental impact can exceed the direct environmental footprint of renewable technologies across multiple impact categories and geographies, and by proposing concrete methods for distributing that benefit among the companies that create it, the research provides both a measurement foundation and an attribution framework for a dimension of sustainability performance that current standards leave invisible. The finding that this benefit persists even under net zero grid scenarios suggests that scope 4 is not a transitional curiosity but a durable feature of environmental accounting for technologies that displace residual burdens. As reporting requirements mature and investors demand more complete pictures of corporate sustainability performance, methodologies of this kind are likely to move from academic proposal toward practical integration, provided that the counterfactual assumptions, allocation choices, and verification mechanisms are made transparent and consistently applied.

Subject of Research: …

Article Title: Accounting and allocation of avoided environmental impact—Integrating scope 4 in sustainability reporting and investment analysis

Article References: Gustafsson, M., Eriksson, K., Håkansson, V., & Cerin, P. (2026). Accounting and allocation of avoided environmental impact—Integrating scope 4 in sustainability reporting and investment analysis. Frontiers in Environmental Economics, 5, Article 1905659. https://doi.org/10.3389/frevc.2026.1905659

Image Credits: AI Generated

DOI: 10.3389/frevc.2026.1905659

Keywords: scope 4 emissions, avoided emissions, life cycle assessment, renewable energy, sustainable finance, wind power, solar photovoltaics, GHG protocol, investment analysis, carbon accounting, energy transition, sustainability reporting