Decarbonisation strategies: combining incentives and penalties to accelerate industry transition

Policymakers aiming to decarbonise industry and power generation should combine sustained financial support for clean technologies with clear costs for carbon, researchers and industry observers say, because each instrument addresses different barriers to transformation.

A study by teams at the University of California San Diego and Princeton University finds that subsidies and other incentives drive rapid uptake of low‑carbon technologies in the near term, while punitive measures such as economy‑wide carbon pricing are required to shrink incumbent fossil fuel industries decisively. “For years, models have told us what’s economically efficient, but not what’s politically possible,” David Victor, professor at the UC School of Global Policy and Strategy and a member of the research team, explains. The authors modelled scenarios including long‑term subsidies, standalone carbon pricing, sequenced approaches that begin with incentives and phase in penalties, and politically unstable programmes that start and stop.

According to the Renewable Energy Institute, the United States’ Inflation Reduction Act, enacted in August 2022 and allocating more than $370bn for climate and energy measures, demonstrates how durable incentives can spur private investment across the value chain, from residential solar and heat pumps to battery manufacturing and critical minerals processing. The UC/Princeton modelling indicates that firms are more willing to commit capital when subsidy regimes are predictable; conversely, when support is withdrawn or delayed, investment flows slow and future emissions reductions become costlier.

For industrial decarbonisation professionals, that finding underlines the value of policy certainty for capital‑intensive projects such as electrifying heat, deploying large‑scale electrolysers and retrofitting heavy industry. The researchers estimate that a consistent set of incentives could enable roughly an 80% reduction in energy‑related CO2 emissions in advanced economies by mid‑century, conditional on follow‑through measures that address residual emissions.

But incentives alone are unlikely to dismantle entrenched fossil fuel assets. The study argues that only when firms face credible penalties do markets emit the unambiguous signals needed to shrink incumbent sectors. Carbon pricing mechanisms, whether taxes, emissions trading systems or hybrid approaches, remain the most direct way to internalise external costs. Carbon pricing is widely regarded as an efficient instrument for reducing greenhouse gases because it places a monetary charge on emissions and thereby alters operating and investment choices.

Policymakers have an expanding toolkit. Emissions trading schemes create a market for allowances that caps total emissions, while carbon taxes set a price that applies economy‑wide. More novel proposals, such as carbon quantitative easing, central banks purchasing carbon rewards to establish a price floor, aim to scale mitigation finance without direct fiscal transfers, though such approaches remain unconventional and contested in both academic and policy circles.

Regulatory enforcement also matters for industrial players. The U.S. Environmental Protection Agency maintains models and financial tools used to calculate the economic benefit of noncompliance and to design penalties and remediation projects, tools that shape enforcement outcomes and corporate behaviour. According to the EPA, those models are updated regularly to reflect changes in compliance costs and the deterrent value of penalties.

The political context can override technical logic. The UC/Princeton authors observe that policy unpredictability prompts firms to defer investment. “When policy is unpredictable, companies delay investment,” Victor continued. The research contrasts the period of policy consistency that followed the Inflation Reduction Act with more recent retrenchment in the United States, noting that advocacy groups tracking federal actions have documented large numbers of rollbacks and proposals to scale back climate measures. In such environments, reliance on incentives without a credible path to penalties risks stranded expectations and slower structural change.

Public acceptance and behavioural dynamics are part of the equation for industrial decarbonisation too. Social scientists cited by the study highlight that mandates attract less resistance when they are perceived as effective and minimally invasive; voluntary measures perform differently. That implies policymakers must pair technical instruments with communications and institutional design that demonstrate efficacy and preserve perceived freedoms where possible.

For B2B decision‑makers in hard‑to‑abate sectors, the implication is pragmatic: advocate and plan for a dual pathway. Secure long‑lived incentives to lower the upfront cost curve for low‑carbon assets and ensure investment certainty, while pressing for credible, phased carbon‑pricing or regulatory backstops that assign value to emissions reductions and deter continued reliance on fossil infrastructure. According to the UC/Princeton authors, developing a clearer picture of “what works, and when” will be essential to meeting global climate objectives and to aligning industrial strategy with decarbonisation imperatives.