Then
A decade ago, most of this was speculative: the curves were steep, the costs unforgiving, and the politics fragile.
Directing capital to where it matters most.
The Transition Acceleration Framework (TAF), developed by Rhodium Group in partnership with CalSTRS and Generate Capital, is a forward-looking analytical framework for evaluating where climate investment, policy, and procurement will accelerate decarbonization, beyond the trajectory the world is already on.
TAF in practice:
data center power
In this applied note, we analyze several real-world data center power configurations and assess the transition impact of each investment. We find the strongest acceleration impact from grid connected data centers with 100% PPAs for clean firm power, with moderate impacts associated with 100% VRE PPAs or off grid energy campuses primarily built on clean power. Fossil investment scores negative, with permanent off grid NGCCs scoring worst of the assessed options, and gas moderated by variable renewables or later grid connection assessed as moderately decelerating.
Read the case studyWhy this matters
The transition has come further than expected.
The hard part is next.
A decade of deliberate policy, sustained R&D, and trillions in private capital have moved decarbonization technologies from speculative to mainstream. But the work ahead looks very different from the progress achieved up until this point.
Now
- Clean > Fossil. Annual clean energy investment now exceeds fossil fuel investment worldwide.
- Cheapest new power. Solar and wind costs have fallen 80–90% since 2010.
- EVs mainstream. A rounding error a decade ago; a major share of new car purchases in key markets today.
- The curve is bending. Emissions trajectories that seemed locked in a decade ago have shifted meaningfully downward.
Next
The technologies and sectors that need to scale are harder, more capital-intensive, and further from commercial maturity:
A surge in clean investment
Global energy investment (Trillion USD)
Source: Rhodium Group and IEA.
The curve has bent
Projected global energy CO2 emissions, Gigatons CO2-e
Source: IEA World Energy Outlook 2014, 2025.
The problem
Climate-motivated investors deserve better tools.
Not all climate investments are equal, but today's frameworks treat them as if they are.
Mature utility-scale solar
Already on a strong commercial path
Counted as
Climate-aligned
Actually delivers as
Low incremental impact; Capital was flowing here anyway
First-of-a-kind clean steel
Pre-commercial · Capital scarce
Counted as
Climate-aligned
Actually delivers as
High incremental impact; Could unlock an entirely new sector
The two dollars look identical under existing frameworks, but have very different real-world climate impacts.
The solution
A new framework, built for forward-looking decisions.
Rhodium Group's Transition Acceleration Framework provides rigorous, independent, forward-looking analytics for evaluating climate investment impact, with a method specifically designed to distinguish investments that accelerate the transition from those that merely participate in it.
How TAF is different
Existing frameworks
- Backward-looking
- Own emissions footprint only
- Built for reporting
- Risk mitigation
TAF
- Forward-looking
- Economy-wide transition impact
- Built for decision-making
- Transition acceleration
TAF is built around three questions climate investors cannot currently answer and should be able to:
-
01
Where is additional capital most needed?
Rhodium independently models the deployment trajectory of every covered technology under two scenarios: a Baseline reflecting current policies and cost trends, and a Potential path consistent with deep decarbonization. The gap between them is the acceleration opportunity.
-
02
How efficiently does capital translate into impact?
We measure the incremental emissions reduction delivered per dollar of investment required to move a technology from Baseline to Potential, normalized to a unified scale across every technology and region.
-
03
Does this specific project accelerate the transition?
Projects don't just reduce emissions directly. They drive learning, de-risk business models, build supply chains, train workforces, and shape markets. We capture these mechanisms across five acceleration attributes.
Metrics
A two-dimensional view of climate impact.
Transition Potential tells decision-makers where additional effort matters most. Transition Efficiency tells them where it goes furthest. The highest-leverage opportunities sit where both are high.
Transition Potential
Transition Potential measures the size of the acceleration opportunity for a technology in a region. Rhodium Group independently models the deployment trajectory of over 100 climate-relevant technologies across 16 global regions, anchored by two scenarios: Baseline, representing current policy and technology trends; and Potential, representing a deeply decarbonized world. Transition Potential represents the difference between emissions reductions in the Baseline and Potential scenarios, the gap between the world we’re on track for and the goal of deep decarbonization.
Baseline vs. Potential illustrative trajectory
Emissions reduction, million metric tons of CO2-e
Source: Rhodium Group Transition Acceleration Framework. Note: Illustrative.
2050 Transition Potentials for select US technologies
Additional emissions reductions in 2050 beyond baseline in a potential scenario, million metric tons of CO2-e
Source: Rhodium Group Transition Acceleration Framework. Note: NGCC = Natural Gas Combined Cycle.
Transition Efficiency
Transition Efficiency measures the incremental emissions reduction delivered per dollar of investment required to move a technology from its Baseline trajectory to its Potential path. It captures the capital efficiency of closing the acceleration opportunity, in million metric tons of CO2-equivalent per billion dollars invested.
Transition Efficiencies for select US technologies
Capital efficiency of additional emissions reductions, in million metric tons of CO2 reduced beyond baseline per billion dollars invested
Source: Rhodium Group Transition Acceleration Framework. Note: NGCC = Natural Gas Combined Cycle.
Technology Factor
A single normalized score combining Transition Potential and Transition Efficiency for every technology and region. Comparable across the full landscape of climate-relevant technologies.
The Technology Factor scale
Decelerating to accelerating, every covered technology placed on the same axis
Source: Rhodium Group Transition Acceleration Framework.
Acceleration Factor
Acceleration Factor is a product of Technology Factor and the five acceleration attributes weighted by a technology-specific weighting scheme based on exposure to each attribute. Acceleration Factor facilitates a structured discussion among project stakeholders around the project’s value and theory of impact.
Consider two early SMR nuclear projects in a market with a mature nuclear industry.
Project A introduces a novel financing vehicle, leveraging a public loan guarantee and a philanthropic mezzanine co-investment to de-risk and attract conventional project debt. Project B has invested heavily in government affairs, and has secured lighter export restrictions for deployment to emerging nuclear markets.
Source: Rhodium Group Transition Acceleration Framework. Note: Illustrative.
Audiences
Built for serious practitioners.
TAF is designed to be integrated into investment, procurement, and policy decision-making across a wide range of contexts. The methodology is publicly documented, developed through multi-year partnerships with leading private-market investors, and grounded in Rhodium's independent energy-system modeling.
Investors & asset owners
With climate mandates from stakeholders and beneficiaries.
- Vet whether climate-dedicated capital is genuinely accelerating the transition.
- Apply the same rigor to climate priorities as to financial performance.
- Distinguish acceleration from participation, on an independent, forward-looking basis.
Corporates
With significant procurement needs and ambitious climate goals.
- Quantify the catalytic impact of early-stage investments.
- Build the case for transformative solutions over mature defaults.
- Equip procurement and sustainability teams with defensible evidence.
Policymakers
Allocating public investment, incentives, and regulatory action.
- Map where public action shifts the pace of the transition most.
- Separate market-led sectors from those where intervention is essential.
- Quantify the capital efficiency of accelerating different pathways.
Philanthropy
Deploying grants, concessionary capital, and field-building support.
- Identify where strategic concessionary capital unlocks catalytic change.
- Guide R&D priorities and the highest-leverage grant allocations.
- Engage the institutional investment community in a shared language.
Data
A proven foundation, refreshed annually.
TAF is built on the modeling architecture behind the Rhodium Climate Outlook, Rhodium's flagship probabilistic projection of global energy, emissions, and temperature outcomes.
Probabilistic modeling
4,950 Monte Carlo samples per run incorporating uncertainty in GDP and demographics, fossil fuel prices, technology costs and learning rates, climate policy, and market acceptance.
Independent baseline
Policy inputs derived from observed real-world drivers, not aspirational targets. Many existing analyses use counterfactuals that inflate the apparent impact of mature-technology investment.
Annual refresh
Both scenarios are updated annually as policy evolves, technologies mature, and deployment data accumulates. A baseline that doesn't update will, within a few years, dramatically misstate the real opportunity.
Calibrated weights
Project-attribute weights are technology- and region-specific, developed by Rhodium from structured literature review of dominant barriers to scale and held constant across users so that scores mean the same thing in every hand.
The full method is publicly documented.
Download the overview reportGet in touch
Discuss how TAF can support your climate strategy.
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