Episode Summary
Executive Summary: The episode examines whether 24-7 carbon-free energy is the right climate goal for companies and cities. It argues that while hourly matching can improve grid awareness, innovation, and local decarbonization, it may not maximize emissions cuts. The central tension is between optimizing for a company’s own 24-7 consumption versus optimizing for the greatest carbon reductions overall.
Main Topics: What 24-7 carbon-free energy is (Priority: 5/5): A refresher on the concept: hourly matching of electricity use with carbon-free generation, supported by hourly RECs and broader eligibility for clean firm resources like nuclear and CCS gas. Measuring carbon and hourly accounting (Priority: 4/5): Discusses practical challenges in calculating avoided carbon, including marginal generators, geographic boundaries, missing grid data, and treatment of distributed energy resources, while noting these issues are solvable over time. The emissionality critique (Priority: 5/5): Presents the main objection: carbon procurement should prioritize the biggest emissions reductions, not matching a company’s own hourly load. This favors consequential accounting and marginal emissions analysis over attributional, hourly-average methods. Industrial policy logic of 24-7 (Priority: 5/5): Explains the counterargument that 24-7 procurement can drive investment toward missing clean technologies—especially clean firm power and long-duration storage—acting like voluntary industrial policy. System change and local grid engagement (Priority: 5/5): Argues that companies pursuing 24-7 become more tied to local grids, pushing utilities, regulators, and legislators to decarbonize, unlike traditional unbundled REC purchases. Hybrid approaches and multiple values (Priority: 4/5): Suggests emissionality and 24-7 need not be mutually exclusive; companies can use marginal and average methods differently by scope or context, while also weighing environmental justice, land use, and wildlife impacts.
Key Arguments: 24-7 CFE requires hourly time-stamped clean energy certificates and a broader definition of carbon-free power, but the technical accounting problems are less important than the bigger strategic question. Because CO2 is globally mixed, the climate goal should be maximum emissions reduction, which often means buying clean power where it displaces the dirtiest fossil generation, not where a company happens to consume electricity. A company can improve its own 24-7 score without reducing emissions if it simply trades hourly RECs with another company or uses batteries in ways that increase charging-period emissions. 24-7 can still be valuable as a market signal: it may accelerate clean firm technologies, long-duration storage, and other system resources that help decarbonize the grid at scale. The pursuit of 24-7 forces companies to engage with local grid politics and procurement, potentially creating broader social and policy pressure for decarbonization. A hybrid approach can use 24-7 for grid-level decarbonization goals and emissionality for targeted emissions reductions, rather than treating them as mutually exclusive. Other priorities such as environmental justice, land use, and wildlife impacts should be incorporated into procurement decisions, which makes a pure 24-7 objective insufficient on its own.
Data Points: Time horizon for likely strategic tension: 2025-2026 - Melissa Lott suggested decisions about whether to stay in locations without a clear path to 24-7 may intensify around this period. Battery storage gap duration: 8 to 4 hours - Lott noted the gaps left by wind and solar are often multi-day, beyond what some battery technologies can solve. Certificate unit: 1 REC per megawatt hour - Renewable projects generate one renewable energy certificate for each MWh produced. Hourly matching unit: 1 hour - 24-7 CFE depends on time-stamped hourly RECs rather than monthly or yearly chunks. Scope reference: Scope 2 and Scope 3 - Janis described using average emissions for scope 2 and marginal emissions for scope 3 in a hybrid framework. Number of emissions eras: 3 stages - Microsoft's Janis described a progression from attribution, to additionality, to consequential impact. Geographic scope: Dozens and dozens of markets - Microsoft said it wants to influence PUCs and utilities across many local markets worldwide.
Pivotal Quotes: "Measure emissions, not megawatt hours." — Henry Richardson of What Time: Used to summarize the emissionality critique that carbon reductions, not just clean-energy matching, should be the objective. "The heart of 24-7 carbon-free procurement is the pursuit of transformative impact on electricity systems via accelerated innovation." — Jesse Jenkins: Explains the pro-24-7 argument that procurement can speed development of clean firm and long-duration storage technologies. "We are trying to drive massive system change well beyond Google." — Michael Terrell: Describes how Google views 24-7 as a strategy for influencing grids, policy, and broader decarbonization beyond its own operations.
Implications: 24-7 CFE is best seen as a systems strategy, not a perfect emissions-optimal strategy. For companies, the future likely involves hybrid procurement that blends hourly matching, marginal-emissions thinking, and broader social criteria to influence grids and accelerate clean infrastructure.