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The document examines the potential of 'flexible demand'—shifting the timing of electricity use—to support a clean energy transition. It contrasts this with traditional demand response, highlighting how advanced metering and smart technology can align consumption with renewable energy production, reduce the need for natural gas 'ramp' plants, and avoid costly infrastructure upgrades. The author identifies key flexible end uses, such as electric vehicle charging and space heating, and proposes three mobilization models: behavioral, price-exposed, and subscription-enrolled. It concludes with recommendations for regulators to align utility incentives and ensure equitable program design.

The policy brief contends that new natural gas capacity is a primary driver of increased grid emissions in the US and that avoiding 90% of proposed gas plants could save electricity customers over $29 billion. It advocates for a transition to 'clean energy portfolios'—combinations of wind, solar, batteries, demand flexibility, and energy efficiency—to support economy-wide decarbonization and meet international climate targets.

The paper argues that current wholesale electricity markets, designed for large fuel-burning plants with high production costs, are ill-equipped for a future dominated by wind, solar, and storage, which have near-zero production costs and different operational characteristics. It identifies a disconnect between federal wholesale rates and state retail rates as a barrier to demand-side flexibility. The authors propose ten principles for modern markets—including technology neutrality, grid reliability, and long-run efficiency—and outline two emerging pathways for reform: a "Robust Spot Market" approach focusing on decentralized bilateral contracting, and a "Long-Term Plus Short-Term Markets" approach utilizing a centralized forward market.

California has established a target of 100 percent carbon-free electricity by 2045 and increased its renewable energy requirement to 60 percent by 2030. To reach these goals, the Union of Concerned Scientists proposes ten strategies: improving energy efficiency (especially during evening hours), diversifying renewable sources (wind, solar, geothermal, and low-carbon bioenergy), phasing out natural gas equitably, using renewables for grid reliability services, investing in multi-timescale energy storage, integrating western electricity markets, leveraging distributed energy resources, electrifying buildings and transport, shifting demand to match production, and developing a skilled workforce.

The report finds that building electrification is generally cost-effective for new construction and for customers switching from propane or heating oil, but often more expensive for existing natural gas customers at current prices. It argues that electrification reduces carbon emissions in most US regions, except those heavily dependent on coal, though this is expected to change as coal plants retire. The authors emphasize that demand flexibility—shifting energy use to low-cost or high-renewable periods—can further improve economics and grid integration. Key recommendations include prioritizing the electrification of oil and propane homes, stopping the expansion of natural gas infrastructure, and updating energy efficiency standards to account for total energy reduction across fuels.

The document argues that demand flexibility—shifting electricity use to match renewable supply—can increase renewable energy revenues, reduce curtailment, and lower carbon emissions more cost-effectively than investing in new gas-fired generation.

The briefing challenges three myths regarding the role of renewables and distributed energy resources (DERs) in Puerto Rico's grid recovery. It asserts that renewables and energy storage are now cost-competitive with fossil fuels, with energy storage costs dropping 70 percent between 2010 and 2016. The text highlights that renewable infrastructure proved more durable than transmission networks during the 2017 hurricanes, noting that 90 percent of utility-scale solar and wind capacity remained operational or ready. Furthermore, it argues that these technologies can be deployed quickly, citing examples of large-scale storage projects completed in months, and recommends a coordinated effort by the Puerto Rico government and utility to prioritize these projects for a more resilient energy future.

The Union of Concerned Scientists (UCS) created the Clean Energy Momentum State Ranking to evaluate how US states are advancing renewable energy, energy efficiency, and vehicle electrification. California, Vermont, and Massachusetts are identified as top overall leaders. The report emphasizes that state-level policy is a critical driver of progress, particularly in the absence of consistent federal leadership, and that clean energy momentum creates jobs and improves public health by reducing power plant emissions.

RMI defends its research on grid defection, asserting that while full disconnection from the utility may currently only be economical in Hawaii, the declining costs of distributed energy resources (DERs) create a risk of stranded utility assets. RMI critiques a Rochester Institute of Technology (RIT) study for focusing only on present-day costs and a limited set of DER options, arguing that the threat of future defection empowers customers and necessitates reforms in utility business models and retail pricing to achieve an integrated, cost-optimal grid.

The document advocates for a transition from flat electricity rates to time-varying pricing to better align consumer demand with the availability of renewable energy. It details three primary rate structures—Time-of-Use, Critical Peak Pricing, and Real-Time Pricing—and explains how households can respond through discretionary shifts, interruptible loads, and energy storage. Using a pilot program from the Sacramento Municipal Utility District as a case study, the brief demonstrates that default enrollment in time-varying rates is more cost-effective and achieves higher aggregate savings than voluntary opt-in programs. The authors emphasize the need for transparent customer education, 'shadow billing,' and protections for low-income and vulnerable populations to ensure an equitable transition.

The briefing explains that measuring electricity emissions through average factors often misrepresents the actual environmental impact of energy use. By adopting technology that tracks marginal emissions—the rate at which emissions change with a small change in load—consumers and corporations can optimize the timing and location of electricity use to maximize carbon reductions. The author highlights that harnessing end-use flexibility can make devices run 15 percent cleaner on average without cost or quality impacts. Practical applications include timing electric vehicle charging to avoid peaking plants and valuing renewable energy projects based on their specific carbon reduction potential rather than treating all megawatt-hours as equal.

This policy brief advocates for the empowerment of the Agency for Cooperation of Energy Regulators (ACER) to provide independent oversight of the EU energy market. It specifically recommends transferring the development of EU Network Codes from ENTSO-E to ACER, granting ACER oversight powers over a proposed EU-level body for distribution system operators (DSOs), and expanding ACER's role in monitoring adequacy assessments and cross-border transmission system operator (TSO) activities to prevent fossil fuel lock-in and ensure market competition.

The briefing examines the economic potential of demand flexibility, highlighting how smart household devices and aggregated commercial and industrial loads can lower system-wide peak demand and grid costs. It emphasizes that while individual residential devices offer some savings, the full value of flexibility is realized through aggregation and participation in wholesale and ancillary service markets via distributed energy resource management platforms.

The briefing challenges the notion that variable renewables will limit their own growth by depressing wholesale electricity prices. It contends that these concerns rely on static models of the grid and ignore the synergistic effects of complementary supply resources, flexible demand-side responses, and the decreasing cost of storage. By shifting from incremental to whole-system thinking and updating 20th-century market designs, the author asserts that wind and solar can continue to expand without facing practical economic limits.

The report argues that demand flexibility—the use of technology to shift electricity use across hours of the day—can significantly lower both customer bills and grid investment costs. In the U.S. residential sector, it could avoid $13 billion annually in grid and energy costs while reducing customer bills by 10–40%. The analysis highlights that 'flexiwatts' from appliances like air conditioning and water heaters can reduce peak demand and better integrate renewable energy. However, the report warns that demand flexibility may accelerate 'load defection' if utilities reduce compensation for exported rooftop solar PV.

The report analyzes 'demand flexibility' (DF)—the use of technology to shift electricity loads like air conditioning and EV charging to lower-cost times. It finds that widespread residential DF could avoid $13 billion annually in U.S. grid costs and reduce customer bills by 10–40%. Through four case studies (ComEd, SRP, HECO, and Alabama Power), the report demonstrates how DF can mitigate peak demand, integrate rooftop solar PV, and provide a lower-cost alternative to traditional grid infrastructure investments.

The report examines the technical and operational challenges of implementing nodal pricing in Europe, contrasting the European model of separated energy and transmission markets with the US Independent System Operator (ISO) model. It highlights conflicts between market flexibility and transmission system operator (TSO) security needs, the potential for integrated energy and reserve markets to increase flexibility, and the technical uncertainties surrounding the EU Target Model's flow-based approach to congestion management.

The study evaluates 19 scenarios for decarbonising Poland's power system by 2050, concluding that a technology-inclusive strategy is essential for reliability and cost-effectiveness. It identifies wind and solar as cornerstones but emphasizes the need for 'clean firm power' to replace coal, which currently provides 70% of dispatchable generation. The report warns that excluding options like nuclear power or carbon capture could triple the required energy infrastructure and significantly increase costs. Key recommendations include expanding onshore wind to approximately 70 GW, establishing a nuclear fleet exceeding 8 GW, and implementing natural gas plants with carbon capture.

The report argues that Poland must adopt a technology-inclusive strategy to decarbonise its power system, as relying on a narrow set of technologies increases costs and infrastructure requirements. Modelling indicates that while wind and solar are cornerstones, 'clean firm power' from nuclear and gas with carbon capture and storage (CCS) is essential for reliability. The study warns that excluding nuclear or CCS could triple necessary transmission infrastructure and increase system costs. To meet 2050 targets, Poland needs to accelerate onshore wind deployment to a peak of 7 GW/year and establish a nuclear fleet exceeding 8 GW.

The document argues that Poland must adopt a 'technology-optionality approach' to decarbonise its coal-dependent power system without compromising reliability or industrial competitiveness. It recommends a diverse portfolio including nuclear energy (targeting over 8 GW), expanded onshore wind (up to 70 GW), and the integration of carbon capture and storage (CCS) for energy-intensive industries. The brief calls for the update of national strategies—including the Polish Nuclear Power Programme (PPEJ) and the National Hydrogen Strategy—by 2025-2026 to provide investment certainty. Additionally, it advocates for the exploration of next-generation geothermal energy, the implementation of EU methane regulations, and the development of a clean hydrogen roadmap that balances low-carbon and renewable production pathways.