The shift from small-scale pilots to utility-scale virtual power plants (VPPs) is accelerating, as regulators and system operators adapt electricity markets to accommodate distributed energy resources. Aggregated assets such as home batteries, electric vehicles and smart devices are increasingly being enabled to participate alongside conventional generation.
This marks a structural change. Energy systems are no longer managed solely through centralised assets, but through the coordination of thousands, potentially millions, of distributed devices.
Market access reshapes the landscape
In the United States, developments such as FERC Order No. 2222, a rule from the Federal Energy Regulatory Commission (FERC), which allows these resources to be bundled together and treated as a single market participant, have required grid operators to open wholesale markets to aggregated, behind-the-meter resources. This creates new routes for flexible capacity, with the potential to reduce reliance on fossil-fuel peaking plants and lower overall system costs.
Implementation, however, varies widely. Some regions are prioritising short-term load relief and seasonal capacity products, while others are working towards fully integrated, year-round participation. Questions around metering, telemetry and coordination remain central as market rules are translated into operational practice.
California is currently among the most advanced markets, where large aggregations of residential devices are already delivering grid services. Elsewhere, progress is more gradual, with ongoing debate around participation thresholds, customer churn and the interaction between state and wholesale schemes.
A coordination problem at scale
For Operational Research professionals, VPPs present a fundamentally different type of optimisation challenge.
At their core, these systems require coordinated decision-making across vast numbers of distributed assets. Decisions about when devices charge, discharge or respond to signals must balance cost, reliability and user constraints, all under uncertainty in demand, generation and behaviour.
This is not simply a larger version of traditional optimisation. It is a shift towards dynamic, decentralised systems where central control is often infeasible, and where local decisions must align with system-level objectives.
Methods that matter
- Large-scale optimisation and decomposition techniques
- Stochastic modelling under uncertainty
- Network analysis to manage grid constraints
- Simulation to test system behaviour under different scenarios
The growing importance of distributed and real-time decision-making also highlights the relevance of multi-agent approaches, where coordination emerges from interactions between individual components rather than top-down control.
Market design and interoperability challenges
Beyond optimisation, market design is a critical factor in enabling VPPs to function effectively.
Ensuring fair and efficient participation requires careful structuring of incentives, pricing mechanisms and constraints. Issues such as double-counting, interoperability between platforms and long-term commitment of flexible resources remain unresolved in many regions.
Technical interoperability is also a limiting factor. Efforts such as IEEE 2874 a proposed standard that aims to create a common language for connecting and coordinating devices, data and systems in the real world, aims to standardise communication and coordination across devices, reducing integration complexity and supporting scalable orchestration. At the same time, advances in edge optimisation are enabling more localised decision-making, reducing data requirements while maintaining system performance.
From pilots to system impact
If successfully implemented, VPPs have the potential to reshape both operational planning and long-term investment decisions. Distributed flexibility could reduce the need for network upgrades and new generation capacity, while improving resilience across the system.
References
https://www.enverus.com/blog/the-virtual-power-plant-landscape-scaling-distributed-aggregation/
https://www.ferc.gov/ferc-order-no-2222-explainer-facilitating-participation-electricity-markets-distributed-energy
https://spatialwebfoundation.org/spatial-web-foundation-announces-ieee-approval-of-spatial-web-standard/