# VPP Source: https://ordergroup.co/glossary/vpp/ Last updated: 2026-10-10 > Virtual power plant (VPP) explained for software buyers: how aggregation works, how a VPP differs from an EMS or DSR, EU rules and what the platform must do. [Energy](https://ordergroup.co/glossary/energy/) 4 min read # VPP Virtual power plant Also known as: virtual power plant, virtual power plants Definition A virtual power plant (VPP) is a network of distributed energy resources, such as solar systems, batteries and flexible loads, coordinated by a central control system so that they can be operated and traded as one unit. Cite this entry Text "VPP". Order Group, Software glossary, 10 October 2026. https://ordergroup.co/glossary/vpp/ HTML `VPP - Order Group` Reviewed by [Paweł Zieliński](https://ordergroup.co/authors/pawel-zielinski/), Co-founder & Business Owner Last reviewed 10 October 2026 ## How a VPP works A virtual power plant has no turbine and no single site. It is software that connects many small assets, such as home and commercial batteries, solar plants, heat pumps, EV chargers and industrial loads, and operates them as if they were one power plant. Each asset alone is too small to trade on a power exchange or to offer a balancing service. Together, with a control system that can move them on command, they can. A VPP runs in four steps: - Aggregate. The platform registers assets, their location on the grid, their technical limits and the contract with each owner, and groups them into units that match a market product. - Forecast. It predicts what the assets will produce and consume without intervention, and how much flexibility they can offer in each period. That forecast is the baseline. - Dispatch. When a market, a grid operator or the VPP's own trading strategy calls for a change, the platform splits the requested power across assets and sends setpoints, usually to the [EMS](https://ordergroup.co/glossary/ems/) or gateway at each site. - Verify and settle. Afterwards it compares metered values with the baseline, proves what was delivered and pays each owner their share. The same platform can serve several markets: wholesale trading on the [day-ahead market](https://ordergroup.co/glossary/day-ahead-market/), balancing services such as [aFRR](https://ordergroup.co/glossary/afrr/), [demand response](https://ordergroup.co/glossary/demand-response/) programs and local flexibility for distribution operators. What changes between them is the response time, the size of the minimum bid, the telemetry the buyer wants and the rules for proving delivery. VPP and related terms TermWhat it isRelation to a VPP AggregatorA company that combines customer loads or generation for sale in electricity marketsThe business role; the VPP is its control systemEMSSoftware that controls the devices at one siteThe VPP sends targets to many EMSs and reads their stateDemand responseA change in consumption in response to prices or a paid callOne product a VPP can sellEnergy cooperativeA group that shares and settles local energy among membersCan run a VPP-like control layer over members' installations ## What a VPP means for your software A VPP is mostly an integration and accounting problem. The optimization algorithm matters, but projects fail on device diversity, data gaps and disputes over what was delivered. Requirements worth writing into the specification: - Devices are heterogeneous and partly unreliable. Every brand of inverter, battery or charger has its own interface, some report through the maker's cloud, and some go offline. The platform needs a per-model integration layer and has to know, for each asset, whether it is reachable right now. - Owners and operators declare availability. They report when an asset is unavailable, for a single metering point or a whole aggregation unit, and the dispatch logic must take those declarations into account before it accepts a call. - Allocation is a rule you can explain. Splitting a call evenly across assets is simple but ignores what each one promised. Allocation by declared power, with a buffer above the requested total, is fairer and safer, and the rule must be visible to the operator. - The baseline decides the money. The platform needs a documented baseline method, a way to rebuild data after a communication outage and reports that come out soon after each period ends. - Telemetry matches the product. Balancing services need fast, frequent readings and setpoints; a demand response call can work with metered 15-minute data. Pick the target market before you design the data path. - Customers see only their own assets. An aggregator serves many owners, so data separation is a functional requirement as well as a security one. A customer whose points share a call with others should see only their own part. - Local control stays local. Safety limits and battery protection run at the site, and a central VPP command never overrides them. Writing the specification? Add VPP to your requirements checklist Collect the terms your project touches and get their system requirements in one e-mail, ready for an RFP. ## Rules and standards EU law does not define a virtual power plant. It defines the activity behind it. Article 2(18) of Directive (EU) 2019/944 defines aggregation as a function performed by a natural or legal person who combines multiple customer loads or generated electricity for sale, purchase or auction in any electricity market, and Article 2(19) defines an independent aggregator as one not affiliated with the customer's supplier. Article 17 requires Member States to allow final customers, including those offering demand response through aggregation, to take part in all electricity markets alongside producers without discrimination. For balancing services, Commission Regulation (EU) 2017/2195 (the electricity balancing guideline) sets the framework in which transmission system operators buy reserves. Each operator defines the prequalification and the technical conditions for its products, so a VPP that wants to sell aFRR has to meet that operator's rules on response time, telemetry and testing for every unit it offers. ## From our projects We do not offer a VPP platform and have not built one end to end. We have built two of its layers for clients: the aggregation and call layer of a demand response platform, which runs in production, and a site-level orchestrator for battery storage, which we are building in 2026. We built the demand-side response module of the [Zeronest](https://ordergroup.co/case-studies/zeronest-solar-panel-monitoring-app/) energy management platform. It groups metering points into aggregation units, keeps unavailability reports for each point and each unit, and lets an aggregator create a call across many points. Participants confirm a call through a link sent by SMS and e-mail, and the platform builds a corrected baseline and a report for each hour of the call. The [demand response](https://ordergroup.co/glossary/demand-response/) entry describes how a call is split across points, including the buffer above the requested power. In the energy cooperative module, added in 2026, an operator can control the installations of many metering points at once. For Global Green's battery storage sites we are building an EMS whose orchestrator combines setpoints from several sources, such as trading, aFRR and direct control, resolves conflicts between them and only then distributes the result across batteries. That is the site-level layer of a VPP: it turns commands from several sources into safe setpoints for each battery. From our projects [Zeronest - Solar Panel Monitoring App with Automated Battery Management How Order Group built Zeronest's solar panel monitoring app: an EMS that charges, discharges or sells power based on live prices and weather.](https://ordergroup.co/case-studies/zeronest-solar-panel-monitoring-app/) Where to get it - [Zeronest](https://zeronest.pl/) Zeronest offers an energy platform with a demand response module for aggregators and energy cooperatives. We build its software. ## Related terms - [aFRR](https://ordergroup.co/glossary/afrr/) Automatic frequency restoration reserve aFRR (automatic frequency restoration reserve) is a frequency restoration reserve that the grid operator activates automatically, by sending setpoints from its frequency controller, to bring system frequency back to its nominal value. In Poland it must reach full activation within 5 minutes. - [Demand response](https://ordergroup.co/glossary/demand-response/) Demand response is a change in electricity consumption by end users, away from their normal pattern, in reaction to prices or to a paid call from a grid operator or aggregator. It can be offered by one site or by many sites pooled through aggregation. - [EMS](https://ordergroup.co/glossary/ems/) Energy management system An energy management system (EMS) is software that reads the meters, inverters and batteries on a site and sends them setpoints, deciding when to charge, discharge, curtail or trade within grid, contract and safety limits. - [Energy cooperative](https://ordergroup.co/glossary/energy-cooperative/) An energy cooperative is a cooperative whose members produce, store and use renewable energy together. In Poland it is a legal form under the Renewable Energy Sources Act with its own settlement of members' energy; in EU law the closest concept is the renewable energy community. - [V2G](https://ordergroup.co/glossary/v2g/) Vehicle-to-grid V2G (vehicle-to-grid) lets a plugged-in electric vehicle send electricity from its battery back to the grid, not only charge from it. An aggregator pools many vehicles and sells their flexibility on energy and balancing markets. ## Read more on the blog - Article [What Does BMS Mean? Battery & Building Management Systems Explained](https://ordergroup.co/blog/what-is-bms/) - Article [Energy Distribution & Production. Virtual Power Plants](https://ordergroup.co/blog/virtual-power-plant-software/) - Article [Managing Surplus Renewable Energy with Energy Storage Systems](https://ordergroup.co/blog/surplus-renewable-energy-storage/) ## Sources 1. [Directive (EU) 2019/944 on common rules for the internal market for electricity, Article 2(18), Article 2(19) and Article 17](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32019L0944) - EUR-Lex 2. [Commission Regulation (EU) 2017/2195 establishing a guideline on electricity balancing](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32017R2195) - EUR-Lex Paweł Zieliński reviewed this entry. Ask how it applies to your project. [Ask an engineer](https://ordergroup.co/contact-us/) ## FAQ ![Paweł Zieliński](https://ordergroup.co/media/images/Pawel_p3bY6z4.format-webp.webp) Paweł Zieliński Co-founder & Business Owner [Talk to an engineer](https://ordergroup.co/contact-us/) ### What is the difference between a VPP and an aggregator? The aggregator is the company and the market role: it signs contracts with asset owners and sells their combined flexibility. The VPP is the software and control system the aggregator uses to forecast, dispatch and settle those assets. ### What is the difference between a VPP and an EMS? An EMS controls the devices at one site within that site's limits. A VPP coordinates many sites and sends each of them a target, and the energy management system at that site carries it out. Without a reliable EMS at each site, a VPP cannot guarantee delivery. ### Which assets can join a virtual power plant? Any asset whose power can be measured and changed on command: batteries, solar plants with curtailment, heat pumps, EV chargers, industrial processes with some time flexibility and backup generators. What limits a market is response time and metering, not the asset type. ### Does a VPP need real-time data from every asset? It depends on the product. Balancing services need fast telemetry and setpoints for every unit, while a demand response call can be verified from metered 15-minute data. The data path should be designed for the most demanding market you plan to enter. Building a system that depends on VPP? See how we build software for this domain, with case studies and the stack we use. [See Energy Hub](https://ordergroup.co/energy-hub/) Requirements checklist For each term we send the definition and what it requires from your software. Free, no sales call needed. Your checklist is empty. Use the plus next to a term to add it.