Energy management system
A system that connects storage facilities, power plants, and markets.
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The Energy Management System (EMS) is at the heart of it all: It controls all energy flows to ensure safe and cost-effective operation.
24/7 monitoring
System monitoring every second for early detection of deviations and error conditions.
Continuous Development & Integration
Ongoing development of use cases, algorithms, and system components.
Central Control & Overview
Centralized coordination of energy flows across all system components—for a resilient system.
Open System Architecture
Modular EMS architecture based on OpenEMS for long-term future-proofing.
Integration
Compatible with any system at your location
The Voltfang Energy Management System (EMS) connects your storage system to your PV system, charging stations, heat pumps, or CHP units and controls them all together—including systems that are added later. Through the grid connection, the EMS connects your location to the grid and the electricity market.
Set up your location:
Production
Storage
Consumers
Electricity MarketDay-Ahead, Intraday, Balancing Power, Your Direct Supplier
Voltfang EMS
PowerGrid connection point
ProductionNot selected
StorageNot selected
ConsumersNot selected
Energy FlowControl & Market Data
Security
Cybersecurity to prevent unauthorized access to the EMS.
The Voltfang EMS is protected against unauthorized access from the ground up—on three levels.
Air-Gap Principle
Storage and all system components are physically disconnected from the Internet—unauthorized access is structurally impossible.
Controlled Access
Communication exclusively via Voltfang’s proprietary EMS hardware and software: developed in-house and manufactured at our own facility.
Minimal Communication
Only control commands and sensor data are transmitted over the internal connection—this keeps the attack surface to a minimum.
How the EMS Works
From Measurement Data to the Best Schedule
Around the clock, the EMS monitors what’s happening at your site, anticipates future needs, and plans the use of your storage system so that multiple use cases together yield the highest return.
VerbrauchPV-ErzeugungStrompreisPrognoseLadenEntladen
01
Record
The EMS measures generation, consumption, state of charge, and grid draw every second—around the clock. Deviations and errors are immediately detected.
02
Forecast
Forecasts for generation, consumption, and electricity prices are derived from weather, market, and plant data.
03
Optimize and Control
Based on this, the EMS calculates the most economically optimal schedule, combines multiple use cases to maximize savings or revenue, and implements it in real time. If actual conditions deviate from the forecast, it continuously adjusts the schedule.
Web app
Your storage. Your energy management. Everything at a glance.
Our web app is the central platform for managing your energy management—with a real-time overview, smart analysis, and greater control over your storage solution.
Overview of Storage & EMS
System status and control all in one place.
Integrated Devices & Energy Flows
A comprehensive view of all connected producers and consumers.
History
Open, expandable platform—future-proof.
24/7 Monitoring
Access your system anytime—from anywhere.
Frequently Asked Questions About the Energy Management System
An energy management system (EMS) is the central control unit for a battery storage system. It monitors generation, consumption, and market prices and continuously determines when the storage system should charge or discharge. The Voltfang EMS coordinates storage systems, generation facilities, consumers, and the grid connection, and combines multiple use cases to maximize yield.
The Power Plant Integrator is the on-site hardware component of the Voltfang EMS. It connects storage systems, generation facilities, and grid connections to the energy management system, which then controls the facilities as a single system.
Solar power systems, wind farms, solar farms, combined heat and power (CHP) plants, charging stations, and heat pumps, as well as grid connection and the electricity market. The Voltfang-EMS has a modular architecture, allowing additional systems to be integrated at a later date.
For commercial storage systems, this includes, among other things, optimizing self-consumption, peak load shaving, dynamic electricity rates, and intraday trading; for large-scale storage systems, it includes balancing power and trading on the day-ahead and intraday markets. The Voltfang EMS continuously prioritizes use cases based on yield.
Yes. Voltfang’s EMS has open interfaces to popular marketing platforms. Your existing direct marketing partner can be integrated; if you don’t have a partner yet, we can connect you with leading marketing platforms.
Yes. Voltfang is continuously developing the EMS and adapting it to new regulatory requirements. The updates are included in the scope of services.
Yes. The Voltfang EMS adjusts charge and discharge cycles to protect the battery and extend its service life.
Through our web app. There, you can view your charge level, consumption, generation, and active use cases in real time, compare historical data, and download data.