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Awatt Electronic

HEMS PRO

The universal energy management system for solar PV, batteries, EV charging and heat pumps.

§14a EnWG & §9 EEGControl box & EEBUS
Regular price €400,00 EUR
Regular price Sale price €400,00 EUR
Sale Sold out
Including 0% VAT, free shipping for orders according to §12 para. 3 UStG (German VAT Act).
For you to benefit from the zero tax rate under Section 12 Paragraph 3 No. 1 of the German VAT Act (UStG) when placing your order with us, the following conditions must be met:

  • Solar modules are supplied to the operator of a photovoltaic system, including the essential components for operating a photovoltaic system, and the storage unit used to store electricity generated by solar modules, if the photovoltaic system is installed on or near private residences, apartments, as well as public and other buildings used for activities serving the public good. These conditions are considered fulfilled if the installed gross capacity of the photovoltaic system, according to the Market Master Data Register, does not exceed or will not exceed 30 kilowatts (peak).
  • The operators of the photovoltaic system are natural persons, legal entities, or associations of persons who, in principle, are required to register as operators in the MAStR (Market Master Data Register) at the time of delivery. Actual registration in the MAStR (e.g., in the case of balcony power plants) is not decisive for operator status.
  • You provide us with proof that the conditions for applying the zero tax rate are met. It is sufficient if you, as the purchaser, declare in writing that you are the operator of the photovoltaic system and that it is an eligible building, or that the installed gross capacity of the photovoltaic system, according to the MAStR, does not exceed or will not exceed 30 kW (peak).

Should it subsequently become apparent that these conditions are not met despite your confirmation (e.g., through an external audit), you agree to the subsequent invoicing of the underpaid value-added tax.

Including 0% VAT, free shipping for orders according to §12 para. 3 UStG (German VAT Act).
For you to benefit from the zero tax rate under Section 12 Paragraph 3 No. 1 of the German VAT Act (UStG) when placing your order with us, the following conditions must be met:

  • Solar modules are supplied to the operator of a photovoltaic system, including the essential components for operating a photovoltaic system, and the storage unit used to store electricity generated by solar modules, if the photovoltaic system is installed on or near private residences, apartments, as well as public and other buildings used for activities serving the public good. These conditions are considered fulfilled if the installed gross capacity of the photovoltaic system, according to the Market Master Data Register, does not exceed or will not exceed 30 kilowatts (peak).
  • The operators of the photovoltaic system are natural persons, legal entities, or associations of persons who, in principle, are required to register as operators in the MAStR (Market Master Data Register) at the time of delivery. Actual registration in the MAStR (e.g., in the case of balcony power plants) is not decisive for operator status.
  • You provide us with proof that the conditions for applying the zero tax rate are met. It is sufficient if you, as the purchaser, declare in writing that you are the operator of the photovoltaic system and that it is an eligible building, or that the installed gross capacity of the photovoltaic system, according to the MAStR, does not exceed or will not exceed 30 kW (peak).

Should it subsequently become apparent that these conditions are not met despite your confirmation (e.g., through an external audit), you agree to the subsequent invoicing of the underpaid value-added tax.

Incl. 19% VAT, free shipping
Tax rate
In stockDelivery: 2–3 working days
Try the demo first, then buy
  • No subscription or hidden costs
  • No external power supply
  • Local control
Datenblatt & Anleitung
View full details
UNIVERSAL EMS

One controller. Your whole home.

Solar surplus charging, batteries, heat pumps and dynamic energy tariffs: HEMS PRO connects compatible energy devices.

GRID OPERATOR CONNECTION

§14a EnWG. §9 EEG.

Grid consumption and feed-in control in one device. Control box and EEBUS connection; SG-Ready signals via the potential-free relay contact.

COMPACT IN THE CABINET

4 DIN modules. No external power supply.

For a 35 mm DIN rail, powered directly by 230 V. Local operation without a subscription or hidden HEMS fees.

ENERGY MANAGEMENT IN DETAIL

More self-consumption. Less grid electricity.

Das Home Energy Management System (HEMS) optimiert den Energiefluss im Haus, um die Eigenstromnutzung zu erhöhen und Netzbezugskosten zu minimieren.

Maximieren Sie Ihre Eigenverbrauchsquote und senken Sie Ihre Stromkosten nachhaltig mit der smarten HEMS App Steuerung.

Vollständige Compliance & Kontrolle: Ihre All-in-One Lösung, die bereits heute voll kompatibel mit § 9 EEG und § 14a EnWG ist – für eine rechtssichere Steuerung durch den Netzbetreiber (BNetzA).

Maximale Ersparnis durch Dynamik: Nutzen Sie dynamische Stromtarife ohne versteckte Abo-Kosten, um dann zu laden, wenn der Strom an der Börse am günstigsten oder die Sonne am kräftigsten ist.

Datenschutz "Made in Germany": Profitieren Sie von lokaler Datenhaltung auf deutschen Servern. Ihre Verbrauchsdaten bleiben privat und sicher in Ihren Händen.

The HEMS Pro is a highly advanced, fully German-developed energy management system (EMS) that intelligently connects your photovoltaic system with the major energy consumers in your household. As a compact, local system for DIN rails, the HEMS Pro forms the central core of efficient and future-proof energy distribution – without cloud dependency, without subscription models, and exclusively with German servers.

The HEMS Pro is the perfect solution for implementing the requirements of §14a EnWG and §9 EEG, ensuring standard-compliant, intelligent control of controllable consumption devices. Furthermore, it supports dynamic electricity tariffs without us charging any fees or commissions. Through its community network, the HEMS Pro can be connected to almost any device in the household, if desired.

Awatt Electronic ensures continuously growing compatibility with devices and systems from all manufacturers through regular software updates. Thanks to community-based software development, the range of functions is constantly being expanded – practical, flexible, and future-oriented.

EIN GERÄT. VIELE MÖGLICHKEITEN.

So wird aus Energie
mehr für Ihr Zuhause.

HEMS PRO verbindet kompatible Komponenten und macht Ihr Energiemanagement übersichtlich.

Mehr Sonne im eigenen Zuhause.

PV-Überschüsse gezielt für das Laden Ihres Elektroautos und weitere kompatible Verbraucher einsetzen.

Günstige Zeitfenster nutzen.

Mit einem dynamischen Stromtarif flexible Verbräuche in günstigere Zeitfenster verschieben.

Ein Überblick über Ihre Energie.

Erzeugung, Verbrauch und Ladezustand in einer gemeinsamen Oberfläche sehen.

Ihre Steuerung bleibt lokal.

HEMS PRO arbeitet als lokales System im Haus und kommt ohne verpflichtendes Abo aus.

KOMPAKT. DURCHDACHT.

Kompakt montiert.
Gut verbunden.

HEMS PRO wird auf der 35-mm-Hutschiene im Schaltschrank montiert. Ethernet und WLAN verbinden das Gerät mit Ihrem Heimnetz; RS485 steht für passende Geräteverbindungen zur Verfügung.

Steuerbox und EEBUS verbinden HEMS PRO mit der netzorientierten Steuerung nach §14a EnWG und der Einspeisesteuerung nach §9 EEG. Die SG-Ready-Anbindung erfolgt über Relaiskontakte nach Anschlussplan und Konfiguration. Das integrierte Relais ist im dokumentierten Image für die Netzbetreibersteuerung reserviert.

Den elektrischen Anschluss übernimmt Ihr Elektrofachbetrieb.

Montage
35-mm-Hutschiene
Abmessungen
71 × 90 × 59 mm · 4 TE
Stromversorgung
230 V / 50 Hz · ohne externes Netzteil
Verbindung
Ethernet, WLAN und RS485
Relaisausgang
1 potenzialfreier Wechselkontakt (COM / NC / NO), für Netzbetreibersteuerung reserviert
SG-Ready
Relaisanbindung nach Anschlussplan und Konfiguration
Netzbetreiber-Anbindung
§14a EnWG & §9 EEG · Steuerbox und EEBUS
Umgebungstemperatur
0 bis +55 °C
Gewicht
315 g
VON DER PLANUNG ZUM ZUSAMMENSPIEL

Gut vorbereitet.
Sauber eingerichtet.

Installationsanleitung öffnen
01

Komponenten abstimmen

Ihre PV-Anlage, Wallbox, Speicher und weitere Geräte in der Herstellerübersicht suchen.

Zur Übersicht
02

Fachgerecht installieren

Den elektrischen Anschluss und die Montage auf der Hutschiene übernimmt Ihr Elektrofachbetrieb.

Für Fachbetriebe
03

Ihr Zuhause einrichten

Die Oberfläche im Heimnetz öffnen, Geräte verbinden und Ihre Einstellungen anpassen.

Oberfläche kennenlernen
IHR NÄCHSTER SCHRITT

Ihr Energieplan
beginnt hier.

Entdecken Sie HEMS PRO und prüfen Sie die Kompatibilität Ihrer Geräte.

HEMS PRO – Front mit leuchtenden LEDs

TRY THE DEMO. THEN DECIDE.

From Fast to PV. With one tap.

Charge straight away or use your own solar power: choose a charging mode in the HEMS App and see how the energy flow changes.

Try switching charging modes in the original demo.

Try the HEMS App

The free demo opens an example installation. It does not connect to your devices.

Original App · Example dataExplore the full demo Open demo in a separate window

YOUR ENERGY AT A GLANCE. WHEREVER YOU ARE.

One app for your energy management.

View energy flows, use solar power and plan charging times on your phone, tablet or computer.

Original app screenshots. Language, example data and available features may vary with software version and configuration.

Forget cluttered dashboards and complicated configurations. With Awatt Electronic's modern HEMS App, you have a clear overview of all your energy flows at all times. Our intuitive energy management software allows you to create smart charging plans for your electric car, control the prioritization of your home battery, and view detailed cost analyses per vehicle. As a perfect, user-friendly EVCC alternative, our wallbox control app combines complex sector coupling with easy operation directly on your smartphone – for maximum control and absolute transparency when it comes to reducing electricity costs.

Symbole für BNetzA-Konformität sowie § 9 EEG und § 14a EnWG Kompatibilität des HEMS PRO.

All-in-One Solution - Compatible with § 9 EEG & § 14a EnWG

The HEMS PRO is fully compatible with § 9 EEG & § 14a EnWG and meets all requirements of the BNetzA. As a specialized HEMS provider, we rely on local data storage & German servers. This means for you: Full control without cloud compulsion. Our energy management software enables you to lower electricity costs and offer dynamic electricity tariffs, all without hidden costs or subscriptions, or even intelligent charging of your electric car.

Illustration für lokale Datenhaltung und Datensicherheit auf deutschen Servern für das HEMS System.

Local Data Storage & German Servers: 100% Data Security for Your HEMS Pro

With HEMS Pro, you maintain full control over your privacy. Our energy management system stores all consumption and user data exclusively locally on your device – no insecure data storage or processing takes place in the cloud. For your convenient and strongly encrypted remote access on the go, we exclusively use German servers located in Frankfurt am Main. This way, you benefit from intelligent energy management with uncompromising data protection.

Icon für dynamische Stromtarife ohne Abo-Kosten zur Senkung der Stromkosten mit HEMS.

Intelligently Utilize Dynamic Electricity Tariffs – Completely Without a Subscription

Maximize your energy savings: HEMS Pro seamlessly integrates dynamic electricity tariffs into your smart energy management. Your crucial advantage? We completely forgo hidden running costs or annoying monthly fees. All innovative functions for automated price optimization are available to you permanently, in full, and 100% free of charge – guaranteed without a subscription model. This way, your system pays for itself even faster!

Become a corporate customer now

And benefit from the best conditions

Intelligently use dynamic electricity tariffs – completely without a subscription

Maximize your energy savings: HEMS Pro seamlessly integrates dynamic electricity tariffs into your smart energy management. Your crucial advantage? We completely forgo hidden recurring costs or annoying monthly fees. All innovative features for automated price optimization are available to you permanently, in full, and 100% free of charge – guaranteed without a subscription model. This way, your system pays for itself even faster!

Smart PV surplus charging: Automatic charging when the sun shines

€

Utilize the full potential of your solar power system: With the intelligent wallbox control of the HEMS Pro, the charging process of your electric car starts fully automatically as soon as sufficient self-produced solar power is generated. The system continuously and in real time adjusts the charging power to the currently available PV surplus. Through this smart sector coupling, you avoid expensive grid electricity, maximize your self-sufficiency, and can sustainably reduce your electricity costs.

  • Next-generation energy management software

    Our energy management software offers an intuitive user interface that keeps you informed about all flows. Whether you are looking for a solution for Home Assistant HEMS or need a professional energy management system for a PV system – HEMS PRO is the answer.

  • Reduce electricity costs with dynamic tariffs

    Our dynamic electricity tariff experiences show: those who consume electricity when it is abundant save massively. The HEMS
    PRO supports dynamic electricity tariffs natively and without monthly surcharges. It automatically detects dynamic tariffs and optimizes
    the operation of your heat pump or electric car.

  • HEMS Comparison: HEMS PRO vs. Competitors

    The HEMS PRO stands out due to its open nature, as it is not tied to subscriptions. While systems like E.ON HEMS, Viessmann HEMS, Thermondo HEMS, or HEMS Schneider Electric are often bound to proprietary manufacturer ecosystems, AWATT focuses on flexibility. We
    offer a solution that can even be used as a near HEMS Open Source alternative for hobbyists (e.g., via HEMS Home Assistant), but still offers the reliability of a premium product.

  • Supported Components

    PV & Storage

    • Inverters from leading manufacturers

    Mobility

    • HEMS Wallbox Integration & Electric Vehicles

    Heating

    • Heat pumps & smart heating elements

    Interfaces

    • Local API, Cloud connectivity

Frequently Asked Questions (FAQ)

What exactly is HEMS? What is a HEMS?

A Home Energy Management System optimizes the energy flow in the house to increase
self-consumption and minimize grid electricity costs.

Why should I choose HEMS Pro from AWATT?

As a specialized HEMS provider, we offer you a solution without a subscription trap, with a focus on data protection and full compatibility with German grid regulations (§14a EnWG).

Is the system compatible with my PV system?

The HEMS PRO is designed as a universal energy management system and
supports a variety of components via standard interfaces.

How does the HEMS help me save electricity?

By using dynamic electricity tariffs, the system charges your storage
when the price is lowest – often even with negative electricity prices.

VOR DEM KAUF

Alles klar
für HEMS PRO?

Was macht HEMS PRO?+
HEMS PRO verbindet kompatible Energiekomponenten zu einem zentralen System. Es zeigt Energieflüsse und unterstützt die gezielte Nutzung von PV-Überschüssen sowie die Planung flexibler Stromverbräuche.
Brauche ich eine PV-Anlage?+
Auch ohne eigene PV-Anlage können kompatible Verbraucher zusammen mit einem dynamischen Stromtarif gesteuert werden. Welche Funktionen verfügbar sind, hängt von den angeschlossenen Geräten und Ihrem Tarif ab.
Kann ich die Oberfläche vorab ausprobieren?+
Ja. Die Demo zeigt eine Beispielinstallation, in der Sie die Oberfläche und Ladefunktionen kennenlernen können.
Brauche ich ein Abo?+
Für HEMS PRO benötigen Sie kein Abo. Kosten Ihres Stromtarifs sowie gegebenenfalls benötigter Drittanbieter-Dienste gehören nicht zum Gerätepreis.
Wer installiert HEMS PRO?+
Das Gerät wird auf der Hutschiene montiert und mit 230 V versorgt. Den elektrischen Anschluss übernimmt ein Elektrofachbetrieb. Die weitere Einrichtung erfolgt anhand der Installationsanleitung.
Welche Geräte kann ich einbinden?+
Die Kompatibilitätsübersicht hilft Ihnen, unterstützte Hersteller und Integrationen zu finden. Wenn Sie Ihre Komponenten bereits kennen, können Sie uns diese vor dem Kauf über das Kontaktformular nennen.
Wie werden §14a EnWG und §9 EEG eingebunden?+
HEMS PRO unterstützt die netzorientierte Steuerung und Einspeisesteuerung über Steuerbox-Anbindung und EEBUS. Ihr Fachbetrieb stimmt die Einrichtung mit den Schnittstellen Ihrer Anlage und den Vorgaben Ihres Netzbetreibers ab.
Wie funktioniert der SG-Ready-Relaiskontakt?+
Die SG-Ready-Anbindung erfolgt über Relaiskontakte nach dem zur Hardwareversion passenden Anschlussplan und der Konfiguration. Das integrierte Relais ist im dokumentierten Image für die Netzbetreibersteuerung reserviert. Für alle vier SG-Ready-Betriebszustände sind zwei getrennte Kontakte erforderlich; für den zweiten Steuereingang wird ein separates kompatibles Relais benötigt. Den elektrischen Anschluss übernimmt Ihr Fachbetrieb.