Strong Energy

What Strong Energy does

Strong Energy, legally STRONG Digital GmbH, is a Cologne-based European distributor of solar energy systems, battery storage, and mobile charging products founded in 2023. It operates as the renewable-energy vehicle of the Strong Group, which is in turn controlled by Chinese electronics conglomerate Skyworth (founded 1988, 40,000+ employees globally, 5+ GW of power plant construction experience, and 200,000+ PV systems installed worldwide). Strong Energy's commercial offering spans three categories: residential solar systems anchored by the Red Dot Award 2024-winning Alfred 10 all-in-one battery storage (10 kW inverter, 9.6–24 kWh expandable) and the Hochvolt Bundle; commercial all-in-one storage systems Star Q (50 kW / 109.7 kWh) and Star H (115 kW / 232.5 kWh) built around CATL LFP cells with integrated fire suppression; and a Mobile Charging line of LFP-based portable power stations (300W to 3,000W), folding solar panels, and a 12,000 mAh power bank. All products are managed through the proprietary Strong Energy 360 App (iOS/Android), and the portfolio integrates with Solar Manager, Solis Cloud, and Consolinno CEMS via Modbus TCP for peak-shaving and self-consumption optimization.

The company's core technology is built on Lithium-Iron-Phosphate (LFP) battery chemistry — recognized in the input data as the safest cell chemistry with long cycle life — combined with hybrid inverters from strategic partners Solis and YUNT and CATL-supplied cells for the commercial range. Strong Energy holds TÜV certification, §14a EnWG compliance for German grid-friendly installations, GDPR and GPSR compliance, and a 10-year warranty on batteries and inverters. The Alfred 10 achieves IP65 protection, 10,000 charge cycles, and sub-45-minute install time, while the Star H carries smoke/gas detection and aerosol fire suppression for commercial deployments.

Revenue is generated exclusively through B2B hardware sales via a network of 24+ certified installation partners across Germany, Austria, and Switzerland, with a Premium partner tier offering special contract terms. The company does not sell direct to consumers; instead it supports installers through training programs, German-language technical support, and test centers in Cologne and Berlin. Pricing is not publicly disclosed — all configurations are quoted on request — and the company pursues a sales-led and channel-partner GTM motion with event activation at Intersolar 2024 and 2025, content marketing via blog and the Strong Energy 360 App, and Key Account Management for larger commercial projects.

Name

Strong Energy

Legal name

STRONG Digital GmbH

Website

https://strong-energy.eu

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

11–50 employees

Short description

Strong Energy, a Cologne-based 2023-founded subsidiary of Skyworth's Strong Group, distributes residential solar systems, commercial CATL LFP battery storage, and mobile charging products across Germany, Austria, and Switzerland through 24+ certified installer partners.

Ownership category

akta.pro rank

Product category

Energy Storage Systems

NAICS

Battery Manufacturing (33591)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro industry

PRIMARYEUAFAJAE

Residential & Multi-Family BTM Storage (Home Batteries, Apartment Systems)

Energy, Utilities & Environment/Energy Storage & Grid Flexibility (Batteries, Hydrogen Storage, Demand Response)/Microgrids & Behind-the-Meter (BTM) Storage Solutions

SECONDARYIMAGAHAB

Battery Modules & Packs (Industrial/Commercial pack assembly)

Industrials, Manufacturing & Construction/Electrical Equipment & Industrial Electronics/Batteries, Energy Storage & Charging Equipment (Industrial ESS, chargers)

SECONDARYCRACATAG

Batteries & Battery Packs (Rechargeable/Primary, Device-Specific Packs)

Consumer Products & Retail/Consumer Electronics & Appliances Retail/Power & Charging Accessories (Power Banks, Chargers, Cables, Batteries)

SECONDARYEUAEAEAC

Residential / Behind-the-Meter Storage Installation & Integration

Energy, Utilities & Environment/Energy Infrastructure & Services (EPC, O&M, Field Services)/Energy Storage EPC & Integration (BESS, PCS, EMS)

Keywords

• Residential battery storage
• Commercial energy storage
• Hybrid solar inverters
• Portable power stations
• Photovoltaic system solutions

Headquarters

HQ city

Köln (Cologne)

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Technology or R&D, Marketing or Sales, Personnel, Operations

Revenue model

1. Solar System Sales: Sale of complete solar photovoltaic systems including PV modules, inverters, and mounting equipment for residential, commercial, and industrial applications
2. Energy Storage Battery Sales: Sale of battery storage systems including residential all-in-one units (Alfred 10, Hochvolt Bundle) and commercial storage solutions (Star Q, Star H) with varying capacity levels
3. Mobile Charging Products: Sale of portable power stations and solar panels for outdoor, camping, and mobile applications including Power Bank S-19 and CP series portable power stations
4. Professional Services: Installation services, training for installers, and technical support provided through certified partner network

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels6 records

Core offering

Strong Energy designs and sells residential and commercial Lithium-Iron-Phosphate (LFP) battery storage systems, hybrid inverters, and complete solar packages through a network of certified installer partners in the D/A/CH region. The portfolio spans all-in-one home storage (Alfred 10, Hochvolt Bundle), commercial and industrial storage (Star Q, Star H), and mobile charging products (portable power stations, folding solar panels, power banks), supported by the proprietary Strong Energy 360 App for monitoring and remote management.

Product overview

Strong Energy is a portfolio of energy storage and solar solutions organized across three product worlds: Solaranlagen (solar systems), All-in-One Gewerbespeicher (commercial all-in-one storage), and Mobile Charging (portable power). The residential solar range centers on the Alfred 10 — a Red Dot Award-winning modular all-in-one battery storage system with 10 kW inverter and 9.6–24 kWh expandable storage — and the Hochvolt Bundle combining a three-phase hybrid inverter (8/15 kW) with high-voltage battery (9.4/14 kWh). Commercial storage is anchored by the Star Q (50 kW / 109.7 kWh) and Star H (115 kW / 232.5 kWh), both all-in-one C&I systems with CATL LFP cells and integrated fire suppression, scalable to multiple units. The Mobile Charging line includes portable power stations (CP01ST-300W through CP05ST-3000W), folding solar panels (CS02ST-100W and CS03ST-160W), and a Power Bank S-19, all built on LFP chemistry. All products are monitored and managed through the proprietary Strong Energy 360 App available on iOS and Android. Strong Energy serves as the official European distribution partner for CNTE and CATL commercial storage products.

Differentiator

Problem solved

Functional benefit

Products and services

• Alfred 10 All-in-One Residential Battery Storage System Modular all-in-one residential battery storage system combining a 10 kW hybrid inverter with scalable 9.6–24 kWh capacity, IP65 rating for indoor/outdoor use, black-start emergency backup, AC-coupling, and monitoring via the Strong Energy 360 App; sold through certified installer partners for residential and small commercial customers.
• Hochvolt Bundle (Hybrid Inverter + High-Voltage Battery) Complete residential solar package combining a three-phase hybrid inverter (8 kW or 15 kW) with a high-voltage battery (9.4 or 14 kWh), Smart-Home compatible, §14a EnWG-compliant, Solar Manager ready, with up to 98.2% efficiency and modular expandability; sold through certified installer partners.
• Star Q Commercial Battery Storage System
• Star H Commercial Battery Storage System
• CP05ST-3000W Portable Power Station
• CP03ST-800W Portable Power Station
• CP02ST-500W Portable Power Station
• CP01ST-300W Portable Power Station
• Power Bank S-19 Portable Power Bank
• CS03ST-160W Portable Folding Solar Panel
• CS02ST-100W Portable Folding Solar Panel
• Strong Energy 360 App

Quantifiable outcome

• Up to 98.2% efficiency with Hochvolt Bundle hybrid inverter
• +4 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature6 records

Partnerships

15 partnerships are on record, tiered core, flagship, strategic, premium and standard.

• CNTEcoreTechnology or IntegrationOfficial sales partner for CNTE commercial storage products in Europe. CNTE provides commercial energy storage solutions that Strong Energy distributes through its European partner network.
• CATLcoreTechnology or IntegrationOfficial sales partner for CATL (Contemporary Amperex Technology) battery products in Europe. CATL provides LFP battery cells and modules used in Star H and Star Q commercial storage systems.
• SkyworthflagshipStrategic or Co-development PartnerParent company providing manufacturing capacity, supply chain management, and technology development. Skyworth is a globally recognized consumer electronics company (Smart TVs, set-top boxes) with 40,000+ employees and 5+ GW power plant experience. Strong Energy has unrestricted access to Skyworth's manufacturing and supply chain capabilities.
• YUNTcoreTechnology or IntegrationProvider of MARS-125KT inverter used in Star H commercial storage system, reduced to 115 kW power output.
• SoliscoreTechnology or IntegrationProvider of S6-EH3P50K-H hybrid inverter used in Star Q commercial storage system. Solis EMS and Solis Cloud provide energy management and monitoring capabilities.
• Solar ManagerstrategicTechnology or IntegrationIntegration partnership for Solar Manager compatibility with Strong Energy products. Full integration expected by Intersolar 2025.
• Solarstrom KonzeptepremiumChannel Partner/ Reseller/ DistributorPremium certified installation partner with special contract terms. Located in Germany.
• AmperestandardChannel Partner/ Reseller/ DistributorCertified installation partner for Strong Energy products in Germany.
• BS SunergiestandardChannel Partner/ Reseller/ DistributorCertified installation partner for Strong Energy products in Germany.
• clever-PVstandardChannel Partner/ Reseller/ DistributorCertified installation partner for Strong Energy products.
• Energiekonzepte GärtnerstandardChannel Partner/ Reseller/ DistributorCertified installation partner for Strong Energy products.
• INGENEstandardChannel Partner/ Reseller/ DistributorCertified installation partner for Strong Energy products in Switzerland.
• Solar ManagerstandardChannel Partner/ Reseller/ DistributorInstallation partner with product integration capabilities for Strong Energy solutions.
• SolvigostandardChannel Partner/ Reseller/ DistributorCertified installation partner for Strong Energy products.
• YounergystandardChannel Partner/ Reseller/ DistributorCertified installation partner for Strong Energy products in Switzerland.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Jackery: Leading global portable power station brand with strong consumer brand recognition in Europe. Directly comparable to Strong Energy's Mobile Charging product line (CP-series portable power stations and foldable solar panels).

Broad incumbents

• Enphase Energy: Global incumbent in microinverters and increasingly in residential battery storage (IQ Battery) with strong installer-led go-to-market. Comparable to Strong Energy in channel reliance and residential storage focus, but at much greater scale and breadth.
• Sungrow: Global inverter and stationary storage manufacturer with strong European C&I and utility-scale presence. Comparable to Strong Energy's Star Q/H commercial storage line, with established inverter IP that Strong Energy sources from partners like YUNT and Solis.
• SolarEdge: Global incumbent in solar inverters now expanding into residential and C&I battery storage (Energy Bank). Larger, broader portfolio than Strong Energy but overlapping in inverter + storage bundles for D/A/CH residential and commercial projects.
• Huawei FusionSolar: Global smart PV and residential/C&I storage provider (LUNA2000, Smart String ESS) with growing DACH presence through installer networks. Broad incumbent comparable to Strong Energy's full residential-to-commercial storage portfolio, with significantly greater scale.

Direct peers

• Sonnen (sonnen GmbH): German residential battery storage specialist (now owned by Shell) offering all-in-one home storage systems and a virtual power plant. Most direct European peer to Strong Energy's Alfred 10 and Hochvolt Bundle product line, serving the same DACH residential and small commercial segment via installer channels.
• SENEC (EnBW subsidiary): German residential battery storage brand owned by utility EnBW, offering all-in-one home storage and a virtual power plant program. Competes head-to-head with Strong Energy's Alfred 10 in the German residential market, leveraging EnBW's utility customer base.
• BYD Battery-Box: Global leader in residential and commercial LFP-based battery storage, with a large installed base in Europe including DACH. Direct competitor to Strong Energy's Alfred 10 and Star Q/H across both residential and C&I storage, especially given shared LFP chemistry.
• E3/DC (Hager Group): German residential and small commercial storage and solar inverter manufacturer known for high efficiency and sector coupling. Sells primarily through certified installer partners in Germany, directly comparable to Strong Energy's D/A/CH channel strategy and product positioning.
• Tesla (Powerwall): Leading premium residential battery storage system with integrated inverter and mobile app. Competes with Alfred 10 in the premium residential segment in D/A/CH and is increasingly expanding into C&I with Powerpack/Megapack, paralleling Strong Energy's residential-to-C&I ladder.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks4 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/strongenergygroup

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Strong Energy