1Komma5°

What 1Komma5° does

1Komma5° (1KOMMA5° GmbH) is a Hamburg-based CleanTech company founded in 2021 by ex-Tesla manager Philipp Schröder, CFO Micha Grüber, and co-founders Jannik Schall, Philip Liesenfeld, and Sascha Koppe. The company sells and installs integrated residential energy systems — rooftop solar (Full Black TOPCon modules, including R-290 / TopCon variants manufactured with Wacker polysilicon), modular lithium-iron-phosphate battery storage (Heartbeat Battery), heat pumps (including Daikin units), EV wallboxes, hybrid inverters, and air conditioning — directly to homeowners across seven countries (Germany, Sweden, Finland, Denmark, the Netherlands, Spain, and Australia), with 3,000+ employees, 75+ German locations, and 80+ regional Meisterbetriebe (master craftsman operations) handling installation and service.

The company's technology core is Heartbeat AI, a proprietary energy-management platform that orchestrates solar generation, battery charge/discharge, heat-pump and EV-charging loads, and dynamic electricity tariffs (Dynamic Pulse, priced from 0 ct/kWh in low-price windows) for ~300,000 connected systems, and aggregates them into a residential Virtual Power Plant that has reached 1 GW of flexible capacity (500 MW connected) and delivers FCR-D frequency-control services in Sweden. ~200 developers at the Berlin TechLab build and train the platform, which integrates with the European wholesale Day-Ahead and Intraday markets, smart-meter gateways, and partner hardware (Tesla Powerwall 3, Sungrow, Enphase).

Revenue is generated across multiple streams: one-time hardware sales and turnkey installation (the largest, dominant stream at EUR 520 million FY2024 revenue), recurring software/SaaS subscriptions via Heartbeat AI and Dynamic Pulse, customer financing (EUR 1bn facility at 5.99% interest, up to 12-year terms) and grid-services / VPP wholesale revenues. B2C residential is the primary segment, with adjacent B2B (industrial customers such as Galfer in Spain) and public-sector (560 state-owned buildings in Lower Saxony, EUR 500m facility) expansion. Distribution combines a self-serve direct website (1komma5.com) with a dense physical installer footprint, supported by KfW subsidy processing, country-specific financing partners (Cetelem, BBVA, Sabadell Consumer in Spain), and in-house lead generation.

Name

1Komma5°

Legal name

1KOMMA5° GmbH

Website

https://1komma5.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

1Komma5° is a Hamburg-based home-electrification and CleanTech company that designs, finances, and installs integrated solar, battery, heat-pump, and EV-charging systems for residential customers across seven European countries and Australia, with its Heartbeat AI platform aggregating ~300,000 connected systems into a 1 GW residential Virtual Power Plant.

Ownership category

akta.pro rank

Product category

Residential Clean Energy Services

NAICS

Solar Electric Power Generation (221114), Electric Power Generation (22111), Electric Power Distribution (221122)

SIC

Services-Computer Integrated Systems Design (7373), Switchgear & Switchboard Apparatus (3613), Auto Controls For Regulating Residential & Comml Environments (3822)

akta.pro primary industry

SCADA/DMS/OMS Integration, Upgrades & Managed Services (EUAEANAE)

akta.pro secondary industries

Distributed Storage (Behind-the-Meter Batteries) (EUAMAJAE), Microgrid O&M, Monitoring & Asset Management Services (EUAFAJAJ)

Keywords

• Residential solar energy
• Home battery storage
• Heat pump installation
• Virtual power plant
• AI energy management

Headquarters

HQ city

Hamburg

HQ country

Germany

HQ region

Europe

Offices12 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Hardware sales and installation: One-time sale and installation of solar PV systems, batteries, heat pumps, hybrid inverters and EV wallboxes to residential and commercial customers; revenue recognized on commissioning of each system.
2. Installation and professional services: Turnkey installation, commissioning and after-sales service delivered via 80+ regional Meisterbetriebe and country-specific installation partners; often bundled with hardware sales.
3. Heartbeat AI / Dynamic Pulse subscription: Recurring software/SaaS revenue from the Heartbeat AI energy manager and the Dynamic Pulse dynamic-tariff product, which optimizes self-consumption and provides electricity from 0 cents/kWh in low-price windows.
4. Customer financing program: EUR 1 billion in-house financing scheme (with banking partners) offering 0% upfront investment, monthly installments at 5.99% interest, and terms up to 12 years / 144 months for residential customers; backed by a separate EUR 500 million facility with NORD/LB and Deutsche Bank for public-sector projects.
5. Grid services / VPP wholesale revenues: Wholesale and grid-services revenue from aggregated flexible capacity (1 GW VPP, 500 MW connected) including frequency containment reserve (FCR-D) in Sweden and intraday/spot market optimization via 15-minute trading intervals.

Pricing tiers

Go-to-market motion1 record

Distribution channels7 records

Marketing channels11 records

Core offering

1Komma5° is a home electrification and climatetech company that sells and installs integrated residential energy systems — rooftop solar PV, modular lithium-iron-phosphate battery storage, hybrid inverters, heat pumps, EV wallboxes and air conditioning — bundled with Heartbeat AI, a proprietary energy-management software that orchestrates these assets and aggregates them into a 1 GW residential Virtual Power Plant. Turnkey installation is delivered through 80+ regional Meisterbetriebe in Germany plus showrooms in Spain, Australia, the Nordics and the Benelux, with in-house and bank-backed customer financing and a dynamic electricity tariff (Dynamic Pulse).

Product overview

1Komma5° delivers a platform-plus-modules residential new-energy ecosystem anchored by Heartbeat AI, its proprietary AI energy intelligence and residential virtual-power-plant software. The integrated hardware suite includes the 1KOMMA5° Full Black TOPCon Solaranlage, the modular 1KOMMA5° Battery, Wärmepumpe (including R-290 models), Wallbox, Klimaanlage, and 1KOMMA5° Single-Phase and 3-Phase Hybrid Inverters. The software stack adds Dynamic Pulse (a dynamic electricity tariff priced from 0 ct/kWh) and the Heartbeat App for monitoring and control. In Australia the portfolio is extended with the New Energy Bundle™ (combined solar + battery + EV solution), Heat Pump Hot Water, the re-sold Tesla Smart Energy Solutions (Tesla Powerwall 3), and the 1K5° Care 30-year workmanship program. All components are installed by 80+ 1KOMMA5° regional master-craft operations across seven markets (Germany, Sweden, Finland, Denmark, the Netherlands, Spain/Catalonia, and Australia), with Heartbeat AI aggregating the distributed residential assets into one of Europe's largest residential virtual power plants (1 GW of flexible capacity reached in 2026).

Differentiator

Problem solved

Functional benefit

Brands

• Heartbeat AI: 1KOMMA5°'s proprietary AI-based energy intelligence platform / virtual power plant software that connects and optimizes solar, battery, heat pump and EV charging assets and connects households to the electricity market in real time.
• Dynamic Pulse
• 1K5° Care

Products and services

• Heartbeat AI Proprietary AI-based energy-management SaaS platform that connects distributed residential assets (solar, battery, heat pump, EV charger) to wholesale electricity markets in real time, optimizing self-consumption and aggregating households into a 1 GW Virtual Power Plant. Available to residential and commercial customers as part of every 1KOMMA5° system.
• Dynamic Pulse Dynamic electricity tariff for households and businesses that sources power from the cheapest and cleanest hours of the wholesale market, priced from 0 ct/kWh during high-renewable/low-price windows; integrated with Heartbeat AI.
• 1KOMMA5° Solaranlage (Full Black TOPCon Solar System) Residential rooftop solar PV system using 1KOMMA5° Full Black TOPCon double-glass modules (up to 450 W per panel), with 30-year product and performance warranty guaranteeing energy generation at ~5 ct/kWh; designed and manufactured in Germany.
• 1KOMMA5° Battery (1K5 Battery) Modular, stackable lithium-iron-phosphate residential battery with proprietary Micro-Cycle Technology (4,000–5,000 cycles), expandable up to 41.9 kWh with up to 20.16 kW charging power; integrates with Heartbeat AI for VPP-aware charge/discharge orchestration. Available with or without solar PV.
• Wärmepumpe (Heat Pump) Air-source heat pump (Luft-Wasser-Wärmepumpe) using natural R-290 refrigerant, eligible for the German KfW 458 subsidy (up to 70% covered) and integrated with Heartbeat AI for demand-side optimization; delivers up to 5x efficiency vs. conventional heating.
• Wallbox (EV Charger) Smart residential EV charging wallbox controlled by Heartbeat AI to charge EVs using surplus solar generation or cheapest grid electricity; available standalone or as part of an integrated 1KOMMA5° system.
• Klimaanlage (Air Conditioning) Energy-efficient split and ducted air-conditioning systems for residential customers, controllable via Heartbeat AI to minimize operating costs and integrate with solar generation.
• 1KOMMA5° Hybrid Inverter (Single-Phase and 3-Phase) Single-phase and three-phase hybrid inverters with 5–15 kW input/output capacity, up to 4 MPPTs, IP65 outdoor durability and 10-year warranty; enable solar + battery + EV charger integration in a single device and are compatible with the 1K5 Battery and Heartbeat AI.
• Heat Pump Hot Water Heat-pump hot-water system that extracts heat from ambient air to heat water, designed to achieve near-zero operating costs when paired with 1KOMMA5° solar generation; sold primarily in the Australian market.
• New Energy Bundle™ Australia-specific bundled solution combining 1KOMMA5° solar, battery storage, EV charging and Heartbeat AI into a single integrated residential energy system with one-stop-shop delivery.
• 1K5° Care Post-installation support program offering a 30-year workmanship guarantee, a New Energy Check service and Australian-based customer support for installed 1KOMMA5° systems.
• Tesla Smart Energy Solutions (Tesla Powerwall 3) Tesla Powerwall 3 and Tesla Powerwall 3 Expansion Pack offered as part of the Australia product lineup, integrated into 1KOMMA5°'s New Energy ecosystem and orchestrated by Heartbeat AI.
• Heartbeat App Mobile application giving customers real-time visibility into their Heartbeat AI-controlled energy system, including current dynamic electricity price, solar yield, battery state of charge and historical performance.

Quantifiable outcome

• €520M revenue in 2024, with ~36% (~€490M) organic growth
• +9 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration15 records

AI capability5 records

Feature7 records

Partnerships

Ten partnerships are on record, tiered core, minor and flagship.

• SungrowcoreTechnology or IntegrationInverter technology partner; Sungrow recognizes 1KOMMA5° as the only 'Power Partner Certified Installer' in Spain, indicating a strategic installer–supplier relationship for hybrid inverter deployments.
• EnphasecoreTechnology or IntegrationMicroinverter and battery technology partner; Enphase has placed 1KOMMA5° in its highest installer tier, the Platinum Installer category, in Spain.
• DaikincoreTechnology or IntegrationHeat-pump manufacturer whose products are installed by 1KOMMA5° under the Daikin brand; referenced as the heat-pump supplier for residential installations.
• Tesla (Smart Energy Solutions / Powerwall 3)coreOEM/ Whitelabel/ Licensing PartnerProduct partner in Australia — 1KOMMA5° New Energy Bundle™ integrates Tesla Smart Energy Solutions including the Powerwall 3 home battery.
• Wacker (Wacker Chemie)coreTechnology or IntegrationPolysilicon supplier whose material is used in 1KOMMA5°'s Full Black TopCon solar modules.
• New Energy Alliance (with Elli / Volkswagen Group)coreStrategic or Co-development PartnerCo-development partner in joint studies with Volkswagen's Elli charging brand exploring EV charging, dynamic tariffs and residential flexibility use cases.
• Geelong Cats (AFL)coreGTM or Marketing PartnerSports-marketing partnership with the AFL's Geelong Cats, used as a brand-awareness and community-engagement channel for 1KOMMA5° in Australia.
• ContribeminorGTM or Marketing PartnerDenmark-based donation and impact partner; 1KOMMA5° customers can donate a portion of their system value to social/environmental causes via Contribe.
• Natural Solar (Australia)flagshipStrategic or Co-development PartnerAcquired by 1KOMMA5° for >€65M to establish the Australian business; Natural Solar's installer footprint became the basis of 1KOMMA5°'s Top-5 National Installer presence.
• EUPD ResearchminorStrategic or Co-development PartnerIndependent analyst firm whose Top Brand PV Installer and Marktführer awards validate 1KOMMA5°'s market position across Europe.

Scale indicators25 records

Recent moves11 records

Expansion highlights8 records

Direct peers

• Enpal: Berlin-based residential solar leasing and home battery installer operating in Germany with a similar one-stop-shop model; the most direct head-to-head competitor to 1Komma5° in German rooftop solar + storage + heat pump + EV charging.
• Zolar: German online solar marketplace and installer connecting homeowners to regional craftsmen for PV, battery and heat pumps; comparable go-to-market (direct-to-consumer + regional installer network) and customer base.
• Solarwatt: German manufacturer and installer of glass-glass solar modules and home battery storage systems with BMW i Ventures backing; competes with 1K5° on premium residential solar + battery hardware in Germany and Europe.
• Sonnen (Shell): German residential battery storage pioneer (now owned by Shell) operating a virtual power plant across thousands of homes; directly comparable VPP business model and target customer.

Emerging players

• Octopus Energy: UK-headquartered retail energy supplier with a strong dynamic-tariff and Kraken platform presence, now expanding into Germany; comparable as a tech-enabled energy retailer with smart-tariff/VPP ambitions targeting similar residential decarbonization outcomes.
• Tibber: Nordic digital energy retailer offering dynamic wholesale-priced electricity tariffs and home device optimization; overlaps with 1K5° Dynamic Pulse and Heartbeat AI in Sweden, Germany and other European markets.

Broad incumbents

• E.ON (E.ON Home): One of Europe's largest utilities with residential solar, heat pump, EV charging and home energy management offerings; competes with 1K5° at scale across Germany but as part of a much broader energy portfolio.
• EnBW (EnBW Home): German utility with significant residential solar, heat pump, EV charging and virtual power plant initiatives; offers overlapping integrated solutions to homeowners but as a diversified incumbent.
• Tesla Energy: Global residential battery and solar business (Powerwall 3, Solar Roof) with growing VPP ambitions; a key technology partner for 1K5° in Australia and a global benchmark for residential energy + AI integration.

Regional players

• Holaluz: Spanish residential solar installer and green-tariff retailer; comparable as a Southern European residential solar specialist, though focused primarily on the Iberian market where 1K5° also operates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat8 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/1KOMMA5GRAD
• YouTubeyoutube.com/channel/UCTAtMPLESVeO1JQFia54Riw
• Facebookfacebook.com/1KOMMA5GRAD
• LinkedInlinkedin.com/company/1komma5grad
• Instagraminstagram.com/1komma5_com

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries2 records

Funding overview

Funding rounds9 records

Investors19 records

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

M&A1 record

Investments

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

Frequently asked questions about 1Komma5°