Grünwelt Wärmestrom GmbH

What Grünwelt Wärmestrom GmbH does

Grünwelt Wärmestrom GmbH is a privately held German energy retailer headquartered in Kaarst, North Rhine-Westphalia, operating nationwide under the consumer brand Grünwelt Energie. The company sells 100% renewable electricity sourced from European hydroelectric power and TÜV NORD-certified annually, CO2-neutral natural gas offset through UNFCCC-registered climate projects, and specialized Wärmestrom (heat-pump and night-storage heating) electricity tariffs. The portfolio comprises 19+ standardized retail tariffs organized into three product families — Ökostrom (including Strom Easy, Strom Bonus, Strom Classic, Strom Business, Grünwelt Flex dynamic, and Ladestrom EV), Wärmestrom (Easy 12/24, Bonus, Classic), and Ökogas (Gas Easy, Gas Bonus, Gas Classic, Gas Business).

The business model is direct-to-consumer and digital-first: customers self-serve through an online tariff calculator on gruenwelt.de, complete a 5-step online switch, and manage accounts through dedicated customer portals, with phone-based customer service as a fallback. Revenue is recurring subscription-based with monthly Abschlag (advance payments) and annual consumption-based true-ups, supplemented by a usage-based dynamic tariff (Grünwelt Flex) tied to EPEX Spot SE quarter-hourly prices for smart-meter customers. The company operates with an exceptionally lean team of 9 employees, suggesting heavy reliance on outsourced operations, payment processing (Novalnet AG), credit checks (SCHUFA, Creditreform), and collections (Tesch Inkasso).

Grünwelt has accumulated an extensive awards portfolio — including repeated top rankings from ServiceValue, FOCUS MONEY, BILD, DIE WELT, and F.A.Z.-Institut — positioning it as one of Germany's most awarded eco-energy providers. The company operates a wholly-owned charitable foundation (Grünwelt-Stiftung gGmbH, established December 2018) that partners with major humanitarian organizations, reinforcing an ESG-led brand narrative. Founded in 2015 and led by Managing Director (Geschäftsführer) Tolga Ardali, Grünwelt is closely held with no disclosed institutional investors, parent company, funding rounds, M&A activity, or patent portfolio.

Name

Grünwelt Wärmestrom GmbH

Legal name

Grünwelt Wärmestrom GmbH

Website

https://gruenwelt.de

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

1–10 employees

Short description

Grünwelt Wärmestrom GmbH is a German retail energy provider selling TÜV NORD-certified green electricity, CO2-neutral gas, and heat-pump electricity tariffs directly to residential and small-business customers nationwide through a digital self-serve platform.

Ownership category

akta.pro rank

Headquarters

HQ city

Kaarst

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Electricity Sales: Sale of TÜV NORD-certified green electricity to residential and commercial customers across Germany. Includes standard tariffs, bonus tariffs, and heat pump electricity products. Revenue generated through monthly advance payments (Abschlag) and annual consumption-based billing.
2. Gas Sales: Sale of CO2-neutral natural gas to residential and commercial customers. Gas consumption is offset through climate protection projects. Revenue generated through monthly advance payments and annual consumption-based billing.
3. Heat Pump Electricity (Wärmestrom): Specialized electricity tariffs for customers with night storage heaters and heat pumps. Features reduced night-time rates for heat pump usage. Revenue generated through dual-tariff or single-tariff billing depending on meter configuration.
4. Dynamic Electricity Tariff: Dynamic electricity tariff (Grünwelt Flex) for customers with smart meters, passing through quarter-hourly variable procurement costs from EPEX Spot SE plus handling fees.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Grünwelt Wärmestrom GmbH retails TÜV NORD-certified 100% renewable electricity (Ökostrom), heat pump and night storage electricity (Wärmestrom), and CO2-neutral natural gas (Ökogas) to residential and commercial customers across Germany. Customers self-select from a portfolio of fixed-price and dynamic tariffs (12- or 24-month price guarantees with varying bonus structures), order online in five steps, and are billed monthly with annual consumption settlement. The company handles all switching formalities including cancellation of the prior contract and grid operator coordination.

Product overview

Grünwelt Wärmestrom GmbH is a German renewable energy supplier offering a portfolio of electricity and gas tariffs under the 'Grünwelt Energie' brand. The product range comprises three main categories: (1) Eco-electricity (Ökostrom) tariffs including Strom Easy 12, Strom Easy 24, Strom Classic, Strom Bonus 12, Strom Bonus 24, Grünwelt Flex (dynamic tariff for smart meters), Ladestrom (EV charging tariff), and Strom Business 12; (2) Heat storage electricity (Wärmestrom) tariffs for customers with night storage heaters and heat pumps, including Wärmestrom Easy 12, Wärmestrom Easy 24, Wärmestrom Bonus, and Wärmestrom Classic; and (3) Eco-gas (Ökogas) tariffs including Gas Easy 12, Gas Easy 24, Gas Bonus 12, Gas Bonus 24, Gas Classic, and Gas Business 12. All electricity products are certified by TÜV NORD and sourced from European hydropower, while all gas products are CO2-neutral. The company also operates online customer portals for each product category (strom, gas, wärmestrom) and a customer referral program.

Differentiator

Problem solved

Functional benefit

Brands

• Grünwelt-Stiftung gGmbH: Charitable foundation of the Grünwelt corporate group, coordinates and executes all nonprofit activities including environmental protection and development aid projects since December 2018

Products and services

• Strom Easy 12 Eco-electricity tariff with 12-month price guarantee and 100% TÜV NORD-certified renewable energy from European hydropower, for residential customers.
• Strom Easy 24 Eco-electricity tariff with 24-month price guarantee and 100% TÜV NORD-certified renewable energy from European hydropower, for residential customers.
• Strom Classic Eco-electricity tariff with 12-month price guarantee, transparent single-rate pricing, and 100% TÜV NORD-certified renewable energy.
• Strom Bonus 12 Eco-electricity tariff with 12-month price guarantee, instant bonus after 60 days, and percentage discount on the first annual bill.
• Strom Bonus 24 Eco-electricity tariff with 24-month price guarantee, 15% new customer bonus after first full supply year, and immediate bonus after 60 days.
• Grünwelt Flex Dynamic electricity tariff for customers with smart meters (intelligentes Messsystem/iMSys), with prices tied to quarter-hourly EPEX Spot SE exchange rates plus taxes, fees, and a handling fee. No contract term, pay-as-you-go billing.
• Ladestrom (EV Charging Tariff) Eco-electricity tariff for EV charging via wallbox, available as a combined tariff or separate wallbox tariff for customers with dedicated meters.
• Strom Business 12 Business electricity tariff with 12-month contract term and 100% TÜV NORD-certified renewable energy for small commercial customers.
• Wärmestrom Easy 12 Heat storage electricity tariff with 12-month price guarantee and 100% TÜV-certified renewable energy, for night storage heaters and heat pumps.
• Wärmestrom Easy 24 Heat storage electricity tariff with 24-month price guarantee and new customer bonus credited with the first annual statement, for heat pumps and night storage heaters.
• Wärmestrom Bonus Heat storage electricity tariff with bonus incentives for new customers and 100% TÜV-certified renewable energy.
• Wärmestrom Classic Heat storage electricity tariff with transparent conditions, 1-month cancellation notice, and 100% TÜV-certified renewable energy.
• Gas Easy 12 Natural gas tariff with 12-month price guarantee and 100% CO2-neutral eco-gas (offset through certified climate protection projects).
• Gas Easy 24 Natural gas tariff with 24-month price guarantee and new customer bonus credited with the first annual statement.
• Gas Bonus 12 Natural gas tariff with 12-month price guarantee and bonus incentives for new customers.
• Gas Bonus 24 Natural gas tariff with 24-month price guarantee and bonus incentives for new customers.
• Gas Classic Natural gas base tariff with transparent conditions, 12-month contract, 12-month price guarantee, and 100% CO2-neutral eco-gas.
• Gas Business 12 Business natural gas tariff with 12-month contract term and CO2-neutral eco-gas for small commercial customers.

Quantifiable outcome

• Customers receive 100% green electricity certified by TÜV NORD with no CO2 emissions from generation
• +2 more outcomes

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

17 partnerships are on record, tiered core and minor.

• Novalnet AGcoreOthersPayment service provider processing all payment transactions for Grünwelt. Novalnet AG is a BaFin-regulated payment institution (Bundesanstalt für Finanzdienstleistungsaufsicht) that handles payment processing, including SEPA direct debits. Customers see Novalnet AG on their bank statements.
• SCHUFA Holding AGminorOthersCredit agency used for credit checks on private customers before contract conclusion. Based in Wiesbaden, Germany. Credit checks performed as part of automated decision-making for contract acceptance.
• Creditreform Düsseldorf / Neuss RoumenminorOthersCredit agency used for credit checks on commercial (business) customers. Based in Düsseldorf, Germany.
• Tesch Inkasso Forderungsmanagement GmbHminorOthersDebt collection agency used for receivables management when customers fail to pay. Based in Gummersbach, Germany.
• Bujagali Hydropower Project (Uganda)minorOthersClimate protection project used for CO2 offset of gas customers. Hydropower project in Uganda certified under UNFCCC CDM. CO2 certificates purchased to offset customer gas emissions.
• Renewable Energy Wind Power Project in Rajasthan (India)minorOthersWind power project in Rajasthan, India used for CO2 offset of gas customers. Certified under UNFCCC CDM. CO2 certificates purchased to offset customer gas emissions.
• Wind Power Plants Eurus II and Renascença V (Brazil)minorOthersWind power plants in Brazil (Eurus II and Renascença V) used for CO2 offset of gas customers. Certified under UNFCCC CDM. CO2 certificates purchased to offset customer gas emissions.
• Grünwelt-Stiftung gGmbH (Grünwelt Foundation)coreOthersCompany's own charitable foundation established December 2018 that coordinates and executes all charitable activities of the Grünwelt group. Supports climate protection and development aid projects globally. Coordinates donations and project partnerships.
• CARE DeutschlandminorOthersInternational humanitarian organization supported by the Grünwelt Foundation for development aid projects.
• Ärzte Ohne Grenzen (Doctors Without Borders)minorOthersInternational medical humanitarian organization supported by the Grünwelt Foundation.
• Plan InternationalminorOthersIndependent child rights organization supported by the Grünwelt Foundation.
• SOS KinderdorfminorOthersChildren's charity organization supported by the Grünwelt Foundation.
• WelthungerhilfeminorOthersGerman aid organization fighting hunger globally, supported by the Grünwelt Foundation.
• UNICEF DeutschlandminorOthersUnited Nations Children's Fund German chapter supported by the Grünwelt Foundation.
• Trustpilot A/SminorOthersCustomer review platform used by Grünwelt to collect and display customer reviews. Automated review requests sent after service delivery. Company displays Trustpilot widget on website.
• TÜV NORDcoreOthersGerman technical inspection association that annually certifies Grünwelt's green electricity products. Certificates issued from 2017 to 2025. Certification verifies 100% renewable energy sources (hydroelectric) from European facilities.
• Umweltbundesamt (Federal Environment Agency)coreOthersGerman federal environment agency that maintains the Herkunftsnachweisregister (origin guarantee register) used to verify Grünwelt's green electricity sourcing through Guarantees of Origin.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Emerging players

• 1Komma5° GmbH: German climate-tech company bundling heat pump installations with green electricity supply. Partial overlap as an emerging integrated decarbonization player with both energy retail and heat pump customer overlap.
• Tibber (Germany): Norwegian dynamic-tariff electricity supplier expanding in Germany with smart-meter-based time-of-use pricing. Direct overlap with Grünwelt Flex on dynamic pricing and tech-savvy customer segment.

Direct peers

• Octopus Energy Germany: UK-origin challenger energy supplier operating in Germany with dynamic tariffs and smart-meter-driven offerings. Competes directly with Grünwelt Flex and shares the digital-first, technology-led retail model.
• Naturstrom AG: German green energy supplier offering certified eco-electricity and climate-neutral gas to residential and commercial customers. Highly comparable as a competing eco-retailer with nationwide presence and sustainability branding.
• Lichtblick SE: Largest independent green electricity and gas supplier in Germany, offering 100% renewable electricity and eco-gas to households with a similar digital-first switching experience. Closest direct comparable given portfolio breadth and eco positioning.
• EWS Schönau eG: German energy cooperative from Schönau supplying 100% renewable electricity and eco-gas nationwide. Similar values-driven, eco-certified retail model with grassroots brand strength.
• Green Planet Energy (formerly Greenpeace Energy): Cooperative green electricity supplier in Germany focused on genuine renewable expansion (not just offset-based products). Direct competitor in the eco-electricity retail market with strong ethical brand positioning.
• Polarstern Energie: German eco-electricity and gas supplier offering 100% renewable household tariffs with strong sustainability narrative. Comparable as a values-led, digital-first eco-retailer competing in the same switching market.

Broad incumbents

• Entega AG: Regional green utility from Hesse supplying eco-electricity, eco-gas, and heat-pump tariffs across Germany. Comparable eco-product portfolio with broader regional utility infrastructure backing.
• Yello Strom (E.ON): Incumbent utility's digital-first consumer energy brand offering green tariffs across Germany. Backed by E.ON scale, competes on price and digital UX with eco positioning.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Customer concentration

• LinkedInlinkedin.com/company/gruenwelt-waermestrom-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 Grünwelt Wärmestrom GmbH