What Windcloud does

Windcloud 4.0 GmbH operates a single climate-neutral data center located on the GreenTEC Campus in Enge-Sande, Nordfriesland, Germany, with the company incorporated in 2018 and operating under the legal entity registered at the Flensburg Handelsregister (HRB 12946 FL). The facility is powered by renewable electricity drawn directly from on-site wind, solar, and biogas installations via the Arealnetz local grid (commissioned 2024), and captures server waste heat to operate a Spirulina microalgae farm (operational since 2021), positioning operations as climate-neutral and pre-compliant with Germany's 2027 Energy Efficiency Act on waste heat recovery.

Windcloud sells a layered product portfolio spanning self-serve cloud services and enterprise colocation. Standard offerings include webhosting (€2.00 to €17.99 per month), Virtual Private Servers (€7.00 to €39.00 per month), a flexible Virtual Private Cloud (from €5.40 per month), Managed Nextcloud (€2.51 to €50.00 per seat per month), domain registration across numerous TLDs, and Veeam Cloud Connect-based cloud backup. Enterprise offerings consist of CO2location colocation (rackspace rental with quote-based pricing) and individualized infrastructure solutions sold via support-ticket inquiries. The underlying platform uses redundant node- and edge-disjoint fiber connectivity to Hamburg and Copenhagen, with peering at DE-CIX Hamburg/Frankfurt, IP transit via Global Connect and Hurricane Electric, and proximity to transatlantic cable landings on Sylt.

Windcloud's go-to-market is hybrid: a product-led, self-serve e-commerce flow (shop.windcloud.de) serves SMB customers, freelancers, developers, and small teams purchasing hosting and Nextcloud subscriptions, while enterprise and colocation deals move through inquiry-based direct sales handled via the support ticketing system. The company is privately held and founder-managed by managing director Stephan Sladek; no venture capital, private equity, or institutional backing is disclosed, and revenue figures have not been publicly disclosed. The customer base is distributed across small businesses, IT professionals, and teams needing hosted Nextcloud or cloud backup, with addressing of medium and large enterprises handled on a case-by-case basis via colocation and custom VPC configurations.

Name

Windcloud

Legal name

Windcloud 4.0 GmbH

Website

https://windcloud.de

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

Windcloud 4.0 GmbH operates a German climate-neutral data center on the GreenTEC Campus in Enge-Sande, powered by on-site wind, solar, and biogas via the Arealnetz, with waste heat feeding a Spirulina algae farm. It sells VPS, Virtual Private Cloud, webhosting, Managed Nextcloud, domain registration, Veeam-based cloud backup, and CO2location colocation to SMBs, developers, teams, and sustainability-focused enterprises.

Ownership category

akta.pro rank

Product category

Cloud Hosting Services

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Microgrid & Community Energy VPPs (Campus, Military, Remote, Resilience) (EUAFAHAE)

akta.pro secondary industry

Heat Recovery & Thermal Integration for Biomass Plants (Economizers, ORC, Heat Exchangers) (EUAAAGAL)

Keywords

• Green cloud hosting
• Renewable data center
• Virtual private server
• Managed colocation
• Web hosting services

Headquarters

HQ city

Enge-sande

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Webhosting Subscriptions: Monthly/annual subscription hosting services including webhosting (Start, Brise, Sturm, Orkan tiers), VPS (XS through XXL), Virtual Private Cloud, and Managed Nextcloud. Recurring revenue with monthly or annual billing cycles.
2. Domain Registration: Domain registration and transfer services supporting numerous TLDs including .de, .com, .eu, and many others. Annual registration fees.
3. CO2location (Housing/Colocation): Rackspace rental for customer hardware in the data center. Options include full racks with 24/7 access or individual height units in shared racks. Quote-based pricing for enterprise colocation.
4. Cloud Backup Services: Offsite backup services using Veeam Cloud Connect for customer on-premise infrastructure. Custom quote-based solutions for enterprise backup needs.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Windcloud 4.0 GmbH operates a climate-neutral data center in Enge-Sande, Germany, powered by directly sourced renewable electricity from nearby wind, solar, and biogas installations via its Arealnetz grid. The company sells web hosting, virtual private servers (VPS), virtual private cloud (VPC), managed Nextcloud collaboration, cloud backup, Cloudron hosting, domain registration, and colocation (CO2location) services. Server waste heat is captured to heat a Spirulina microalgae farm, completing a closed-loop sustainability model.

Differentiator

Problem solved

Functional benefit

Products and services

• Webhosting Shared web hosting service with tiered plans (Start, Brise, Sturm, Orkan) for hosting websites, WordPress/TYPO3/Joomla/shop systems, and email. Includes free .de domain with select packages.
• Virtual Private Server (VPS) Virtual private servers in tiered configurations (XS through XXL) with multiple Linux distributions, full root access, and customizable compute/storage resources for developers and IT teams.
• Virtual Private Cloud (VPC) Flexible cloud resource pool for running multiple VMs with configurable vCPUs, memory, storage (500GB–10TB), bandwidth (200Mbps–unlimited), and backup options. Supports Linux and Windows licensing.
• Managed Nextcloud Hosted Nextcloud file sync, sharing, and team collaboration service with per-seat pricing (START/BRISE/STURM/ORKAN tiers), admin rights, optional Talk addon for video conferencing, and daily backups.
• CO2location (Colocation / Housing) Rackspace rental for customer hardware in Windcloud's climate-neutral data center, with options for full racks (24/7 access) or individual height units in shared racks. Quote-based pricing for enterprise colocation.
• Cloud Backup Offsite backup service using Veeam Cloud Connect for customer on-premise IT infrastructure. Custom quote-based enterprise backup solutions.
• Cloudron Hosted Cloudron platform for one-click installation and management of self-hosted web applications, targeted at users wanting simplified application server management.
• Domain Registration Domain registration and transfer service supporting numerous TLDs including .de, .com, and .eu, billed annually and bundled free with select webhosting packages.

Quantifiable outcome

• Full climate neutrality through renewable energy sourcing and waste heat utilization for algae biomass production

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Feature3 records

Partnerships

One partnership is on record.

• GreenTEC Campus Enge-SandecoreStrategic or Co-development PartnerWindcloud's data center is located on the GreenTEC Campus in Enge-Sande, a technology and business park focused on renewable energy and sustainable technologies. The campus hosts the Arealnetz (local energy grid) that supplies Windcloud directly with power from nearby wind, solar, and biogas installations. This co-location enables synergies in renewable energy utilization and waste heat recovery infrastructure.

Scale indicators3 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• Green Mountain: Norwegian colocation operator running hydropower-cooled data centers with documented heat reuse. Closely comparable to Windcloud as a Nordic/Northern-European renewable-powered, heat-recovery data center operator; differs in serving primarily enterprise colocation rather than SMB hosting.
• EcoDataCenter: Swedish operator of climate-positive colocation and data center services powered by renewable energy with closed-loop heat reuse to district heating. Directly comparable to Windcloud on the green-data-center and heat-recovery value proposition, though serving a larger enterprise colocation segment.
• Infomaniak: Swiss cloud and hosting provider emphasizing 100% renewable energy, Swiss data sovereignty, and ecological operations including its own data centers. Highly comparable to Windcloud on the 'green cloud for European customers' positioning and SMB-to-enterprise hosting portfolio.
• Greenhost: Dutch sustainable hosting and cloud provider running on 100% Dutch wind power with carbon-neutral data centers. Directly comparable to Windcloud as a European green hosting/cloud alternative for SMBs and developers, though broader in managed services.
• Strato (IONOS Group): German mass-market webhosting, server and domain provider serving SMBs and freelancers — a core target segment for Windcloud. Comparable product set (webhosting tiers, VPS, domains) and direct pricing competition in the low-ARPU hosting layer.
• Hetzner Online: Hetzner is a leading German hosting/cloud provider offering dedicated servers, VPS, colocation and managed hosting. It is the closest direct competitor to Windcloud in the German SMB and developer hosting market, with overlapping product lines (webhosting, VPS, cloud) and a comparable focus on energy-efficient operations.
• DataVerge (formerly Verne Global): Iceland-based data center operator powered by geothermal and hydroelectric energy with liquid cooling and heat reuse. Comparable to Windcloud on renewable-powered infrastructure and heat-recovery narrative, focused on enterprise colocation.

Broad incumbents

• IONOS (1&1 IONOS): IONOS is the largest German hosting and cloud provider serving SMBs and enterprises with webhosting, VPS, dedicated servers, and cloud infrastructure. It competes with Windcloud across virtually every product tier but at vastly greater scale and brand reach.
• OVHcloud: European hyperscale cloud provider offering VPS, dedicated servers, hosting and Public Cloud with its own data centers and a sustainability roadmap. Competes with Windcloud in VPS/hosting and has overlapping messaging around energy efficiency and water cooling.

Emerging players

• CloudSigma: European IaaS provider offering flexible cloud servers and hosting with sustainability messaging. Overlaps with Windcloud's VPS/VPC offering and targets similar SMB and developer segments, though broader geographically.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/windcloud4.0
• LinkedInlinkedin.com/company/windcloud
• Instagraminstagram.com/windcloud4.0/?hl=de

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors1 record

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 Windcloud