What IS Software does

IS Software GmbH is a German, privately held vendor of the WinEV® integrated software suite, headquartered in Regensburg with additional offices in Heidelberg and Hannover. Founded approximately 25 years ago, it serves more than 300 German municipal utilities (Stadtwerke), regional energy suppliers, and energy cooperatives. The company employs roughly 135 staff and is led by three managing directors covering commercial and technical functions (Bernd Hasselfeldt, Mike Horne, Walter Seitz). Its operating perimeter sits within the regulated German energy and water utility software segment, with deep coverage of statutory market communication and reporting routines (EEG, KWKG, MaBiS, GPKE, GeLi Gas, WiM, GoBD).

The WinEV suite spans energy data management, billing (energy and water), network management (electricity, gas, water, district heating), smart metering gateway administration, mobile workforce, customer service/CRM, and business intelligence. Delivery is dual-mode: traditional on-premise licensing alongside cloud-hosted deployment running on NorthC Deutschland GmbH data center infrastructure, with 60-80+ customers already on the cloud variant. Module-level partnerships with Qlik (BI/analytics) and iQuadrat (RevA/GoBD-compliant archiving) extend the platform without those capabilities being built in-house. A tiered Business Process Outsourcing (BPO) service — packaged as Bronze, Silver and Gold — adds operational-process outsourcing for utilities that lack internal IT capacity.

The commercial model mixes upfront software licenses, recurring maintenance, cloud subscriptions, BPO fees, and professional services/implementation revenue. Go-to-market is direct via the three German offices, targeting municipal and cooperative utility procurement processes. The company's strategic posture emphasizes regulatory compliance depth, long-tenured customer relationships (some dating to 2003), and incremental expansion into adjacent segments — water utilities, cooperatives, and the Smart Areas/Smart Districts district-level energy management concept — rather than horizontal market expansion or M&A-driven growth.

Name

IS Software

Legal name

iS Software GmbH

Website

https://is-software.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

51–100 employees

Short description

IS Software GmbH is a German vendor of the WinEV® integrated software suite for energy data management, billing, network operations, smart metering, and market communication, serving 300+ municipal utilities and energy cooperatives across Germany via on-premise and cloud deployments.

Ownership category

akta.pro rank

Product category

Utility Billing Software

NAICS

Software Publishers (51321), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518), Custom Computer Programming Services (541511)

SIC

Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370), Services-Prepackaged Software (7372)

akta.pro primary industry

iBPMS (Intelligent BPM Suites) & Process Automation Suites (HDAEAHAG)

akta.pro secondary industries

Enterprise Application Reporting, BI & Analytics Enablement (BPAEAGAK), Cloud Compliance, Audit & Continuous Controls Monitoring (CCM/GRC) (HDABAHAI)

Keywords

• Utility billing software
• Energy market communication
• Meter data management
• Business process outsourcing utilities
• Smart meter gateway software

Headquarters

HQ city

Regensburg

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Software Licenses: Perpetual software licenses for the WinEV® module family with different license types including user licenses, meter point licenses, and enterprise licenses as described in AGB
2. Business Process Outsourcing (BPO): Comprehensive BPO services covering market roles (Lieferant, Netzbetreiber, Messstellenbetreiber) with three tiers: Bronze (process support), Silver (individual process takeover), Gold (full-service complete process field takeover)
3. Cloud Services: Application providing service with WinEV® functions delivered from certified data center, including maintenance, archiving, and data protection
4. Software Maintenance and Support: Software maintenance and care contracts including updates, error correction, hotline support, and remote maintenance as per AGB
5. Professional Services: Implementation consulting, project management, format conversions, release changes, and system operation support

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

iS Software GmbH develops, sells and operates the WinEV® integrated software suite for German energy and water utilities, covering consumption billing, network usage management, EEG/KWKG renewable energy compliance, metering (gMSB, iMS, WiM), market communication (GPM/EDIFACT), energy data management, financial accounting, business intelligence and revisionssichere archiving. The suite is complemented by tiered Business Process Outsourcing (BPO) services across utility market roles and certified Cloud Services hosted at NorthC in Nuremberg. The offering serves municipal utilities, citywerke, energy cooperatives and water/wastewater utilities in Germany with over 25 years of domain specialization.

Product overview

IS Software offers the WinEV® modular software family as a comprehensive integrated solution for the energy and water utility sector. The portfolio consists of approximately 20 modules spanning consumption billing (WinEV®TARIF, WinEV®SVK), network usage management (WinEV®NETZ), renewable energy regulation (WinEV®EEG, WinEV®KWK), metering and market communication (WinEV®gMSB, WinEV®iMS, WinEV®WiM, WinEV®GPM), customer engagement (WinEV®WEB, WinEV®DokV), analytics (WinEV®BI, WinEV®DS), financial management (WinEV®FS, WinEV®FA), energy data handling (WinEV®EDM, WinEV®MaBiS), operations (WinEV®ARES), and compliant archiving (WinEV®RevA). The modular architecture allows customers to configure WinEV® according to their specific requirements, from basic tariff billing to full-process outsourcing. The solution is available as on-premise installation or as a certified cloud service. Beyond software, the company provides BPO services and cloud hosting through its own data center.

Differentiator

Problem solved

Functional benefit

Brands

• WinEV®: Integrated software solution for energy and water utilities covering billing, network management, market communication, energy data management, and business intelligence.

Products and services

• WinEV® Integrated Software Suite Integrated software solution family for energy and water utilities covering metering, billing, market communication, energy data management, financial accounting and revisionssichere archiving. Delivered as on-premise installation or as a cloud service. The suite bundles approximately 20 modules (e.g., TARIF, SVK, NETZ, EEG, KWK, gMSB, iMS, WiM, GPM, BI, DokV, EDM, MaBiS, SIMU, FS, FA, DS, RevA, ARES, WEB) covering the complete utility back-office value chain for municipal utilities, citywerke, energy cooperatives and water/wastewater utilities in Germany.
• WinEV® Cloud Services Certified data center solution delivered from NorthC Deutschland GmbH in Nuremberg, providing WinEV® functions (consumption billing, market communication, archiving, etc.) as a managed cloud service with 24/7 operations, nearly 100% availability, two-stage backup, modern firewalls and redundant infrastructure. Over 80 customers are served through this cloud offering with minimal client-side requirements (basic DSL, PC, printer/scanner).
• Business Process Outsourcing (BPO) for Utilities Outsourcing services for utility market roles Lieferant (supplier), Netzbetreiber (network operator) and Messstellenbetreiber (meter operator), delivered in three tiers: Bronze (time-limited process support and overflow handling), Silver (individual market-role-independent process takeover with minimum contract term), and Gold (full-service complete process takeover based on BEMD SLV 2.0). Designed for municipal and cooperative utilities that need to offload regulated market processes.
• GENOrmt Cooperative Member Management Professional, database-based member management tool for energy cooperatives that enables complete administration of members, cooperative governance workflows and cooperative-specific billing. Sold to German energy cooperatives (Genossenschaften) as a complement to the WinEV® suite.

Quantifiable outcome

• Customer satisfaction rating of 1.9 (on a scale where 1 is best)
• +1 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature11 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• BDEW (Bundesverband der Energie- und Wasserwirtschaft)coreOthersIndustry association membership providing access to regulatory developments, standards, and industry network for energy and water utilities in Germany
• BEMD (Bundesverband für Energie- und Wasserwirtschaft Marketing und Vertrieb)coreOthersIndustry association partnership for marketing and sales standards, including Standardleistungsverzeichnis 2.0 (SLV 2.0) for BPO services
• ednaminorOthersIndustry platform partner for standardization in the energy sector
• NorthC Deutschland GmbHcoreTechnology or IntegrationData center operator hosting iS Software cloud infrastructure in Nuremberg with high availability, security, and redundancy features
• KFE (Kraftwerk Energy Services)coreStrategic or Co-development PartnerParent company group providing energy procurement, energy data management, and cooperative services
• MVV MannheimminorStrategic or Co-development PartnerPartner for smart city concepts, energy transition, and energy supply solutions
• Pfalzwerke NetzminorStrategic or Co-development PartnerPartner for energy transition, digitalization, and smart city initiatives
• iQuadrat AG (Phoenix Documents Cloud)coreTechnology or IntegrationSolution partner for Phoenix Documents Cloud providing audit-secure archiving based on GoBD-certified document and process management with scanning functions
• Qlik®coreTechnology or IntegrationTechnology platform for WinEV® BI business intelligence solution using Qlik® in-memory technology for real-time data processing and analytics

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Wilken GmbH: German ERP and billing software vendor serving energy utilities, municipal utilities, and housing industry with end-to-end suite. Competes directly with iS Software for SMB municipal utility customers in Germany with comparable billing, network, and energy data management modules.
• KISTERS AG: German software vendor specializing in energy data management, load forecasting, balancing group accounting (MaBiS), and water/hydrology solutions. Strong overlap with WinEV®EDM, WinEV®MaBiS, and energy data modules for utility and water customers.
• SIV AG: German utility software specialist providing kVASy® ERP suite for Stadtwerke, gas suppliers, and municipal utilities with billing, network management, and market communication. Direct competitor to WinEV® in the German SMB municipal utility segment.
• Robotron Datenbank-Software GmbH: German software vendor providing utility solutions (billing, network management, market communication) alongside smart energy and IoT offerings. Competes directly with iS Software in the German municipal utility segment with similar regulatory depth.
• Schleupen (Hermes Schleupen / Schleupen SE): One of the largest German utility software vendors, offering a comprehensive suite covering billing, network management, market communication, and smart metering for Stadtwerke and municipal utilities. Directly comparable to WinEV® in product scope and target customer, but at significantly larger scale and broader ERP footprint.
• PROSOZ Herten GmbH: German software specialist for municipal utilities, waste management, and public-sector organizations, offering ERP, billing, and citizen services. Competes with WinEV® for German municipal utility customers, particularly in North Rhine-Westphalia.
• Count+Care GmbH: SAP-based utility solution provider serving German municipal utilities, housing industry, and public-sector clients with billing, network management, and financial accounting. Direct competitor combining SAP expertise with utility vertical depth, relevant where customers move toward broader ERP.

Emerging players

• evucomp GmbH: Smaller German utility software specialist offering billing, network management, and market communication modules for municipal utilities and regional energy providers. Comparable in scale and product scope to iS Software, competing for the same SMB municipal utility customers.

Broad incumbents

• SAP SE (SAP for Utilities / SAP S/4HANA Utilities): Global ERP incumbent with a dedicated utilities industry solution covering billing, network management, customer service, and finance for energy and water utilities. Represents the long-term competitive threat for larger municipal utilities seeking a single-vendor ERP, against which iS Software's best defense is SMB segment depth and integrated regulatory know-how.
• BTC AG: German IT services company with deep energy industry practice, offering utility software (ENTERA), cloud platforms, and managed services to municipal utilities and grid operators. Overlaps with iS Software in BPO and cloud services, but operates as a broad IT services incumbent with a wider portfolio.

Market position

Strengths5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInde.linkedin.com/company/is-software-gmbh
• Instagraminstagram.com/is.software

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries2 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 IS Software