End-to-end processes in Odoo
How Erdgas Südwest Service GmbH became the first company in the EnBW Group to run its accounting entirely in Odoo
Odoo Experience 2026
“Odoo is the digital backbone of our company and our competitive advantage over traditional heating and solar businesses. SAMSA IT as our implementation partner was a decisive success factor, with deep Odoo know-how and industry knowledge in HVAC & solar from day one.”
About the customer
Erdgas Südwest Service GmbH (ESW) is a young, fast-growing company for heating and solar technology
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Erdgas Südwest Service GmbH (ESW) is a young, fast-growing company for heating and solar technology and a subsidiary in the group of Energie Baden-Württemberg AG (EnBW). With its own teams of certified heating and energy technicians, ESW installs heat pumps and photovoltaic systems and modernises gas and heating systems in Baden-Württemberg and south-west Germany, for private and commercial customers. In doing so, ESW combines the stability of a large energy group with the agility of a lean start-up.
The challenge & strategy
From the very beginning, ESW has committed itself to complete digitalisation
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From the very beginning, ESW has committed itself to complete digitalisation: no paper and no breaks between different systems. That is why ESW relies consistently on Odoo as its only software platform. Every process, from the first customer enquiry to the finished invoice, runs in Odoo.
This also applies to accounting
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This also applies to accounting: instead of handing it over to the group SAP, as is usual in the group, ESW is the first company in the EnBW Group to run its accounting entirely in Odoo, supplemented by a DATEV export.
The solution from SAMSA IT
As implementation partner, SAMSA IT digitalised and individually optimised the entire process landscape of Erdgas Südwest Service GmbH on the basis of Odoo:
SAMSA IT looks after a total of five Odoo instances in the EnBW Group.
Highly automated lead & CRM management
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- Integration of the website, lead marketplaces and manufacturer portals via API interfaces.
- Over 20,000 leads processed in a transparent, traceable funnel.
- Seamless transition: won deals are converted directly into execution projects without any loss of data.
Real-time costing & project management
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- Product packs and dynamic margin management linked to real-time supplier data.
- Automatic creation of structured installation projects with predefined task templates and real-time cost control.
Tailor-made technician app (Field Service PWA)
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- Development of a lean, user-friendly Progressive Web App (PWA) based on Odoo web technologies.
- The technicians on site see exactly the information they need (time tracking, routes, documents), without any app store dependency or high training effort.
Invoicing & accounting entirely in Odoo
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- Automatic invoice creation directly from projects and time records.
- Full integration of German VAT compliance, DATEV export and automatic bank reconciliation.
- Complete accounting in Odoo instead of handing it over to the group SAP; the transfer to DATEV is done by export.
- AI-supported capture of incoming invoices and receipts as well as real-time dashboards on cash flow, profit and loss and outstanding receivables.
Results & business impact
45 users
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100% system acceptance across the entire company.
From 30 min to 2 min
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Massive reduction in invoice creation time compared with the previous SAP process.
< 24 hours
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From the customer enquiry to scheduling the appointment.
300+ projects
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Projects completed per year.
30% less manual effort
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Significant relief in administrative processes.
First group company with Odoo accounting
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ESW is the first company in the EnBW Group to run its accounting entirely in Odoo.
Talk: From Sun to Billing: End-to-End Solar and Heat Business Digitalization with Odoo (Odoo Experience 2026)
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