Energy performance 2025
Our 135 kWp photovoltaic system generated 130,870 kWh of electricity in 2025. Of that, 81,509 kWh were consumed directly on site. The system covers 27.4 percent of our total electricity demand.
At the same time, our total electricity consumption fell from 340,335 to 297,632 kWh, a reduction of 12.6 percent. Per tool produced, consumption dropped from 79.93 to 76.14 kWh.
Key figures at a glance
| Indicator | 2024 | 2025 |
|---|---|---|
| PV generation | 124,814 kWh | 130,870 kWh |
| of which self-consumed | 88,452 kWh | 81,509 kWh |
| PV share of total demand | 26.0 % | 27.4 % |
| Total electricity consumption | 340,335 kWh | 297,632 kWh |
| Electricity per tool | 79.93 kWh | 76.14 kWh |
| Natural gas consumption | 0 kWh | 0 kWh |
What sits behind the numbers
In 2024 we switched heating and process heat entirely to electric heat pumps. Our natural gas consumption has been permanently at zero since then. Added to this are the complete conversion to LED lighting, heat recovery on the compressors, hydraulic balancing of the heating system and two new, more efficient laser cutting machines.
On 1 March 2025 we moved our electricity supply contract to a green electricity product. We are currently completing the full documentation for this; the resulting emission figures will only be reported as final once that review is closed.
What we are working on
Our self-consumption rate fell from 70.9 to 62.3 percent in 2025. The reason: we generate more electricity while consuming less overall, so more solar power is produced around midday than we can use directly. For 2026 we have set out to raise the PV share of total demand to at least 30 percent and to reduce overall consumption further.
All figures are taken from our 2025 carbon footprint report (FB-IMS-UM-001), prepared in line with the GHG Protocol Corporate Standard. The report has not been externally verified.
Quality and Environmental Management at ZIMARA GmbH
ZIMARA GmbH is committed to the highest standards in quality and environmental management. Our company is certified according to ISO 9001 (Quality Management) and DIN EN ISO 14001 (Environmental Management).
Our Quality Management (ISO 9001)
✅ Process-oriented & continuously improved – Efficiency enhancement and customer satisfaction are our main focus.
✅ Quality planning & assurance – Tailored to the project size and complexity.
✅ Commitment to continuous development – Constant optimization of our processes.
✅ Transparency & training – All employees have access to the central QM documentation and receive regular training.
Our Environmental Management (ISO 14001)
🌍 Sustainability as a guiding principle – Responsible resource usage and minimization of environmental impact.
🌿 Taking responsibility – Adherence to all environmental regulations and continuous improvement of our environmental performance.
With this integrated management system, we ensure that the highest quality standards and sustainable business practices go hand in hand.
Workplace health management at Zimara
Since 2024, Zimara GmbH has been running a structured workplace health management programme in cooperation with AOK Niedersachsen. For a company of 40 people, that means no dedicated health department — it means measures that fit into everyday production and that we actually evaluate.
What we have implemented
Flexible working hours. Introduced in the first half of 2025. In our internal survey, 85 percent of employees said they were satisfied with the new arrangement.
Stress management workshop. Held in 2025 with AOK Niedersachsen. 92 percent of participants rated it helpful.
Ergonomic workplace design. An ongoing programme run by our occupational safety specialist, covering machine workstations, assembly and office areas.
Health checks and online courses. Provided through AOK Niedersachsen and open to all employees.
Leadership training on healthy management. Because most of what affects wellbeing at work is decided by supervisors, not by programmes.
How we measure it
Our risk assessments under the German Occupational Health and Safety Act cover psychological strain alongside physical hazards. We track sick leave days, staff turnover and feedback from employee reviews, and we evaluate these figures in our annual management review. Occupational safety committee meetings are held quarterly. Our occupational safety organisation follows the BGHM "Sicherheit mit System" model; formal recognition is a mid-term goal.
Where we stand
Participation in the voluntary health offerings currently sits at around 45 percent. We would like that number to be higher, and increasing it is one of our priorities for the coming year. Naming it seems more useful than claiming a success we have not yet achieved.
In the EcoVadis sustainability rating, our Labour and Human Rights score is 81 out of 100.
Our Carbon Footprint – Transparent and Measurable
For us, sustainability doesn't end with promises: since 2024 we have prepared a complete annual carbon footprint in accordance with the internationally recognized Greenhouse Gas Protocol (Scope 1, Scope 2 and material Scope 3 categories).
The numbers show that we deliver: heat pumps instead of natural gas, our own 135 kWp photovoltaic system, green electricity since March 2025, and a 12.6 % reduction in electricity consumption in 2025. Our target is clearly defined: −25 % CO₂e by 2030 compared to the 2024 base year – and we are currently ahead of schedule.
Transparency is part of our commitment. That is why we publish our complete carbon footprint, including methodology: