REVOLUTION E · External Case Study
AWVision23 connects solar PV, battery storage, hydrogen and heat utilisation at August Weckermann KG's manufacturing site in Eisenbach. Frank Hummel visited the system on 19 March. It illustrates the close connection between energy architecture, site strategy and operations.
Photographs: Frank Hummel · Site visit on 19 March
System figures from the operator's current project page, checked on 13 October 2026. The page states annual PV generation of 2,835,000 kWh. HSG has not independently measured these figures. [1]
Developing a new manufacturing site creates the opportunity to plan generation, loads and storage together. Weckermann describes securing the site, stable energy costs and future-ready production as the objectives of AWVision23. The project idea dates to 2021; the company states completion in 2025.
From an entrepreneurial perspective, the aim is to supply energy when production needs it. Value comes from the interaction of the load profile, on-site generation, time shifting and heat recovery. Organising ongoing operation is therefore part of the investment decision.
[1]Each component serves a different purpose. Their interaction makes the system relevant to manufacturing businesses.
700 kWp of rooftop PV and 2,000 kWp of ground-mounted PV form the generation base. The operator's current page states annual generation of 2,835,000 kWh. The timing of this energy determines direct consumption and storage requirements. [1]
3,400 kWh of storage capacity and 1,700 kW of charge and discharge power enable solar energy to be shifted in time. The operator describes day-to-night shifting as a key function. The economic value of peak reduction depends on actual load profiles and tariffs. [1]
An electrolyser with 300 kW of stack power produces hydrogen from treated rainwater. The operator states total hydrogen storage of 1.4 tonnes across four units. An 80 kW electrical fuel cell converts it back to electricity as required; the resulting heat is integrated into the heating network. [1]
Heat recovery and heat pumps complement the electricity supply. The visit report describes the use of waste heat from machinery and other system components. For any other site, temperature levels and usage periods require separate assessment, especially for process heat. [3]
Economic assessment
Published investment figures show the project's scale and provide a basis for a transparent assessment of capital requirements. A complete return calculation also requires actual operating costs and cash flows.
Calculation: EUR 8.0m investment − EUR 2.5m funding = EUR 5.5m. This balance is not a verified equity contribution. Financing, grant payment timing, tax treatment and lifecycle costs are not included. The operator and H2-Wandel's visit report state the investment and funding figures. [1] [3]
The operator currently states that around 90% of its electricity demand is self-supplied. This is the company's statement about electricity supply. Economic assessment requires avoided purchase costs, remaining grid imports, storage losses and actual export revenues. [2]
Batteries and hydrogen serve different time horizons. Maintenance, efficiency, replacement investment and useful heat potential belong in the same lifecycle comparison. Grant funding is accounted for transparently as a separate component.
Security of supply and predictability have strategic value. A sound resilience business case evaluates critical production loads, transfer capability and avoided outage costs using verified operational data.
What convinces me at Weckermann is the consistency with which energy supply and production are developed together. Leadership that takes a long-term view of the site lays the foundation for this type of system. To me, this is an entrepreneurial task delivered through technology.
For REVOLUTION E, the working logic is clear: clarify the decision, calculate the business case and orchestrate implementation. The economically appropriate combination of solar PV, batteries, heat and mobility follows from actual site data. Hydrogen is a project-specific option where storage and utilisation requirements support it.
Frank Hummel · Entrepreneurial sparring partner for transformation and energy
Site visit: 19 March. Sources checked: 13 October 2026. Technical and financial figures are published operator statements, complemented by the visit report. This study provides an entrepreneurial perspective on an external project. Technical acceptance and validation of operating economics remain with the operator and its project partners.
Actual site data provides a sound basis for investment and delivery. The All-Electric Site Assessment connects electricity, heat, process heat and mobility with a transparent economic evaluation.