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Rethinking tenant electricity: scalable system solutions for apartment blocks
How hardware-based system solutions such as the WEESS PowerTower simplify tenant electricity in apartment blocks – without complex supplier models, and with high returns.

WEESS develops solutions for apartment blocks and multi-occupancy buildings in which PV, storage, distribution and physical metering work seamlessly together. This makes it easier to implement tenant electricity as building electricity, with less administrative effort, clearer implementation logic and without ongoing software and licence fees.
Tenant electricity · Building electricity •Multi-family house · PowerTower•Less administrative effort
WEESS does not start with individual components, but with the actual project. This results in a solution in which products such as PowerTower, storage systems and inverters each fulfil a specific role.

Storage, inverters, distribution and metering are not simply combined at random. Each product performs a specific function within the solution.
WEESS approaches energy solutions from a project-based perspective. The focus is on where energy is to be generated, distributed, metered and used within a building.

PV, storage, distribution and physical metering for multi-occupancy buildings. This is how tenant electricity is implemented as building electricity with clear system logic – transparent in operation, simpler to implement and without ongoing software and licence fees.
WEESS’s products form the building blocks of a clear system logic. Each product family fulfils a specific function – from apartment blocks to commercial premises.

The solution is designed to clearly integrate generation, distribution and consumption within the building. This makes the model easier to understand during operation and reduces additional complexity.
In this project, it is not just the technology that counts, but also the effort involved. WEESS relies on a hardware architecture that is clearly separated in regulatory terms, which appears significantly simpler to implement than traditional tenant electricity schemes.
Our solutions describe the appropriate configuration for each specific application. Our products perform clearly defined tasks within this framework – ranging from storage and inverters, through distribution and monitoring, to large-scale infrastructure. The result is not a disparate portfolio, but an integrated energy system.


Installation companies need solutions that do not have to be explained from scratch for every project. WEESS offers a clear system logic for storage, distribution and metering – straightforward in planning, implementation and handover.

For property owners, it is not just the technology that counts, but a model that works in the day-to-day running of a building. WEESS provides a clear framework for tenant electricity and building electricity projects in apartment blocks.

Wholesalers and distributors need solutions with clearly defined product roles. WEESS offers a structured product range that can be easily integrated into sales and project business.

For large-scale energy and infrastructure projects, comprehensible system logic, clear measurement points and well-planned transitions between buildings, storage facilities and the grid are essential.

Whether it’s an apartment block, a commercial site or an infrastructure project: we’ll show you which setup suits your specific needs.

Discover our showcase projects and see WEESS building electricity in action.

For installers, retailers and the housing sector: work with a system that clearly brings together products and solutions.
Here you will find answers to key questions about our portfolio, typical use cases and working with WEESS.
‘Tenant electricity’ is the term commonly used to describe electricity models in apartment blocks. WEESS uses building electricity as its recommended implementation approach, as generation, distribution and metering within the building are clearly structured.
PowerTower combines distribution and physical metering within the building. This lays the foundation for a tenant electricity and building electricity solution with a clearer operational structure.
WEESS is particularly relevant for property owners, the housing sector, installers and project partners who wish to implement clean and transparent energy solutions in buildings.
WEESS combines hardware, measurement and system logic in such a way that projects are not unnecessarily burdened by additional complexity. This ensures that planning, implementation and operation remain clearly structured.
The process always begins with the use case. On this basis, WEESS develops a solution in which products, energy flow and project logic fit together seamlessly.