Mobile battery generators for the power supply of the future from 50 kVA and 25 kWh upwards.


Economic: Better value compared to Diesel generators or complex temporary grid installations. 

Ecologic: Fulfills all regulatory norms – now and in a CO2 free world. With no emissions, the emost Butler is ideal also for closed quarters. 

High Energy Quality: Allows the use of sensitive devices (noise-free sinusoidal waveform, always within the specified voltage and frequency tolerances).

Easy to use: Permission-free and simple positioning allows a speedy mobilisation of a construction site, trouble-free transport and intuitive operation.

Quiet: Leads to increased comfort, health & safety and enables nighttime construction.


The right product for a wide range of applications.

The emost Butler leads to cost reductions and contributes to environmental protection and an improved level of quality of life. It is ideal for construction companies, blue-light organizations, in the transport sector (especially at charging stations for e-cars), in the event industry (festivals, trade fairs, food trucks), in temporary construction and in the uninterrupted emergency power supply.


Customer satisfaction provides the energy for our growth.

“The availability of the emost batteries in our machine park greatly facilitates our construction site planning and enables quick and efficient mobilization after order intake. From an occupational health and safety perspective, they significantly contribute to environmental protection and an increased level of safety in the workplace.“

Armin Keller

Head of Workshops & Security Officer

“I wanted to thank you very much for the whole process of renting the Butler S and – to be honest – we were all very excited about it.”

Ferdinando Tricarico

EFSA, a company of TrackNet Holding

“The butler worked wonderfully! We were really at the limit with the electricity and very happy that we could connect part of the kitchen via the battery!”

Andreas Isoz

General Manager, Bahnhöfli GmbH

“The use of the battery on one of our construction sites took away a great deal of concern, as the available power connection did not support crane operation. After several weeks of reliable continuous operation, it can be determined that the battery can be set up flexibly, is extremely easy to use and enjoys a high level of acceptance among our workers.“

Renato Bamberger


“Our preparation for an environmentally sensitive event was professionally supported by emost. With five Butler S units, tent heaters, refrigerators as well as the stage with screen and sound equipment could be supplied without any problems.”

Andreas Kienzle

General Manager, EMT

Would you like to find out more about us, our products and services? The Swiss Baumeisterverband presented our innovative system in its specialist magazine edition July 2020.


You are interested in the emost Butler system but not yet sure whether the system fits your requirements? No problem. We jointly evaluate your application and offer you a free Butler trial on your construction site.