Sales for Temporary Power Supply: power reliability whenever and wherever it matters
In the world of temporary energy, there is no room for doubt. Whether it concerns emergency power for a factory, a hybrid set for a construction site, or the power supply for a festival: when the switch is flipped, it has to work. At TUN. Sales, we understand that dynamic. We ensure that your generators, battery containers, or hybrid systems do not stay in the yard, but get to work for the right customers in Industry, Rental, Events, and Leisure.
The market is changing, and fast
We act as your “Boots on the Ground.” We speak the language of the head of technical services, the buyer at the rental company, and the project manager on the construction site. We ensure that your solution gets on the radar and is included in the product range. No expensive reports, just calling, visiting, and demonstrating.
Why TUN. in energy?
Selling in this sector is not done from an ivory tower. You need to understand what peak load is and why a hybrid solution saves fuel. Our strength lies in the combination of technical affinity and commercial power. We focus on developing new business opportunities for specific technologies such as Battery Energy Storage Systems (BESS), Hydrogen (H2), and Hybrid systems. We connect your High-Tech or CleanTech solution to the Dutch and German markets.


Our focus areas
We focus specifically on four pillars within temporary energy, each with its own set of rules:- Industrial: Here, everything revolves around uptime. We position your solutions for shutdowns, maintenance stops, and as a response to grid congestion. The industry seeks reliability; we ensure they trust you.
- Rental: Large rental companies look for returns and a low Total Cost of Ownership. We help you become a preferred supplier. We demonstrate how your assets—whether generators or batteries—generate profit within their fleet.
- Events: A festival or sporting event cannot wait. The deadline is sacred. We ensure you are at the table with technical producers during the preparation phase, so that your power plan becomes the standard.
- Leisure & Domestic: From temporary housing to power supplies at holiday parks. We find the projects where temporary infrastructure is indispensable.
What our clients & partners say.
20+ leading companies



Together with Sander, we approached various international investors and other interested parties regarding PowerUP at the GITEX trade fair in Berlin. I really enjoy working with Sander; he’s to the point, straightforward (with a sense of humour) and always open to sound arguments. Together, we’re building new business for PowerUP.
As Team Captain, Sander was responsible for Nedap Energy Systems’ German team and played a key role in further professionalising the internal organisation. He also played a major role in the overall development and professionalisation of the Business Unit and in achieving success in the key target market of Germany.
I thoroughly enjoyed collaborating with Sander. He brings a wealth of senior sales and market expertise. He possesses extensive knowledge of cleantech, alternative energy solutions, and H2 fuel cells. Furthermore, he is a pleasure to work with! During our joint assignment, he provided PowerUP with suitable business partners in Germany and the Netherlands and was particularly valuable within the CCTV sector.
Time to gear up?
Do you have the energy solution that the Dutch market needs? Let us open the doors for you within the industry and with rental companies.Our services
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