
Power, light and controlled conditions on site
TSR-ELSITE designs, manufactures and supplies products and solutions for worksite power distribution, lighting, heating, drying and condition control. We serve rental companies, resellers, industry and other suppliers and users of demanding professional equipment.
Choose a product groupWhat we supply
Products and solutions
for professionals
Durable solutions proven in daily use on construction sites, in rental fleets, in the trade and in demanding industrial environments. Our range covers the phases of a worksite – from power distribution and lighting to heating, condition control and site supplies. Every product is built to work in hard professional use.

Worksite power supply
Distribution boards, cables, extension leads, adapters and electrical accessories

Lighting
Floodlights, LED strips, general lighting and light towers

Heating & conditions
Heating, cooling, drying, heat pumps and frost protection

Site supplies
Submersible pumps, fans, dehumidifiers and cable accessories

Power generation & backup
Generators and portable battery power units

Spine
Remote monitoring and smart control of power, water, heating and equipment
The smart worksite
Spine – smart remote monitoring and control for the worksite
See what is happening on site – and react before problems appear.
Spine is a remote monitoring system developed for construction sites and other temporary environments. It brings power, water, heating and equipment monitoring together into one real-time view. The system tracks consumption and conditions, raises alerts on deviations and allows the connected systems to be controlled remotely.
With Spine you can cut unnecessary site visits, prevent interruptions and avoid wasted energy, and get reliable data on how the site runs and what it costs. The same system shows what is happening right now and how the situation has developed.
- Power
- Heating & cooling
- Water
- Control







Heating and cooling
Arctic Warm – energy-efficient heating and cooling for demanding conditions
A modular heating and cooling solution that grows with the site.
Arctic Warm gives construction sites and other temporary objects an energy-efficient way to produce both heat and cooling. The system is built from modular Aurora Block units, sized to the actual need and expanded as the load grows. In summer the same units keep halls, buildings and temporary spaces at the right temperature and humidity; in winter they keep the work going. The compact unit takes little space on site, and the modules can also be used for thawing frozen ground.
The technology was developed and proven in arctic conditions. Equipment that works reliably in severe frost also works reliably further south, with capacity left for heat waves, cold spells and power cuts. Heat and cooling are produced primarily with energy-efficient heat pumps. A fuel-powered backup starts only when needed – for example during a power cut – and can run on renewable HVO diesel.
Combined with TSR-ELSITE water-circulating heaters and Spine remote monitoring, the whole system can be followed and controlled in real time.
The brands we represent
Carefully selected brands for professionals
In addition to our own product development and manufacturing, TSR-ELSITE represents international brands specialised in professional use. We choose partners whose products complement our own range and stand up to demanding worksite and industrial use.
Why TSR-ELSITE
Solutions designed for worksite and industrial use
TSR-ELSITE designs, manufactures and supplies solutions for power distribution, lighting, heating and site equipment to rental companies, resellers, industry and construction sites. A large share of our worksite distribution boards is manufactured in our own production in Finland, and the rest of the range is either made to our specifications or carefully selected for professional use.
01
Our own product development
We listen to our customers – genuinely. Many of our products and their features come directly from customer needs and hands-on experience on site.

02
Manufacturing in Finland
A large share of our worksite distribution boards and general lighting is made in our own production in Finland, and we keep developing them for demanding professional use. Made in Finland, built for hard conditions.
03
A carefully selected range
When we do not manufacture a product ourselves, we choose the products and the manufacturers on quality, durability and intended use.
04
Serviceability and spare parts
Professional equipment has to take daily use and be repairable. We consider serviceability and the availability of spare parts already when products are designed and the range is built.
Smarter site technology
Spine adds real-time monitoring, remote control and usable data to worksite power and the rest of the site equipment – data that helps run the site and manage energy use.
Who already trusts us
Working together with rental companies
TSR-ELSITE products are found in rental fleets in Finland, the Nordics and across Europe.
Long-term cooperation with rental companies helps us develop products that meet the needs of both the rental fleet and the professionals using the equipment.

Cramo
Cramo is a Finnish-founded equipment rental company operating in the Nordics, the Baltics and Central Europe, part of the Boels group since 2020. Cramo offers a wide range of TSR-ELSITE products for hire in Finland, Sweden and the Baltics. The range covers worksite power and heating solutions, a large amount of equipment with Spine remote monitoring, and luminaires for site lighting.

Renta
Renta is a Finnish equipment rental group founded in 2015, operating in the Nordics, Poland and the Baltics. It offers a comprehensive range of TSR-ELSITE products in Finland and Sweden: alongside worksite power and Spine equipment, also light towers for area lighting. Spine is integrated into the Renta Easy service, so the data it produces is part of Renta’s digital service for its customers.

Ramirent
Ramirent is one of the largest equipment rental companies in the Nordics and Eastern Europe, part of the Loxam group since 2019, with customer centres in nine countries. It is a long-standing partner of TSR-ELSITE: its rental fleet includes a wide range of our products, Spine solutions and site lighting equipment. Through Ramirent, our worksite power solutions are also used in demanding industrial projects such as the Turku shipyard.

Boels Rental
Boels is a Dutch family-owned company and one of the largest equipment rental groups in Europe, with more than 800 branches in close to 30 countries. Boels offers TSR-ELSITE products for hire across Central Europe, including Germany, the Netherlands and Belgium. The range covers our worksite products, solutions with Spine remote monitoring and site lighting.
Guides and expert articles
Information for professionals
Practical information on worksite power, lighting, heating, condition control and smarter site technology.
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Latest article
Site lighting for Nordic winter conditions: what changes below freezing?
Read the article →
Get in touch
Tell us what you need – we will help you find the right solution
Describe the site, the schedule or the challenge in your own words. Our specialists work out what your site needs and propose a package that fits – whether it is a single product or power for the whole site.
- You do not need to know product names or exact technical details
- We size power, lighting and heating as one package
- You get a proposal for a solution that fits your site
Contact us directly
Call our sales+358 9 4555 588Send an emailsales@tsr-elsite.fiFree and without obligationBook a 15-minute consultationAlready know what you need?Build a quotation basketYou can also ask us in the chat in the bottom right corner.






