Transmission Towers
The lightest towers on the market for high voltage transmission
H50: the lightest suspension tower in its class
Low weight: when used in an H-configuration up to 24 meters, the total weight including the transverse is under 1000 kg. This can be extended up to 30 meters with a weight of less than 1200 kg. The low weight will reduce helicopter dependencies, costs, and footprint, and potentially speed up construction.
The truss-based sections ensure high strength and stiffness roughly equal to 50 cm diameter wooden poles.
Comprised of 6 meter sections weighing 108 kg a piece. The low weight of the parts makes assembly and handling on-site a walk in the park, and is particularly advantageous in the summer when many areas are inaccessible by large machinery.
The tower sections can be used with most cross beam and top-line solutions in either steel or aluminium.
Integrated anti-slip climbing rungs with 30 cm separation for easy and safe climbing without need for any bespoke equipment.
Available in any color. Through anodizing, a permanent and maintenance free color is integrated into the oxide layer of the surface of the aluminium.
Environmentally friendly and ready for the circular economy. Our end-to-end Norwegian supply chain based on Norwegian, hydro-powered low carbon aluminium will drastically reduce the project carbon footprint. Aluminium is the world’s most recyclable material and the light weight makes it perfect for handling by an electrical machine park.
Our digital twin allows for simple project engineering with PLS-CADD modelling and FEM analysis support. We provide technical drawings, calculation reports, and custom design of necessary accessories using our core competencies within product design.
H200: 1000 kg of pure strength
H200 makes it possible to build an entire project with 1000 kg towers, including angles and anchor masts.
With a truly optimized design for maximum strength in the horizontal directions, the H200 offers more than 2500 kNm capacity in each horizontal direction, making it equivalent to steel structures several times its weight.
At 14 meter height, a complete H200 tower weighs 1000 kg. Ground fitting and other modifications are handled at the bottom with prefabricated foundation solutions.
Can be built up to 20 meters high. Total weight including the transverse is 1550kg.
The design is based on only two unique aluminium profiles, which keeps the cost low and the logistics streamlined.
As always, the material is renewable-produced, low-carbon aluminium. This can be documented, just get in touch with us and we can discuss how we can help contribute to a better documented, lower, and more transparent carbon footprint.
Marine grade material selection for extreme durability
The aluminium profiles are extruded with 6082-T6 grade aluminium—so called seawater resistant aluminium. Used with M12 hot-dip galvanized or A4 stainless steel bolts, the solution is designed to last for generations in onshore environments.
Notice the closed profile design and cold-work connections: this is the key to low cost, low weight, and high strength. The closed profiles provides the stability needed for eccentric, bolted connections: thereby we avoid welding, streamline production, and reduce cost.
Flexible and cost-effective foundation solutions
Very often, the foundation work will account for a majority of the project costs. Aluminium transmission towers opens up for a lot of flexibility in the foundation design, as the sections can be buried, fixed onto rock-bolts, or placed on top of concrete foundations—whichever option the ground conditions deem preferrable. Since the tower sections are easily spliced, the foundation work can be completed prior to the installation of the tower, which decouples these two activities. This will help speed up construction, reduce weather and seasonal dependencies, and very often drastically reduce costs.
Prefabricated buried foundations for soil conditions
Aluminium has the corrosive properties necessary for a buried foundation in most soil conditions.
Prefabricated foundations can be placed directly in the ground in advance without pipes or concrete.
300-1500mm of the foundation section protrudes from the ground for easy helicopter installation.
The material is robust and not sensitive to damage from boulders during handling and burial.
Easy installation using threaded rods for rock conditions
By using a metallic material, we open up for strong local connections with brackets that facilitate fixing with threaded rods.
This makes it easy to anchor in solid rock surfaces: the cheapest and easiest foundation solution available.
For high moment loads and/or poor rock quality, reinforcement plates with variable height and width are adjusted to meet requirements based on the specific conditions.
Reinforcements and configurations
Strong local connections and standardized parts make it easy to add extra legs and supports as needed. For example, cross braces are an effective way to utilize the extra strength higher up. Since the H50 tower has the same cross section throughout the mast, unlike cone-shaped masts, there is a lot of strength higher up the mast, and the cross bracing thus works much more effective than in typical steel, wood, or plastic solutions.
Digital twin
The key to the Hyndla H50’s light weight and high strength is the advanced calculation method that has guided the design.
With the robust, non-linear Impetus Solver, we can build geometries that break the boundaries set by traditional analysis methods, creating larger geometries and more eccentric connections that make better use of the material.
All parts, including traverses, foundation solutions, top-line fasteners, etc., and the interactions between these parts are correctly represented in the model. This allows us to accurately optimize the design for weight and strength while also allowing us to quickly include new solutions in the calculations.
Additionally we use these models for project engineering, to verify that tower configurations meet the requirements of specific load scenarios based on data from traditional power line design programs, such as PLS CADD or Netlin.
Aluminium towers are available in PLS-CADD
In collaboration with EFLA, we have built a library of our H-50 aluminum towers for PLS-CADD. This means that all users of PLS-CADD can plan their transmission line project with aluminium just like any other material and make their own calculations based on documented material data, Eurocode 9 and their own analyses.
In cases of high utilization or special parts, Hyndla can assist with more detailed FEM analyzes and design services.
Low environmental impact & EPD
Aluminum is the world's most recyclable metal and can be recycled 100% into new raw aluminum with relatively little energy. Hyndla towers can become cans, cars, furniture... or even new towers at the end of their life cycle!
Our towers is also the first tower on the market with a certified EPD (Environmental Product Declaration) published on EPD-Norway’s website. An EPD provides third-party verified figures for CO2 emissions, energy consumption and other waste products from the prouction of a product based on the European standard for environmental declarations.
Recyclable aluminum towers produce less than half the CO2 emissions compared to similar steel towers. They also do not emit any other harmful substances.
Norwegian hydro power
We use low carbon aluminum produced with hydro power at Norwegian aluminium plants, delivered with an environmental certificate. Hyndla guarantees 4.0 kg CO2e/kg aluminium with Hydro Reduxa, but can also deliver Hydro Circal with at least 75% recycled aluminium and a footprint down to 1.2 kg CO2e/kg aluminium.
Lightweight sections of 108kg are well suited for a green construction site with electric vehicles and machinery. They are not damaged by being laid on rocky or uneven ground.
We ensure a smooth delivery
With an end-to-end Norwegian supply chain, we maintain a low carbon footprint and high delivery assurance.
Delivery times are low and predictable with very good transparency through our localized set-up.
Ships stuck in the Suez channel will not affect our delivery!
Delivery time estimate for 50-100 H50-towers.
132 kV project with Elvia
Hyndla’s first commercial project came as part of a larger 132 kV project were Elvia, the largest Norwegian regional TSO, renewed the transmission line between Løvbergsmoen, Lutufallet og Trysil in the east of Norway. The project primarily used wooden poles excepted for two taller towers where Hyndla’s aluminium solution was tested.
On June 2nd the towers were installed using a AS 350 helicopter. Both towers are 18 meters tall above ground and around 700kg (900kg with cross beam and all attached equipment) and were lifted in place in a single lift as shown in the video