Most homes send their wind power to an inverter. Others store it in a battery bank, off-grid or as backup. The two need different things from the generator, so we now wind it to suit the way you will use it.

For an inverter: the standard winding

By default the generator is wound with 0.55 mm copper wire. That suits a grid inverter for home (on-grid) power. On an on-grid setup, keep your inverter's MPPT turned off. You do not need a charge controller or batteries.

For batteries: the 0.90 mm winding

If you charge batteries instead of an inverter, tick the battery option on the product page. We then wind the generator with thicker 0.90 mm copper wire, made for 12, 24 or 48 V battery banks. Thicker wire carries more current at the low voltages a battery bank works at.

The brain: the charge controller

Between the turbine and the batteries sits the charge controller. It converts the turbine's AC output to DC, manages charging, and brakes the turbine at the maximum voltage you choose, anywhere from 0 to 400 V. It handles up to 15 kW, has fully automatic turbine protection and a manual emergency brake, and connects to MyTESUP for monitoring.

The Atlas has its charge controller built in, so it connects straight to your battery. The Magnum connects to your battery and inverter through the separate TESUP charge controller. Every TESUP charge controller is tested before it ships.

Which one do I need?

• Home power through a grid inverter: keep the standard winding. No charge controller or batteries needed.
• Off-grid or battery backup: tick the battery option for the 0.90 mm winding. Atlas connects straight to the battery; Magnum adds the charge controller.

Cut from one sheet

The laser cuts the Atlas covers out of a single sheet, nested side by side so as little as possible is wasted. You can already pick out the back covers by their window for the screen and the row of round openings next to it.

The face with the screen

Once it is bent and coated, the back cover becomes the face of the Atlas. On the dark grey version you can see the printing: the TESUP logo, the inputs for wind and solar, the outputs to an inverter or battery, the sensor socket and the MyTESUP connection.

The same panel also comes in 2027 White, our new finish for the Atlas.

Watch it on the line

Watch the video on Instagram

Packed and on its way

Finished parts go into TESUP cartons, each with its own serial-number label and QR code. The cartons are wrapped, loaded, and on their way to their new owners.

It is a 3-phase permanent magnet machine rated at 15 kW continuous and 22 kW peak. In our turbines it works as a generator, turning wind into electricity. With a driver, it runs as a motor.

Tested before it ships

Every TESUP generator is tested before it ships. On the bench, each one is wired to a TESUP charge controller through its three phase wires, and it carries a label with its own serial number and QR code.

Inside the Atlas and the Magnum

The Atlas, our vertical turbine, reaches about 4.5 kW at 500 RPM in a 35 m/s wind. The Magnum, our horizontal turbine, reaches about 12 kW at 1,200 RPM in a 22 m/s wind. Both stay inside the motor's 15 kW continuous rating, so it rarely has to work hard.

How it is built

• Stator: 12 poles, 36 slots, 3-phase distributed winding, laid out for low cogging and a smooth sine-wave output.
• Magnets: 24 N42 neodymium magnets, mounted skewed to cut cogging torque by about 80%.
• Copper: 4 kg in total, Class 200 °C enamelled wire, wound in two parallel strands to share the current and the heat.
• Core: 240 laminated silicon-steel sheets, 0.5 mm each, to keep eddy-current losses low.
• In numbers: about 95% efficient at rated load, up to 2,000 RPM, turns in both directions, 20 kg.

It cuts in at about 50 RPM and gives around 1 kW at 200 RPM, a typical Atlas speed in light wind.

Sold on its own

Outside our turbines, the same motor suits electric vehicles and conversion kits, industrial machinery, marine propulsion, robotics, off-grid hybrid systems and micro-hydro.

One thing to know: as a motor it needs a compatible driver or controller for speed and current control. Running it without one can cause overheating and damage.

Before it went, we took a few photos: the pallet, the boxes on it, and what is inside them.

Wrapped and ready

Every carton carries the TESUP name and a label with a QR code. The big cartons sit at the bottom, the smaller ones on top, and the whole stack is wrapped tight so it travels as one piece.

Out in the sun

A pallet travels as ordinary freight. At the other end, it breaks back down into the boxes you see here.

Box and crate

Each box carries a label with its own serial number and a QR code. The Atlas body travels in a plywood crate with metal edges.

What is inside

Open the crate and the Atlas body sits in red bubble wrap, with its anchor bolts, the shaft and the cables with their connectors packed on top. This crate also had our 2026 TESUP calendar in it.

Next stop: Australia

When the pallet lands, the boxes go on to their new owners, and the turbines go up in the Australian wind. If you are in Australia and thinking about an Atlas, we would be glad to help.

2027 White is the new finish for the TESUP Atlas. It covers the sheet-metal panels of the Atlas body and the back cover: the face where the cables come in and go out, and where the digital screen sits.

Fresh from the booth

Every panel hangs from its own hook, so the powder can reach each edge, bend and hole.

The face with the screen

The rectangular window holds the digital screen, and the round openings around it are for the cables in and out. Against the white, the dark screen stands out clearly.

Watch it in motion

Two short clips from the line, showing the new white parts up close.

Why powder coating

Powder coating goes on as a dry powder and is then baked in an oven, where it melts into one hard, even layer. There are no drips, and the coat stays even over edges and bends.

We do this in-house. Read more about our new powder-coating line.

And if you wonder how a powder-coated finish holds up outdoors, see our Atlas that has been outside for five years with the paint still looking new.

Why "2027 White"

We simply call the new colour 2027 White: a clean, soft white that sits quietly on a roof, in a garden or against a white wall.

Two TESUP Magnum wind turbines are going on the hotel roof. Each will have its own TESUP charge controller, and both will feed one 10 kW inverter with two MPPT inputs. Here is the plan, and why it suits a hotel by the sea.

A boutique hotel on the water

Med-Inn is a small hotel with a pool garden, palm trees and its own pier into the bay. A hotel uses power all day and all night: lights, kitchens, pool pumps and, in summer, air conditioning. On the coast the wind often keeps going after sunset, when solar panels have stopped for the day.

Two Magnums on the roof

The turbines will stand on the roof, the highest point of the building. Up there the wind is cleaner and steadier than in the garden below, where palms and walls break it up. Our visualisation shows them on the round stair tower, on the right of the building.

The Magnum is our horizontal-axis turbine, with a white aluminium body and a 2.35 m rotor. It turns to face the wind on its own, so it does not matter which way the breeze comes in from the bay.

How the system fits together

• 2 × TESUP Magnum: horizontal-axis wind turbines on the roof.
• 2 × TESUP charge controller with IoT: one for each turbine. It turns the turbine's AC output into DC and reports to MyTESUP.
• 1 × 10 kW inverter with 2 MPPT inputs: one input per turbine, with AC out to the hotel.

Each Magnum has its own input on the inverter. MPPT stands for maximum power point tracking: the inverter finds the best operating point for each turbine on its own. If one rotor sees a stronger gust than the other, neither holds the other back.

Each charge controller with IoT also connects to MyTESUP. It measures voltage and current every second, so the hotel can follow both turbines live on a phone.

What comes next

We will share photos from the installation day. Once the turbines are running, their real numbers will show up in MyTESUP, and you can see how TESUP turbines perform around the world on our live performance page.

On our new performance page, the numbers come straight from connected TESUP turbines in customers' gardens and on their roofs. Each one is measured by its own MyTESUP controller and published every 10 minutes.

A TESUP Atlas, today

On 28 September, the strongest Atlas reporting to MyTESUP was in Ravenna, Italy. It had made 16.9 kWh that day and 260.0 kWh over the last 30 days. Its best day was 17.7 kWh, and its highest readings were 394 V and 8.3 A. On the page, the turbine picture turns as fast as the live power.

A customer's Atlas in Ravenna, Italy, as shown on the performance page on 28 September 2026. The date stays on the card, so the numbers stay honest as they age.

From the Arctic to New Zealand

Every connected TESUP system is a measuring station on a real roof. Together they record how small wind and solar really perform, in every climate on Earth. Each one sends five signals:

• Wind: rotor speed and output, at the height and place people really install turbines. Every second.
• Solar: panel output on Flex systems, against the real sky above them. Every second.
• Power: voltage and current from the controller, volts × amps, summed into the day. Every second.
• Temperature: local temperature, wind and cloud at each site, so output is read against its weather. Every hour.
• Visuals: a picture of the turbine and its surroundings, with the optional MyTESUP camera. On demand.

Measured, not modelled

Here is how a reading becomes a number on the page:

1. In the turbine: the MyTESUP controller reads voltage and current once a second. Power is volts × amps at that instant.
2. In the cloud: readings are averaged per minute and summed into daily energy. A minute with no reading counts as zero.
3. Chosen by the data: for each product, the connected turbine with the most energy in the last 24 hours is shown, re-checked every 10 minutes. Nobody picks it.
4. On the page: today, the last 30 days, the best day, peak voltage and current, and a 24-hour curve. Poor days stay on the chart. Owners are never named, and locations are shown at town level only.

Peak voltage and current are the highest one-second readings of the last 30 days, not datasheet ratings. When a turbine is resting, the time of its last reading is shown, never hidden.

10,000+ rooftops. One map.

With more than 10,000 installations worldwide, each controller reading once a second, the TESUP network is becoming one of the largest real-world datasets on small renewable generation. The public page refreshes every 10 minutes.

Border stations, training grounds, field camps and observation posts all share the same problem. They are far from the grid, and generators are loud, thirsty and need fuel brought in. Atlas is a vertical wind turbine built for exactly those places. It starts turning in a light breeze, keeps working in a storm, and runs at 35–40 dB, quieter than a conversation.

This post shows where Atlas is heading: three field colours, a camera on the face, and what the view looks like on your phone at 2 a.m.

Three colours for the field

Silver looks right on a roof. In the field, you want the turbine to belong to the ground it stands on. We rendered Atlas in three field colours, each matched to the terrain it is meant for.

The body, the 6-MC4 face sheet, the All in One flanges and every blade come straight from our production CAD files, down to the blade tabs hammered flat on the top flange. If your project needs Atlas in a specific colour, get in touch through the Atlas page.

A wind turbine that can see

Our R&D team is building a camera into the Atlas face, next to the TESUP logo. It runs on the power the turbine makes and is designed to stream to MyTESUP.

The idea is simple: every Atlas becomes a watch post. Where the turbine stands, you can see, without a separate camera mast or cable run.

The camera module is in development. Specifications may change before release.

Night, on your phone

MyTESUP already shows what your turbine is producing and lets you set its voltage limit from 0 to 400 V. With the camera, the same app becomes a live view of the site. Here is what each night mode looks like.

Infrared (IR, black & white)

Night vision (low light, green)

Thermal (white-hot, concept)

Pick the blade set for your site

The same Atlas body takes three blade sets, all fitted to the same All in One flanges. Choose by the wind you actually get, not the wind you hope for.

See your turbine’s day

Numbers tell you what your turbine did. The turbine camera lets you see it.

Through the day, the camera takes regular pictures of your turbine and the sky. On the Camera page in MyTESUP, you can play a whole day back as a short time-lapse.

Each picture comes with the wind speed and power at the moment it was taken. You can watch the weather change and see how your turbine responded.

How it works

A small weatherproof camera fits into the turbine’s electronics: into the body of the Atlas, where it looks out through the front panel, into the Magnum’s charge controller, and into the Wizard. It joins the wind and sun sensors on the same sensor cable through a short Y-cable, so the board and the existing sensors stay as they are. There is nothing else to install.

Your TESUP controller takes a picture every 5, 10, 15, 30 or 60 minutes. You can choose daylight only, and it adds extra pictures when the wind is strong.

In the MyTESUP app, a camera icon at the top of the home screen opens a separate Camera page. There you can:

• play back a day as a short time-lapse, with the wind speed and power for each picture
• go back day by day
• tap “Take a photo now”; the picture arrives within about two minutes

You’re in control

The turbine camera is off until you turn it on and agree in the app. You can turn it off at any time.

You decide how often it takes a picture and whether it works in daylight only. You also choose how long your turbine camera images are kept: 7, 14, 30 or 90 days.

If you want a clean slate sooner, you can delete them all with one tap.

Your privacy

Only you and the people you share your turbine with can see the turbine camera images.

TESUP support can’t see them either, unless you allow it in the app. That access lasts 7 days. You can stop it at any time, and you can see each time support looked.

These are images from the camera on your turbine. MyTESUP never looks at the photos on your phone.

One request from us: please point the camera at the sky and your turbine, not at people or their homes.

Coming soon

The turbine camera is in testing now, starting with the Atlas. It will be an option on the Atlas, on the Magnum’s charge controller and on the TESUP Wizard. We don’t have a date or a price yet.

Whether you already own a TESUP Atlas or Magnum or are thinking about buying one, we’d love to hear from you. Contact TESUP to register your interest.

The trouble with an Alaskan winter.

In Wasilla, the sun does a lot of work in summer and very little in winter. Using a full year of hourly weather data for 2025, the average solar energy reaching the ground was about 5.1 kWh per square metre per day in June, and about 0.18 in December. That is roughly 28 times less, in exactly the months when a household needs the most light and the most heat.

The wind does the opposite.

The same data tells the other half of the story. Wind near Wasilla averaged 3.0 m/s in December and 2.3 m/s in January, roughly double most summer months. Across the whole year the average is a modest 1.6 m/s, so we are not going to pretend Wasilla is a windy place. What it is, is a place where the wind turns up when the sun leaves, which makes a small turbine a winter partner for solar panels rather than a rival.

These figures come from a weather model grid at 10 metres above the ground, not from a measurement on anyone’s property. A clear, open site with the turbine on a pole can see a different picture, in either direction.

Meet the Matanuska wind.

The direction is where the valley shows its character. When the wind near Wasilla blew at 3 m/s or more, it came from the north-east 48% of the time and from the east another 25%, down the Matanuska and Knik valleys from the mountains. Locals know it as the Matanuska wind, and in winter it can be strong: the same data shows gusts of up to 25.7 m/s at Wasilla and 30.9 m/s at nearby Palmer, with 55 hours of gusts of 20 m/s or more at Wasilla over the year.

Which blades, and when to stop.

A vertical-axis turbine takes wind from any direction, so a valley wind that swings between north-east and east is no problem for the Atlas. For the light, everyday winter wind we would fit the Low-Wind blade set, which starts turning at 2 m/s and is rated up to 20 m/s. On the days when the Matanuska wind gusts beyond that, the right move is to stop the turbine and fit the Atlas protection cover, which locks the blades in place until it passes. For very exposed sites, the High-Wind set is rated to 35 m/s.

We wrote about stopping a turbine before a storm in A typhoon is coming. Here is what to do with your turbine. The Matanuska wind is not a typhoon, but the rule is the same: when the forecast is beyond what the blades are rated for, the right output is zero.

Solar for the long summer days. Wind for the long winter nights.

About 29 cents a kilowatt-hour.

According to the US Energy Information Administration, Alaska households paid an average of 28.8 cents per kWh in July 2026, against a US average of 18.3 cents. Every kilowatt-hour a turbine makes on a dark, breezy winter evening is one that does not have to be bought.

So: hello, Wasilla, and welcome to TESUP. If you live in the Mat-Su Valley and want to know what your own site could do, the Atlas vertical wind turbine page lists all three blade sets with their wind ranges.

Wind, gusts and solar radiation: ERA5 hourly reanalysis for 2025 via Open-Meteo, grid points near Wasilla (61.58°N, 149.44°W) and Palmer (61.60°N, 149.11°W). Electricity prices: US Energy Information Administration, average residential retail price, July 2026. Hero photo: Pioneer Peak on a winter evening near Palmer, Cecil Sanders, CC BY 2.0. We have not named our customer or their address.