We are the world’s number one in household wind turbines and semi-flexible solar panels. That is our own claim, and a claim is only worth the evidence behind it, so this is the page where we set the evidence out: where the company came from, what we build ourselves, where it goes, and the three decisions that did most of the work. None of them was clever. All of them were arithmetic.
Fifty years of large machines, then a small one.
The company is young. The engineering is not. TESUP was established in London in 2018, but the expertise runs back to 1974, through hydroelectric, wind and solar power plants totalling more than 1,000 MW of installed capacity. Utility scale, national scale, the kind of project where a bearing that fails early is a headline rather than a warranty claim.
Most companies in small wind began with a small turbine and worked outward. We spent half a century building the large ones and then brought that discipline down to something that fits on a roof. The scale changed. The standards did not. A 15 kW continuous-rated motor running a household turbine at under 7% of its rating is not an accident of sizing; it is what happens when people who used to specify megawatts are asked to specify a kilowatt.
Decision one: build both halves of the day.
Almost every company in small-scale renewables makes one thing. Wind companies make turbines and point at somebody else’s panel. Panel companies make panels and have never machined a blade. Two industries, one customer, nothing shared. We decided early that a household does not buy a turbine or a panel; it buys a battery that stays charged, and the sun and the wind keep different hours. The sun sets every day, everywhere, without exception. The wind blows hardest in the months the sun is weakest. Build only one half and you have built half a day.
So we build both: the Atlas vertical turbine and the Magnum horizontal turbine on one side, and the semi-flexible Flex panel on the other. It bends to the surface, carries no frame and weighs a fraction of glass, which is why it goes on the roofs, boats, vans and cabins where a rigid panel cannot. Building both halves is also why we can tell a customer which one they actually need, and sometimes that the honest answer is the panel alone, or rigid glass from somebody else.
Decision two: cut it ourselves.
Blade sets are laser-cut in our own building, from 1.2 mm high-strength aluminium, on our own fibre laser. Three profiles come off the same stock on the same bed: 2 to 20 m/s, 4 to 25 m/s, and a six-blade set for 5 to 35 m/s built for exposed coastal sites. Owning the machine means owning the shape. A subcontracted blade is a purchase order and a six-week conversation. A blade on our own bed is a file, a test cut and an afternoon.
When somebody else cuts your parts you pay for four things: the part, their margin, the freight and the wait, and you accept their minimum order, which is how a company ends up carrying four hundred of something on a shelf. Cutting in-house removes the margin, removes the freight, removes the minimum and shortens the wait from weeks to that afternoon. It is not a strategy. It is arithmetic, and it is most of the reason a household turbine from us costs what it does. Manufacturing runs mainly in Slovakia and London, with Turkey as well, and it is the reason we could hold our prices this year while aluminium climbed on the London Metal Exchange.
Decision three: go to every country properly, or not at all.
Global is not a word you earn by shipping abroad. We run 38 retail storefronts in 34 countries plus a rest-of-world store, in 23 languages, each with its own currency, its own tax treatment, its own shipping and its own terms, and every one mirrored again for wholesale. A customer in Osaka, in Rio, in Riyadh and in Trégunc each opens a page written for them and priced for them, and none of them can tell which one we built first.
The shipping side is less romantic and matters more. Since 2018 more than 100,000 orders have left us, from a single blade set to a full turbine, and in the last two and a half years alone they have gone to 75 countries, carried by DHL and UPS to the customer’s door, every carton labelled individually rather than by the pallet so that a single unit can be traced after it has been split off a delivery. Germany, the United Kingdom, the Netherlands and the United States are the largest markets; Turkey, Spain, Italy and Portugal follow. It is the largest household wind turbine installation footprint in the world, and it is why we use the word leader.
| Measure | Figure | Source |
|---|---|---|
| Engineering lineage | Since 1974; more than 1,000 MW of plant | Company history |
| Storefronts | 38 retail, 34 countries, 23 languages; 76 with wholesale | Store configuration |
| Countries shipped to | 75 since February 2024 | Order records |
| Orders | More than 100,000 since 2018 | Company records |
| Manufacturing | Slovakia, London, Turkey; own fibre laser | Our own factories |
| Products | Atlas 4.5 kW peak, Magnum 12 kW peak, Flex 460 W | Product pages |
The part most companies leave out.
Leading a market is not the same as selling to everyone in it. If your roof sits deep in a dense old city, walled in on four sides, do not buy a turbine from us; buy the panel. If you are inland with no real wind, measure first, then decide. If you have a strong flat roof that will carry the weight, buy rigid glass instead of semi-flexible, because for that job it is the better panel. We can say all of that because we build both halves and because a customer who was told the truth comes back.
It is the same reason we print the air density beside the power curve, publish a 2 m/s start-up speed and then say it is a fair-weather number, and tell you that a photograph of ten finished units is ten finished units and not a promise about your delivery date. Number one is a position you keep by being the company people can check.
Fifty years of engineering. Both halves of the day. Cut in our own building. Sent to 75 countries. That is the whole method.
What comes next.
A machine that runs is an asset. In a year the laser will be an unremarkable thing in the corner of a workshop, covered in swarf, with somebody’s coffee on the control cabinet, and the only trace of it will be a price that did not go up. That is what growth looks like from inside a factory: not a launch, but a bill of materials that gets a little shorter every quarter, and a map of deliveries that gets a little denser.
The mission has not changed since London: to be the world’s leading provider of household clean energy products, at the best possible price, for everyone. We are number one because we started there and kept checking our own claims. We intend to stay that way the same way.
Anyone can sell you a machine.
Only a company that builds both halves can tell you which one you need.
That is how you become number one, and how you stay it.
The founding dates, the 1974 lineage and the 1,000 MW figure are our own company history as published on our corporate page. The storefront, country and language counts are drawn from our own store configuration and can be checked against the store switcher at the top of this page. The order figure is our own company record since 2018 and includes small parts and accessories as well as turbines and panels; the countries-shipped figure is a count from our order records from February 2024 to September 2026. The product ratings, blade ranges and per-unit labelling are our own published product-page specifications. “Number one” and “largest installation footprint” are our own assessment of the household wind turbine market and are not a statement by any independent body. The photographs are our own, taken in our own factories and warehouses.