|17 June 2016|

Belgium

In the first in our new series of Q&As with leading European start-ups, we hear from Belgian renewable energy tech pioneers Turbulent 

Named start-up of the year 2015, this budding Belgian start-up owes its success not only to its technology but also to the concept itself: eminently simple and even delightfully retro. The idea put forward by Jasper Verreydt and his partner Geert Slachmuylders is to replace old watermills by the cutting-edge vortex turbines they have designed. In Europe alone, 350,000 potential sites have been identified.

Can you tell us a bit more about your innovation?

It’s simply the modern version of watermills: a turbine driven by a small watercourse and producing renewable electricity.

Is it really new?

On this scale, yes. Major electricity producers use run-of-the-river turbines, but for very high-powered applications: on rivers, with dams, and significant environmental impacts. Our turbine is very different. Firstly because it uses the vortex principle, which provides optimum mechanical efficiency even with a small water fall (3 metres is sufficient). Secondly because it does not require any engineering works (no dam) and it lets fish through. Thirdly because it yields small amounts of power (5kW -100kW) at a reasonable cost for purchase, installation and operation (easy maintenance). This completely opens up the hydropower market.

Even to private individuals?

Yes, of course. Starting with everyone who owns an old watermill: businesses, private individuals, municipalities and so on. Lots of sites would be easy to equip: around 350,000 sites in Europe alone, according to a recent study by Restore HydroPower. With a return on investment of around five years and the prospect of using 100% of the power you generate, we believe our turbine is clearly commercially viable.

So you’re going to sell your turbines to the end users?

For the time being, we are analysing the data from our first prototype, installed in January 2016. The energy generation is as we expected, but we still have to work on optimising, integrating and industrialising the subsystems. We hope to put it on the market in late 2016. First on a direct-to-customer basis, subcontracting the production and installation. Then probably through an Energy-as-a-Service model, in which we bear the cost of the initial outlay and operation in return for a subscription/consumption formula. In the longer term, we will probably have to licence the technology in order to enter international markets.

How are you financing your development?

We’re relatively reasonable about this point.The seed financing by KIC InnoEnergy (along with the various grants and subsidies obtained) in 2015 came to €250,000. We are going to undertake a first round in 2016 for the same amount. After that, we’ll probably need a second, more significant round, but we think it’s important to remain fairly frugal when it comes to capital. We are also receiving a lot of advice and guidance from KIC InnoEnergy in our endeavours to be efficient. They are helping us with a lot more than financing: patents, legal aspects, marketing and sales, technology. After all, energy, like money, is a valuable resource. There’s no point in wasting it.