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Case Study - Rudy Logue, Revergy

Main focus of my job is on the feasibility of mini-cogeneration plants. Looking at various options for cogeneration and the related economical parameters, our aim is to identify the optimum solution for potential customers and to provide them with a clear figure on the return of investment.

To get familiar with the business area, I have looked into existing installations during the first two weeks of work. Extensive internet research provided knowledge on suppliers, manufacturers and most importantly potential customers and the sectors in which they operate in.

As the law regarding feed-in-tariffs for cogeneration plants has recently changed, we are shifting our attention on self-consumption of electricity and the extent of savings that could be achieved through it. In accordance with this, I am examining comprehensive spreadsheets which have evolved through the past and doing my best to contribute in their modification for the new conditions.

Our aim is that I will be able to carry out a feasibility study for a small scale micro-CHP project at the end of the internship.


OnTech Engineering is a subsidiary of Revergy. Its main business area is planning, consulting, support, financing and maintenance of mini-cogeneration plants.

Supplying useful heat together with electrical power, mini-CHP systems reach combined efficiencies in the order of 90%. Therefore, they are considered as a more sustainable alternative to conventional electricity generating systems.

The systems supplied by OnTech Engineering have powers ranging from 50kWel to 2145kWel. They contain biogas and natural gas engines from reputable German manufacturers such as MAN and Liebherr.

The company is new to the market but benefits from Revergy’s wide experience in engineering, control systems, energy consulting services and infrastructure technology.


The OnTech Engineering office is located inside Revergy’s facilities and I am working in a large, open-plan office together with other Revergy engineers. The office is at the 4th floor of the BLUENET Building which is on the Isaac Newton Street inside the Scientific and Technological Park of the Isla Cartuja.

I used to walk to work. This would normally take between twenty to thirty minutes from the flats.  On the second week of work I tried the Sevici bicycle scheme (short term subscription: 10€/week). I was very satisfied by the experience and thus applied for the long term subscription (25€/year) about 10 days ago. The card arrived today, and from now on I will be cycling to work! That takes only around 15 minutes.


Unlike breakfast, we go for lunch solely as a group of interns. It is usually baguettes from the nearby faculty canteen or a hot meal from the Cafeteria Italia right across BLUENET.


My boss, Fernando, is quite busy, but he always takes time to explain the work to me. He speaks English very well but also encourages me to practice Spanish at every chance. Every now and then he speaks a simple, clear and slow Spanish instead of English, so that I can understand. It is really nice to be working with him.

I have a second line manager, Herr Vagt, who is in Germany most of the time. We speak German with him, which is also a good experience for me as I have not spoken German in an engineering work environment before. Both of my managers are always very motivating.

Everyone at the office is friendly and helpful and a few of us play 5-a-side football on Wednesday evenings