**Nine Klaassen, Arno Scheepens, Bas Flipsen and Joost Vogtlander \***

Department Design Engineering, Delft University of Technology, Landbergstraat 15, 2628 CE Delft, The Netherlands; nine.klaassen@gmail.com (N.K.); A.E.Scheepens@tudelft.nl (A.S.); S.F.J.Flipsen@tudelft.nl (B.F.)

**\*** Correspondence: j.g.vogtlander@tudelft.nl

Received: 13 May 2020; Accepted: 28 June 2020; Published: 30 June 2020

**Abstract:** In search of sustainable business models, product innovation must fulfil a double objective: the new product must have a higher (market) value, and at the same time a lower eco-burden. To achieve this objective, it is an imperative that the value, the total costs of ownership, and the eco-burden of a product are analysed at the beginning of the design process (idea generation and concept development). The design approach that supports such a design objective, is called Eco-efficient Value Creation (EVC). This approach is characterised by a two-dimensional representation: the eco-burden at the y-axis and the costs or the value at the x-axis. The value is either the Willingness to Pay or the market price. The eco-burden is expressed in eco-costs, a monetised single indicator in LCA (Life Cycle Assessment): an app for IOS and Android, and excel look-up tables at the internet, enable quick assessment of eco-costs. A practical example is given: the design of a new concept of domestic street lighting system for the city of Rotterdam. This new concept results in a considerable reduction of carbon footprint and eco-costs, and shows the benefits for the municipality and for the residents, resulting in a viable business case.

**Keywords:** street lighting system; TCO; EVR; EVC; eco-efficient value creation; eco-costs
