The threat of human induced climate change is imminent. The reason is an everyincreasing demand for energy and products, producing more and more greenhousegas emissions. Everybody needs to take responsibility now. The estimations are thatwith 2% annual energy savings from residential households 12TWh and 3.3 billionmetric tonnes of CO2 can be saved per year. Greenely, a startup from KIC InnoEnergy,wants to engage residential households to change their energy behaviour athome. They combine a smartphone application with the smart meter infrastructureto reduce households energy demand. Changing behaviour is complicated and researchprior to this thesis revealed that information and economic incentives aloneare not sufficient.A simple and proven technique to change behaviour is Nudging. A gentle pushin the right direction while leaving the freedom of choice. A popular example is aprinted fly in the men’s urinal. It nudges them to aim at the fly. The cleaning costswere reduced by 80% at the Schiphol Airport Amsterdam.Without application usage change is impossible for Greenely. Their main contacttool to households is a smartphone application. The smartphone market is vast andcompetition between applications is strong. Therefore the system outline needs toprecede Nudging for ongoing engagement and long term change. To achieve thatGamification practices are implemented. It is the incorporation of game design intonon-gaming contexts to achieve engagement through motivation and fun.This master thesis is done in cooperation with Greenely and focuses on residentialdemand reduction schemas, Nudging and Gamification. The aim is to improvetheir actual application and create an outline for an improved version that promoteslong term behaviour change. The result incorporates the most suitable features fromthe relevant topics and enables long term change.

The researcher has investigated what factors influence a startup in an international public-private-partnership (PPP). The researcher has designed an exploratory study with a case study on Greenely, which is a Stockholm-based startup that has developed an application to monitor the household’s electricity consumption. The theoretical framework covers topics such as the diffusion of innovations (in particular eco-innovations in the form of smart meters in Europe), business models, the Business Model Canvas, and public-private-partnerships. The researcher conducted semistructured interviews with employees of the municipality of Cesena, Italy and with employees of Greenely, which is interested in expanding its offerings to Italy via partnerships. This study has shown that the factors that should influence a  tartup in an international PPP are, mainly, five: Funding, Language and cultural identity, Timeline, Common vision and Bureaucracy. The factors “Funding” and “Common vision”, in particular, influence the PPP the most.