Spreewerkstätten, Am Krögel 2, Berlin
From Apr 7th 2019
To Apr 8th 2019
Cool stuff worth at least 2500€
Conceive and Prototype new energy efficiency solutions to drive Energy Transition and fight climate change!
See the website


Students, professionals, and startups! Come and face four exciting energy efficiency challenges and create sustainable solutions to fight climate change!

1) The Energy Efficient Supermarket of Tomorrow (Danfoss)

2) Energy Efficient E-Mobility (ENGIE)

3) Which Thing Creates Energy Efficiency in Buildings? (GETEC)

4) Energy Efficiency as a Service (MVV Enamic)

The event is free for students and post-grads! Students outside of Berlin -- send your CV to hack@deneff.org to win a travel pack!


Do you have the answer? Check out the challenges and formulate your solutions.
The Energy Efficient Supermarket of Tomorrow
Energy is a big cost burden for supermarkets today due to conventional technologies still in use. The refrigeration system is only utilized 30% over the year and excess heat is released to the ambient. At the same time, there is a shift in consumer behavior asking for responsible supermarkets delivering fresh and green products and good shopping experience Can you design the intelligent energy efficient supermarket of tomorrow that goes hand in hand with consumer needs?
Energy Efficient E-Mobility
E-Mobility is a worldwide mega trend. Electric Vehicles (EVs) keep inner-city areas free from emissions and air pollution. They are regarded as clean, innovative and attractive - even “hip” by their drivers. However, EVs consume electrical power and are not generally energy efficient. EVs shift the generation of their electrical power demand mainly to conventional power plants. Further, they will cause serious local electrical grid problems, and the battery production demands lots of rare geological resources. What contributions can EV drivers make today and in future to increase energy efficiency besides changing their driving behaviours? What new solution offers do they need?
Which Thing Creates Energy Efficiency in Buildings?
In times of even stronger interaction between man and machine, digital processes are an important necessity for the real estate industry. We need a process model that combines all stakeholders (tenants, service providers, property owners) as well as their technical installations (Hard & Software) in order to achieve a win-win situation. Which thing makes interacting possible, efficient and simple? No App!
Energy and Efficiency as a Service
Energy efficiency is not the core business for industrial, medium-sized enterprises. When dealing with it, support of energy efficiency experts (e.g. MVV) is needed. Today, already an onsite visit for first analyses is necessary, which is time-consuming and ties up resources. Additionally, in order to use tax reductions, it is required to show energy efficiency potentials, but not to implement them. How can MVV identify energy efficiency actions in an easy and digital way? How can they trigger and accompany the implementation with their own solutions?

Prizes pool

Got your eye on the prize? See what's in-store for the hackathon winners below.
Overall Winner, Business, Tech, Design
Danfoss: Pitch your ideas to Executives & Tech Gifts
ENGIE: Trip to Cologne to pitch your idea in front of ENGIE management board
GETEC: Executive Pitch + smart home tech worth 1000€
MVV Enamic: Executive Pitch in Manheim + Ice Hockey Game
7 April 2019 - 8 April 2019
Am Krögel 2
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