evohaus innovative settlements in general evohaus irq (Intelligent Residence Quartiere) Settlements cover your heat demand primarily environmentally friendly and cost-effective by the sun. The need for heating is already low due to the good insulation of the evohaus architecture anyway. Remaining heat demand is covered by solar power. The solar power drives heat pumps that produce about three kilowatt hours of heat energy for heating or hot water with one kilowatt hour of electrical energy. The settlement gets its heat independent of gas, coal or other fossil fuels. The heat pumps are preferably switched on when enough solar power is generated. Water tanks store excess heat and provide the settlement with sunless times. An energy management system monitors and controls storage tanks and heat pumps. The evohaus irq concept is taking the step from a passive house to an active house: it not only saves energy but also generates electricity itself and uses it with intelligence.

CO2-free parcel delivery for Cologne Electric street scooters for the DHL

Electric cars are an energy-efficient and potentially regenerative alternative to cars powered by fossil fuels. In order to promote this regenerative alternative, colognE-mobil has already installed 122 charging stations for electric cars (TankE) in and around Cologne, one of which is located on the Klimastraße in the car park behind the Kaufhof. Further charging points will soon be created directly on the Klimastraße.

In the framework of the project "Celsius" we investigate which method leads to the best possible results in order to increase the chances of realization. For this purpose, demonstration plants were built at three different locations in the city. In Cologne-Wahn and Cologne-Mülheim, the heat is extracted directly from the sewer using so-called gutter heat exchangers. The heat exchangers with a length of 60 and 120 meters are installed at the bottom of the canal. The heat transfer medium transports the heat from there to the heat pumps with a capacity of 150 or 200 kW in the boiler rooms of the schools supplied. In Cologne-Nippes, a total of three schools and a sports hall are supplied by sewage heat. Here, the wastewater is pumped through a newly laid, 400-meter-long bypass to the boiler room of the Edith Stein-.Realschule. There, in the largest direct evaporator in Germany (400 kW), heat is transferred directly to the heating circuit of the schools. With the three demonstration plants, an environmental relief of a total of 500 t CO2 / year is achieved. The use of wastewater heat is technically mature and well developed. Nevertheless, this form of waste heat utilization has so far been a niche existence. This is partly because it is still little known, often the necessary information is not available locally, their implementation is relatively complex and requires high investment. Further reducing these barriers is the goal of the Cologne CELSIUS project.  

Shore power from re­new­able en­er­gies Thanks to a land­side cruise liner power sup­ply sourced from re­newa­ble en­er­gi­es, we are sig­nif­i­cantly re­ducing the en­vi­ron­men­tal im­pact in Ham­burg. These ocean-go­ing gi­ants are sup­plied with elec­tric­ity via a trans­former ­sta­ti­on and mo­bi­le trans­fer mech­a­nism at the Al­to­na cruise ship ­ter­mi­nal. The di­men­sio­ns of the land­side power plant are unique in Eu­ro­pe. We are cur­rently con­sid­er­ing us­ing sim­i­lar mo­dels in other ar­eas of the port in fu­ture.

smart­PORT en­er­gy The HPA pro­motes en­vi­ron­men­tally-friend­ly mo­bi­li­ty and ad­vo­cates re­du­ced en­er­gy con­sump­tion. smart­PORT en­er­gy there­fore helps limit its de­pen­dence on con­ven­tio­nally gen­er­ated power, re­duce emis­sio­ns and save money. It fo­cuses on three core ar­eas: re­newable en­er­gi­es, en­er­gy ­ef­fici­ency an

Last week Stefka Wiese from GreenGasDrive was with us. The startup wants to make GreenCNG available nationwide for public and private fleet customers in the CNG filling station network. It should be made climate neutral, especially from waste biogas. In addition, GreenGasDrive advises on upcoming investment decisions and utilization optimization

Oliver Lang visited us from Sonnenrepublik . His start-up offers various solutions to use sunlight for power generation. For example in the form of sustainable, mobile solar panels for on the move, industrial sunshades with built-in solar cells as well as W-Lan function or even larger, customized solar panels

WeShareSolar (Dutch brand name: ZonnepanelenDelen) is a crowdfunding platform for collective solar-energy initiatives. WeShareSolar assists crowdfunding... read more »

The district heating company (Stadsverwarming Purmerend) in the city of Purmerend, the Netherlands, is a local, modern and renewable district heating company... read more »

Now the Saudi Arabian government has come up with a project that could give its economy a boost: a $US500 billion mega-city that will connect to Jordan and Egypt and be powered completely by renewable energy.