9:25 min, Report from 16.02.2016
Project Info: http://sdg21.eu/db/aktiv-stadthaus-in-frankfurt
In Troisdorf, North Rhine-Westphalia, the largest tenant electricity project in Germany is currently running with subsidised funding from the so-called tenant electricity surcharge under the Renewable Energy Sources Act (EEG). The project, which was supported by EnergyAgency.NRW following an initial consultation, supplies 24 social housing apartments in three multi-storey buildings with a total of 75 residents with electricity. For this purpose, all roof surfaces were covered with photovoltaic modules with a total output of 86.9 kWp. The PV system is completed by six Powerwall 2 battery storage units from Tesla. "The tenants have committed 100 per cent to the project. In addition, the PV electricity, insofar as it is not consumed by the water-to-water heat pump or the tenants, is first stored in electricity storage units. This works so efficiently that we already reached an average self-sufficiency level of 83 percent in May. On isolated days and nights, even 98 percent," explains Frank Scholzen from Scholzen Immobilien, the company that owns the properties.
In rental electricity projects, electricity is generated in a rented property - by PV and/or combined heat and power (CHP) units. This direct electricity is often sold by the operator of the plant to the local energy supplier or - as in Troisdorf - by the landlord to the tenants. "The electricity offered to the tenants is cheaper than electricity from the grid. The advantage for the system operator is an additional income opportunity, as well as an ecologically sustainable electricity supply," explains Wilhelm Schröder from EnergyAgency.NRW, who accompanied the project in an advisory capacity.
However, the three buildings of Scholzen Immobilien are not only characterised by an innovative power supply, Troisdorf is also future-proof in the area of heat: The heating system consists of two water-water heat pumps with a combined thermal output of 76 kW. The well depth is only 14 metres - thanks to the high groundwater level not far from the Rhine. Scholzen: "The smart meters supplied by the Aachen-based company Discovergy enable continuous monitoring of the energy flows between the PV system, heat pump, energy storage and main meter."
In this complex and demanding project, many parties have to be coordinated. In Troisdorf, the following were involved:
In the meantime, the company Scholzen Immobilien is planning another tenant power project in Düsseldorf.
By the end of April 2018, a total of 19 tenant power projects subsidised under the EEG with an installed capacity of more than 350 kWp had been realised in NRW. The EnergyAgency.NRW has published a brochure entitled "Mieterstrom - kurz erklärt" (Tenant Electricity - Explained in Brief), which presents in detail the technical and legal aspects that need to be considered when implementing projects.
Keywords:
Renewable, Tenant electricity, News Blog NRW, PV, Electricity storage
1:43 min., 2012, Video by Ramboll Studio Dreiseitl
Project Info: http://sdg21.eu/db/arkadien-winnenden
Show building projects by Joachim Eble / EMP: http://sdg21.eu/planungsbueros/emp
Keywords:
Greening / climate adaptation, DE-News, Movies, Movies < 4 Min, Wood construction, Near-natural open space design, News Blog Baden-Württemberg, Participation, Settlements
On the occasion of the meeting of the EU Ministers for Urban Development and Territorial Cohesion on the "New Leipzig Charter", Daniela Wagner, Spokesperson for Urban Development of the Alliance 90/The Greens in the German Bundestag, explains:
We welcome the "New Leipzig Charter". Without the transformational power of cities and the ideas and energy of their inhabitants, we will not be able to meet the challenges of the climate crisis. Nevertheless, the Charter contains considerable gaps. The guiding principle of the resilient city is missing. The development of robust and resilient cities is important in order to better assess risks and to be able to recognise and prevent dangers in good time. Nor is the model of the healthy city mentioned - despite the heat waves caused by the climate crisis, a never-ending stream of air pollutants from fossil combustion engines and the current challenge of a global pandemic.
In addition, there is a huge gap between the claims of the "New Leipzig Charter" and the actions of the Federal Government, which after all helped to develop the Charter. It would be nice if the content of the Charter were reflected to some extent in the policies of the Federal Government. For example, it is hard to understand why the paper talks about reducing land consumption, but the Federal Government does the exact opposite and reintroduces the land-grabbing paragraph 13b in the Building Code, which is highly questionable in terms of environmental and housing policy, or pushes through the construction of age-old plans from the Federal Transport Infrastructure Plan.
If the federal government is serious about affordable and well-designed housing being fundamental to urban development policy, then it should finally provide more affordable housing, double federal funding for social housing construction and introduce the New Housing Community Benefit. The energy turnaround in existing buildings should finally be advanced. With the "Fair Heat" action plan, we have presented a package of measures that financially incentivises investments in energy modernisation of housing with energy savings and the switch to renewable heat and significantly lowers the hurdles for the investments.
The statement in the Charter that urban transport and mobility systems should be efficient, climate-neutral and multimodal is also correct. Unfortunately, there is a considerable lack of implementation of the transport turnaround. What the federal government has done so far in terms of strengthening bus and rail pales in comparison to the billions in subsidies for the automotive industry. At the same time, the federal government is putting the brakes on the expansion of electromobility and has parked the topic of charging stations on the hard shoulder.
Source: PM of BÜNDNIS 90/DIE GRÜNEN in the German Bundestag from 30.11.2020
Keywords:
Soil & land consumption, DE-News, Mix of uses, Resource efficiency, SDG 2030, City, Environmental policy, Housing policy
According to a new study by EU scientists, one percent of the EU's surface area is sufficient to cover the community's entire electricity needs with solar power.
Keywords:
100% EEs, CO2-neutral, DE-News, Renewable, Climate protection, Media, New books and studies, News Blog Europe (without DE), PV, PlusEnergy house/settlement, SDG 2030, Transition Town, Environmental policy, Life cycle assessment
