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Energy-efficient Smart Cities: A Research and Opportunity Study for NRI

Key results
Comprehensive PoC prerequisites for future product development
In-depth study of the opportunities for using CityGML for urban energy modelling
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Summary

Nomura Research Institute (NRI), a leading global provider of consulting services and system solutions, requested a research and opportunity study on achieving energy efficiency through the design of sustainable urban areas using CityGML. ELEKS assisted NRI in exploring the capabilities of CityGML for modeling smart, sustainable urban areas and conducting energy simulations. The completed report presents potential use cases for photovoltaic optimization, micro-wind turbine installation, and microgrids. NRI plans to use this report as a basis for future case prioritization and PoC development.
Location
APAC
Cooperation period
2020 - ongoing
Services used
Sustainability Consulting Technical feasibility study
Industry
Technology
The situation

NRI wants to assess the potential of using CityGML for modelling energy sustainable smart cities

NRI is committed to helping mitigate industrial environmental impacts through research and the promotion of technology projects aimed at reducing global CO₂ emissions. With one of its clients, NRI explored the possibility of carbon footprint reduction by developing smart residential areas with energy-efficient renovated buildings and new builds. The company asked ELEKS to explore the capabilities of CityGML – an open XML-based data format used to represent cities and urban areas – in the modelling of smart, sustainable urban areas and energy simulations.

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The solution

ELEKS and partners delivered a comprehensive multistage analysis of promising CityGML applications

ELEKS partnered with the Institute of Energy Efficiency and Sustainable Building at RWTH Aachen University to help NRI evaluate the potential of using CityGML for urban modelling. It also explored the potential for building-structure enhancements that could distribute and supply renewable energy.

The ELEKS and RWTH Aachen experts researched the use case for CityGML in the planning and designing of sustainable urban areas and prepared initial documents that can be used for future PoC planning. Our research and consultancy process contained three key phases:

Exploration of use cases for CityGML

The team conducted deep-dive research into CityGML’s uses and capabilities. We generated more than ten potential use cases and then narrowed the list down to three that met NRI’s criteria:

  • Photovoltaic optimisation in city quarters: a Simulation-as-a-Service solution aimed at optimising the power, location and coverage of solar PV systems within cities to fulfil energy demands.
  • Micro-wind turbine installation: a Simulation-as-a-Service solution with smart analysis and planning capabilities aimed at calculating the potential benefit of micro-wind turbine installation for building planning.
  • Micro-grid installation: a Simulation-as-a-Service solution paired with a CO₂ reduction-calculation tool that can estimate the potential reduction of CO₂ emissions as a result of installing solar/wind-powered micro-grids.

Test run with CityGML

We examined the chosen use cases and prepared a detailed test run report for one, photovoltaic optimisation. To mimic real-world conditions, the team applied various open-source tools to enhance the capabilities of City GML.

Suggestions on CityGML usage and PoC prerequisite documentation

Together with the IEESB experts, we delivered a detailed report of recommendations, based on the test run results, and suggested some unique use cases for CityGML – in combination with a varied open-source toolset. The team also outlined fulfilment methods for the use cases and evaluated them in terms of desirability, feasibility and viability, thus providing the NRI with solid PoC prerequisite documents

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The result

NRI received feasible suggestions for using CityGML in urban energy modelling

Our report on CityGML uses, particularly for photovoltaic optimisation, micro-wind turbine and microgrid installation, allowed NRI to evaluate its options for urban energy modelling confidently. With this comprehensive information, NRI now has a basis from which to prioritise cases and the kick-off development of sustainable urban areas.

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