Smart Buildings in Smart Grids


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Future power supply needs smart grids and smart buildings. Learn more about where these two worlds meet today to help build a sustainable tomorrow.

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Smart Buildings in Smart Grids

  1. 1. Infographic © Siemens Sources - Dena Congress, Berlin, 2008. - Siemens Ltd. Depends on business operation: behaviour, maintenance, continuous improvement. - Eichentholtz, Kok, Quingley: "Doing Well by Doing Good? Green Office Buildings" (2009), University of Maastricht, University of Berkley - IEA WEO 2012 - - Advanced systems can save up to 40%of energy Modern boilers can save up to 40%of fuel Efficient light bulbs and management can save up to 82%of energy Heating Shift consumption to low tariff times: e.g. pre-heat or pre-cool building at 3AM when electricity prices are low, saving up to 20% Intelligent and flexible consumption Sell excess power back to the grid, autonomously optimizing systems. Average increase of: 6%rental rates Financial feasibility Financial benefits of smart buildings: Lighting Building automation and control systems Smart buildings can feed self-generated energy back into the grid. In a smart grid, supply and demand are con- nected. Buildings can be used to store energy. Bilateral exchange of data and energy between the building and the smart grid. Interface to smart grid Modern chillers need up to 50%less energy Chiller Solar and wind energy A Building Energy Management System (BEMS) is the heart of a smart building. Perfect balance between consumption and production. 16%selling price Buildings become a key element of the smart grid A smart building with its own energy generation and storage interacts with the smart grid and is able to manage its own energy demand and generation to minimize energy costs and CO ² emissions. Smart building as a Prosumer consumes and produces power (photovoltaic, combined heat and power, wind, geo-thermal) on site. The power systems in Europe have mainly been built to accommodate central power plants. This changes as more distributed energy resources are being introduced into the power system. Future smart grids need to balance generation and demand. 20%The EU aims to get 20% of its energy from renewable sources by 2020. Key for a future energy system Smart Buildings in Smart Grids Growing global energy demand Decentralized power generation & renewable energy Today: unidirectional power flow Energy demands are growing worldwide and buildings account for 41% of the world’s energy use today. Future power supply needs smart grids and smart buildings. Learn more about where these two worlds meet today to help build a sustainable tomorrow. 2010 2030 147,700 TWh 190,700 TWh Buildings and energy Energy efficiency in buildings is key to reducing the world’s energy use. 28% Mobility 31% Industry 1% = 41% Buildings 496.000.000 Reduction World’s energy use GridEnergy ProducedEnergy BEMSConsumption Supply While primary energy demand is expected to increase by about 1/3 by 2030, global electricity demand will grow by 2/3 - three times as fast as the world’s population. oil barrels. Placed next to each other they would encircle the world 10 times +1/3