Benefits of Home Energy Management Systems in residential buildings EES & IBESA Summit – France - Strasbourg Date: 24.10.2018 Author: Marc Helfter, Torsten Hager
EES & IBESA Summit - France Agenda • System description and main functions of Home Energy Management System (HEMS) • The role of intelligent buildings in smart grids • How does it work? • Main benefits 3
01 System description and main functions of HEMS 4
The world is changing Some facts 5
The world is changing (quickly) The future will be a full electric world in which nearly all applications in daily life and at home will be electrical Photovoltaic (PV ) Smart Grids E-Mobility Heating will be standard on single- Buildings will be connected Future cars will be electrical Heating will be electrical and double-family houses with the grid By the replacement of nuclear Directive 2010/31/EU All car manufacturers are From 2025 on heating – Nearly zero-energy buildings and fossil fuel driven power designing their new cars as systems based on plants with lots of volatile (NZEB) from 2020 on electric vehicles combustion will be Today PV is the cheapest renewable generators the forbidden connection of all players in grid way to fulfill this directive becomes mandatory 6
A global ecosystem, from the grid to the car HEMS is the heart of the energy management in a building Control 7 system 5 Power & Data Power Data 7
Home Energy Management System HEMS manages and optimises the energy flows in the building and the exchanges with EVs and grid Energy Storage System (ESS) PV converter Heat pump EV Charging Station (EVCS) HEMS 8
02 The role of intelligent buildings in smart grids 9
From a Grid perspective Problem to solve = Tetris 10
From a Grid perspective Make match consumption and production • The dominant model is to adapt the production to the consumption. This is done with fossil energy production means such as gas. • Another option is to add some flexibility on the consumer side. This can be done by connecting a lot of buildings having flexible loads, local production and storage in a virtual power plant. • One way to make the grid smart is to send tariff information to the HEMS of all the buildings in order to make them react. • Low price means overproduction => consume • High price means overconsumption => stop consuming or produce 11
03 How does it work? 12
Home Energy Management System HEMS is the brain in the building that is connected to all components Data / cloud / HMI service PV HEMS EVCS Storage Measure Other HVAC GRID / Tarif equipments / meter Home automation 13
Home Energy Management System HEMS is in charge of finding the optimum in energy consumption of the building • Collects local information such as consumption and production • Makes prediction based on weather forecast for PV production and consumption based on self learning • By using algorithms, controls the battery charge and discharge • Controls the electric car to avoid black out • Makes proposals/recommendations to big consumers such as electric vehicle or heat pump in order to save money or used locally (PV) produced energy • Get dynamic tariff information from the grid (utility) and take them into account in the optimization algorithms and give them to the main consumers • HEMS can control directly some devices and acts as an agent for others such as EV or heat pump… 14
02 Benefits 15
Home Energy Management System Main benefits • Benefits for utilities and grid operators • Additional flexibility that saves operation of fossil production means • They will help to enable the introduction of renewable energies and electric vehicle in the ecosystem • Benefits for the end-user • Increase of self consumption and autarky level (from 20 to 80%) • Money saving and visibility • Become an actor of energy transition • Benefits for citizens and planets • Increase the share of renewables and contribute to reduce CO 2 emissions 16
Thank you for your attention! Marc Helfter Disruptive Innovation Director Corporate Strategy – Innovation & Business Development Boulevard d’Europe M +33 6 19 67 63 89 67215 Obernai Cedex marc.helfter@hagergroup.com France hagergroup.com
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