An important tool to achieve energy efficient buildings is the use of energy management systems (Building Energy Management Systems-BEMS). The BEMS is an integrated system of software, hardware and services that controls energy use through information and communication technology. The system consists of a Central Station Control unit, which is connected through a system of self-regulated controllers, Data Transfer adaptors and a high speed communications network, with a number of de-centralized Data Processing Units, and through those with all terminal controllers, sensors such as temperature, humidity, light, motion, etc.
It monitors, automates, and controls building systems such as heating, ventilation, air conditioning, thermostats, and lighting to increase building energy efficiency and improve comfort in a very wide application area: from a single house, to a large complex buildings, multi building sites, and large industrial plants. Nowadays, cloud technology has expanded BEMS from traditional energy visualization and energy analysis to include demand response and property management. Proper operation of a BEMS can promote and strengthen the organizational, energy management techniques as well as financial actions. BEMS systems achieve:
- Energy savings of 15-20% for heating, cooling, ventilation while energy savings for lighting can be as high as 50-60%.
- Reduce energy costs and therefore lower operating costs.
- Automatic load cut and peak load management incurred energy costs.
- Improve the quality of the indoor environment.
- Greater building functionality and economy.
Main network communications protocols used for buildings installations include the KNX, the (EHS), BatiBUS the European Installation Bus (EIB), and Bacnet. Several physical communication media can be utilized, like the Twisted pair wiring, Powerline networking, Radio (KNX-RF), Infrared, Ethernet and 3G/4G communications. A BEMS can monitor, control, and alarm operations regarding energy issues, indoor conditions, power needs on a real time basis data coming from many various sources. It is a valuable tool in the European transformation to Smart buildings, Smart Cities, Smart Grids and their implementation phase supports its broader adoption.
The market of BEMS is growing day by day so the need to gather and control, and interpret all the collected data. BEMS are part of the big data market since the data they gather were conventionally stand-alone, but now, through networking, enable better ways to manage energy, and measure buildings and portfolios of buildings. BEMS revenue is expected to reach $2.4 billion in 2015 and grow to $10.8 billion by 2024 at an annual growth rate of 18.2% [Next Generation Building Energy Management Systems – White paper, Navigant Research, 2015].
BEMS market is expected to accelerate because BEMS offerings are anticipated to remain diverse in terms of solution capabilities and integration complexity.
On the 6th of October BigDataEurope was presented at EMENDER 2015 workshop (Energy ManagemENt Data ElaboRation 1st International Workshop on Energy Management, Prediction and Big Data Elaboration 06.10.2015, Slovenia, Ljubljana) as part of the community building and pilot case investigation process. The workshop was organised in the framework of EUproject NRG4CAST (http://nrg4cast.org/NRG4Cast). NRG4CAST is developing real-time management, analytics and forecasting services for energy distribution networks in urban/rural communities.
The presentation “Big Data technology for system monitoring in Energy – Big Data Europe” focused on the potential and opportunities for implementing pilot cases in the field of system monitoring and BEMS.
by A. Androutsopoulos (CRES)