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100% autonomy – heat, electricity and mobility

Mobile base station – up to 100% savings in diesel

About the company

E3/DC is one of the top three energy storage system suppliers in Germany (EuPD 2013) and has brought 850 systems in private households since 2012. The products offered are inverters, energy management and remote control software. Integrated in various types of integrated storage systems, the units are used for solar, Cogeneration, grid services and offgrid applications. The systems are engineered and produced in Germany. Contact: info@e3dc.com

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State-of-the-art battery performance and innovative power electronics designs have created commercially viable storage systems. Combined with photovoltaic, cogeneration and electric car charging at home, E3/DC has created a significant sales volume of 850 units in Germany based on professional industrial production and a new product architecture since 2012. Andreas Piepenbrink, founder and CEO, explains the company and outlines its product applications…

Spain – lithium ion based island system – 90% savings in diesel

Historical demand for storage – 100% off-grid operation

Mobile base stations for telecommunication and luxury homes in sunny regions are linked to diesel driven systems. There is no other option, because the cost for power generation and grid connection in the middle of nowhere are way too expensive for private or small commercial operation. Countries like China are demanding 500,000 new base stations for mobile networks, while countries such as turkey and MENA countries are predicting similar numbers in total for the next years. Meanwhile, mobile and smartphone communication is replacing 50% of computer communication. The new generation of people business has arrived and it is replacing the laptop by smaller devices, such as smart laptops and tablet devices.

E3/DC has put taken electrical power generation into a new era by using a central and most efficient hybrid system (DC power and AC output) into place, which provides:

• Up to 100% diesel savings

• 35% diesel savings compared to AC technology combined with lead acid battery

• The most efficient and long lasting lithium ion battery technology, including up to 98% efficiency

• The most efficient inverter system efficiency of more than 92% in small load operation

E3/DC’s S10-Hybrid System enables complete households, base stations and off-grid applications to have 3 phase power. The 3 phase diesel generator is coupled, when the battery is empty or when peak power is requested, by the owner or operator. The new era of mobile base stations are driven by:

• Ease of operation and installation using central and integrated systems instead of linked components

• Remote control on component level

• Cost savings using lithium ion batteries based on improved cycle of up to 365 day operation for 15 years

• Precise and cost-effective service (using backoffice)

Like LTE, the carrier Wi-Fi is pacing fast in the Global Telecom industry. With the increasing need of offloading the cellular traffic onto an alternative network, Wi-Fi is making its way into the carrier domain. Driven by large-scale LTE adoption and the omnipresence of Wi-Fi-enabled consumer

Fuel savings compared to lead acid + AC inverter related design (referring to 5000kWh consumption – Spanish home)

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electronic devices, the industry is expected to see the integration of Wi-Fi with the LTE small cell base stations. Such devices will have an LTE interface at the telecom network side and a Wi-Fi interface at the end-user device. The small cell LTE base stations supporting Wi-Fi capabilities are expected to emerge in the LTE small cell configuration. The Wi-Fi enabled LTE base stations are expected to cross two million units shipped by 2016.

According to the report, one of the main drivers is the increasing demand for data services. In recent years, the Telecom industry has witnessed a surge in data driven services, a trend that is likely to continue during the forecast period. Such services require higher bandwidth, greater speed, and better coverage. LTE is accepted to be the most efficient mobile technology to cater to the increasing data services. Since base stations of different specifications can be deployed to cover and process the RF signals in cells as well as in blind spots for these services, the steady growth in the Mobile Data market will boost the demand for the Global LTE Base Station market.

Furthermore, the report states that one of the main challenges is the overarching dominance of HSPA/HSPA+ technology. HSPA and LTE are the two technologies for handling the unstoppable data services. Given HSPA’s first mover advantage and relatively evolved ecosystem, HSPA poses a major threat to the growth of LTE technology. During the forecast period, there will be a continued tussle between LTE and HSPA acceptance.

Spain – off-grid market for hybrid storage from Germany

Left: stirling motor integrated in gas heating system; right: roof system with photovoltaic modules and lithium ion storage system

Combination of heat and electricity – 100% autonomy in electricity for residential homes

Source IEA: energy price development – electricity cost versus gas cost

Oil burners are replaced by gas burners and in new houses, modern isolation heat pumps have won significant market share.

The low emission standards in households and residential homes have led to many types of heating devices. However, the gas price intends to underrun the electricity cost. Therefore electricity will be become a more worthy resource than gas.

The power distribution shows, that PV production should match the gas2power conversion. In case of small houses there is much more energy available than needed. This energy can be fed into the grid or can be avoided by smart control of the production inverter. The diagrams show that 50% reduction of overpowering will only result in 5% loss in annual autonomy. The general distribution between solar and gas shows ideal and comprehensive behaviour.

Distribution between solar and gas close to 100% autonomy.

100% autonomy using overpowering factor 2,x

100% autonomy savings in electricity (basis 5000kWh consumption

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Cogeneration is a system of commercially available technologies that decrease total fuel consumption and related GHG emissions by generating both electricity and useful heat from the same fuel input. Cogeneration is often called Combined Heat and Power (CHP), since most cogeneration systems are used to supply electricity and useful heat. However, the heat energy from electricity production can also be used for cooling and other non-heating purposes, so the term “cogeneration” is more inclusive. Cogeneration is a form of local or distributed generation as heat and power production take place at or near the point of consumption. For the same output of useful energy, cogeneration uses far less fuel than traditional separate heat and power production does, which means lower greenhouse gas (GHG) emissions as fossil fuel use is reduced.

While this document focuses on the GHG emission reductions, cogeneration offers other benefits that include:

• Reducing other air pollutants (e.g., SO2, NOX, Hg)

• Providing on-site electricity generation that is resilient in the face of grid outages thus providing power for critical services in emergencies and avoiding economic losses

• Avoiding or deferring investments in new electricity transmission and distribution infrastructure and relieving congestion constraints on existing infrastructure.

• Using existing industrial and commercial sites for incremental power generation rather than building new power plant capacity at greenfield sites

The largest potential for increased utilisation of cogeneration is in the industrial sector. In the United States, the industrial sector is responsible for approximately one third of the country’s total energy consumption. The industrial sector’s direct GHG emissions account for 20 per cent of the U.S. total, and an additional 9 percent of U.S. GHG emissions come from centrally generated electricity consumed in the industrial sector. Direct industrial emissions come from on-site combustion of fossil fuels and from non-energy related process emissions.

While the greatest potential for increasing cogeneration is in the industrial sector, the technology is also increasingly available for smaller-scale applications in residential and commercial facilities. Cogeneration systems appeal to business operations

requiring a continuous supply of reliable power such as data centres, hospitals, universities, and industrial operations.

District Heating and Cooling (DHC) in cities and large institutions is one established use of cogeneration (and one widely employed in Europe) in the residential and commercial sectors. District heating can meet low and medium temperature heat demands, such as space heating and hot tap water preparation, by using waste heat from electricity generation to heat water that is transported through insulated pipes. District cooling takes advantage of natural cooling from deep water resources as well as the use of waste heat to cool water via absorption chillers. About 85 urban utilities and 330 campuses in the United States use district energy to reduce costs and GHG emissions, increase efficiency, and improve reliability.

100% autonomy for electricity and mobility – combination of PV, Co-Generation and solar based car charging

100% autonomy savings in electricity including mobility (basis: 20.000km annual driving range + 5000kWh household

E3/DC type 2 charger for solar self consumption – self consumption instead of grid usage

Electric cars like BMW i3 and Tesla Model S are targeting premium customers. Nevertheless, those cars and owners can contribute significantly to maximum autonomy in electrical power by using solar production, batteries and Co-Generation.

The diagram shows the long-term cost savings based solar- and Co-Gen-based driving. In this case, the:

• Production of solar and stirling motor are feeding the household and two cars, resulting in

• 5000kWh electricity from living with 100% autonomy

• 20000km ~ 40000kWh with 50% savings based on electric efficiency versus fuel and based on the highest self consumption coming from own production.

Summary for On-Grid market

Cogeneration is a system of commercially available technologies that decrease total fuel consumption and related GHG emissions by generating both electricity and useful heat from the same fuel input. Together with solar and lithium battery powered storage systems:

• Cogeneration combined with storage can easily achieve 100% self produced electricity for residential homes, resulting in lowest possible emissions and highest cost savings.

• Combined with electric cars, the energy costs of mobility can be reduced drastically less than 25% in terms of fuel cost. All three technologies (storage, electrical motors and inverter technology) in mobility, heat and storage will benefit to efficiency, durability and reliability at home.

Summary for Off-Grid market

E3/DC has put the electrical power generation into a new era by using a central and most efficient hybrid system (DC power and AC output) into place, providing up to 100% diesel savings and

• 35% diesel savings compared to AC technology combined with lead acid battery

• Maintenance and service cost reduction are down on a new and minimum possible level (installation, operation).

www.e3dc.com