2016
© Danvest Energy A/S
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A Game Changer for Solar-Diesel and Wind-Diesel Hybrid Solutions
© Danvest Energy A/S
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Danvest Energy A/S
Danvest Energy A/S, headquartered in Copenhagen, Denmark, is an innovative diesel technology
company and a world leader in hybrid wind-diesel and solar-diesel power.
Since its inception in 1994, Danvest has developed and sold the “Danvest Power Box®”, a system with
unique low-load operation and fast responds capabilities that allow diesel generators to work efficiently
with intermittent renewable energy sources, maximizing fuel savings and minimizing CO2 emissions.
Applications for the Danvest Power Box® include:
stand-alone hybrid power plants for mines, islands and other remote locations
emergency and backup power for off-shore and on-shore wind farms
test and service units of wind farm commissioning
In addition to the manufacturing of the Danvest Power Box®, Danvest’s capabilities include the design and
installation of hybrid projects that are optimized for each application.
© Danvest Energy A/S
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Danvest Power Box®
The Danvest Power Box® is a 20 or 40 foot container housing a conventional diesel generator fitted with
Danvest’s unique low-load system. Features and benefits of the Danvest Power Box® include:
components and sub-systems widely used in the industry
a simple, robust and reliable design with a design life up to 20 years
SCADA/VPN monitoring
scalability depending on the customer’s energy needs
containerized design that facilitates transport and installation
yearly fuel savings and CO2 reduction between 30% and 70% when used with wind and/or
solar generation
investment payback periods for the entire installation including the wind and/or solar plant
between 3 and 6 years
The Danvest Power Box® can improve the economics and environmental impact of an existing or newly
constructed diesel-based energy generation facility by providing an effective means of supplementing
the facility with wind and/or solar generation.
© Danvest Energy A/S
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Danvest Power Box®
© Danvest Energy A/S
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Unique Low-Load Operation
The Danvest system minimizes diesel fuel consumption by maximizing the amount of usable renewable
power through its unique low-load capability:
Danvest system allows a conventional diesel generator to “low-load”, i.e. to operate with
minimum fuel consumption between 30% and zero load when the customer’s energy needs are
satisfied by nearby wind or solar generation
when renewable energy generation exceeds the customer’s needs, the diesel generator
operates in reverse power and fuel consumption nears zero
when operating in full reverse power the diesel engine can be clutched out from the alternator
and stopped completely while the alternator remain spinning on the busbar
the system provides a fast and stable spinning reserve at every operation mode. At engine stop
operation, the diesel engine rapidly restart and clutch in when needed to carry load again
Danvest dump-load controller assist the engine operation and secures a dynamic load balance
between solar and/or wind energy fluctuations and variations in energy demand when the
diesel generator operates in reverse power or is clutched out completely
© Danvest Energy A/S
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Danvest Power Box®
© Danvest Energy A/S
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Operation Modes
Danvest system can operate in low load mode and in reverse power with low emission levels, with the fuel consumption reduced to a minimum
Danvest system has no or very low fuel consumption when solar (and or wind) covers the power consumption with 100% or more
For a 648kWe Cummins genset based Danvest system
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Danvest Responds Capabilities
The Danvest system has a fast and stable responds from both low load and reverse power. It ensures a
stable and fast spinning reserve in normal load all the way down in low load and reverse power
operation. Step load tests of a 648kWe genset based Danvest solution show:
frequency variations are within +/- 0,5Hz for all load steps tests in reverse power and low load
with load steps of 10% of the genset capacity per 1 or 2 sec. (65kWe/1 or 2 sec.) which is
approx. 1,2 times the worst case step load level criterion known from the solar industry
when applying larger load steps of 20% of the gensecapacity per 1 or 2 sec. (130kWe/1 or 2
sec.) in reverse power and low load, the frequency variations are maximum t from 49,2Hz to
50,55Hz
responds of the Danvest modified genset in the Danvest system does not significantly vary
whether the genset is in reverse power or in low load or normal load operation
if the engine is clutched out and stopped, it takes 7 sec. from start-up the .engine to the genset
is ready to carry load. During engine stop with dumpload controlling frequency is stable
Danvest system is able to handle and survive large sudden load variations (big load step of
approx. 60% of the genset capacity was tested from full reverse power operation)
© Danvest Energy A/S
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Development and Confirmation
1992 Concept for the Danvest Power Box® is developed by Søren Qvist Vestesen, whose family
has been involved in the Danish diesel industry from the early 1900s.
1997 First commercial wind-diesel project is installed in Malaysia, consisting of a 160kW Danvest generator power plant and a 150kW wind turbine.
2006 The third test report from RISØ (the Danish Laboratory for the wind industry) is issued based for a project consisting of two Danvest generators and a 600kW wind turbine.
2013 Siemens Wind Power satisfactorily completes testing of the Danvest Power Box® with its 3.6MW wind turbines.
2014 Caterpillar and Cummins, two of the world’s largest suppliers of diesel generators, accept the
Danvest low-load diesel technology and agree to provide worldwide guarantees on engines fitted with the Danvest system.
2015 Completed testing with PON-CAT for solar-diesel.
© Danvest Energy A/S
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Market Segment: Solar-Diesel
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Solar-Diesel System Diagram
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Solar-Diesel Configuration
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Solar-Diesel Benefits & Economics
high solar penetration up to 100% during solar hours
30-40% yearly fuel savings
30-40% yearly CO2 emissions reduction
fuel haulage risk reduction
© Danvest Energy A/S
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Solar-Diesel – Island Project
39.5% yearly fuel savings with Danvest Low Load Diesel approach
© Danvest Energy A/S
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Solar-Diesel – Mining Project
29.3% yearly fuel savings with Danvest Low Load Diesel approach
© Danvest Energy A/S
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2MW Solar-Diesel Power Supply AUD
Danvest: Power demand
Containarized Hybrid Power Plant 2.000 kW/hour
Danvest Control & Power System 17.520.000 kW/year
2x1000kW Danvest Low-Load gensets
2x1000kW standard genset Solar share
SubTotal 3.235.000 6.132.000 kW/year
Reactor Unit 100.000
Solar controller 50.000 Solar Penetration
Service kit - 1 year 40.000 35% Yearly
International and local transport 144.000
Local civil: Foundation for containers, fuel system connection, cables etc. 414.080 Fuel consumption
Installation, integration, commissioning 120.000 3.074.760 Liter/year
Total Danvest 4.103.080
Solar Contractor: Fuel saving
Solar System 1.655.640 Liter/year
2500kW PV panel system
Invetor system Fuel price
Service kit - 1 year 0,70 AUD/liter
International transport
Subtotal REC price
80 AUD/MWh
Local works Solar System
Local transport
Local civil works incl. foundations Excluding:
Power & communication cables Any Australian import tax
Installation, commissioning Fuel Storage system at site
Subtotal Substation to consumer
Project Management
Total 5.250.000
Total Capex 9.353.080
Solar-Diesel
Fuel 2.152.332 Danvest Energy A/S
Service & maintanance solar system 65.625 Date 20-03-2016
Service & maintanance Gensets 443.782
REC return -490.560
Danvest monitoring 24.000
Contigency 35.000
Operating expenses SYSTEM 2.230.179
Per kWh 0,13
Diesel Only
Fuel 3.311.280
Service & maintanance Gensets 522.096
Contigency 35.000
Operating expenses DIESEL ONLY 3.868.376
Per kWh 0,22
Net Saving -1.638.197
Simple payback of initial investment -5,7 years
© Danvest Energy A/S
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Market Segment: Wind-Diesel
© Danvest Energy A/S
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Wind-Diesel System Diagram
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Wind-Diesel Configuraion
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Wind-Diesel Benefits & Economics
high wind penetration up 100% during wind hours
50-60% yearly fuel savings
50-60% yearly CO2 emissions reduction
fuel haulage risk reduction
© Danvest Energy A/S
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Wind-Diesel – Mining & Island Projects
50-60% yearly fuel savings with Danvest Low-Load Diesel approach
© Danvest Energy A/S
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2MW Wind-Diesel Power Supply (secondhand wind turbines) AUD
Danvest: Power demand
Containarized Hybrid Power Plant 2.000 kW/hour
Danvest Control & Power System 17.520.000 kW/year
2x1000kW Danvest Low-Load gensets
2x1000kW standard genset Wind share
SubTotal 3.384.000 9.636.000 kW/year
Reactor Unit 100.000
Service kit - 1 year 40.000 Wind Penetration
International and local transport 144.000 55% Yearly
Local civil: Foundation for containers, fuel system connection, cables etc. 433.152
Installation, integration, commissioning 120.000 Fuel consumption
Total Danvest 4.221.152 2.128.680 Liter/year
Wind Contractor:Wind System Fuel saving
3400kW secondhand wind system 2.601.720 Liter/year
Service kit - 1 year
International transport Fuel price
Subtotal 0,70 AUD/liter
Local works Wind System REC price
Local transport 80 AUD/MWh
Local civil works incl. foundations
Power & communication cables
Installation, commissioning Excluding:
Subtotal Any Australian import tax
Fuel Storage system at site
Project Management Substation to consumer
Total 4.080.000
Total Capex 8.301.152
Wind-Diesel
Fuel 1.490.076
Service & maintanance wind system 287.153
Service & maintanance Gensets 391.572 Danvest Energy A/S
REC return -770.880 Date 20-03-2016
Danvest monitoring 24.000
Contigency 35.000
Operating expenses SYSTEM 1.456.921
Per kWh 0,08
Diesel Only
Fuel 3.311.280
Service & maintanance Gensets 522.096
Contigency 35.000
Operating expenses DIESEL ONLY 3.868.376
Per kWh 0,22
Net Saving -2.411.455
Simple payback of initial investment -3,4 years
© Danvest Energy A/S
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20MW Wind-Diesel Power Supply
Items AUD Power demand
Wind Turbine System 20.000 kW/hour
26MW wind turbines farm 175.200.000 kW/year
Civil work including cabling and roads
Subtotal 65.000.000 Wind share
87.600.000 kW/year
Danvest Hybrid Wind-Diesel Power Plant
14MW Danvest low-load gensets Wind Penetration
16MW standard gensets 50% Yearly
Reactor Unit
Civil works Fuel consumption
Subtotal 34.000.000 45.552.000 Liter/year
Spare Parts Wind Turbine 1.195.652 Fuel saving
Spare Parts Danvest System 680.000 22.776.000 Liter/year
Subtotal 1.875.652
Fuel price
Project Development 0,70 AUD/liter
Wind Messurements 200.000
Legal Fees 500.000 REC
Technical Due Diligence 150.000 80 AUD/MWh
Tax and Account Due Diligence 50.000
Environmental Studies 100.000
Project Development Contigency 100.000 Excluding:
Subtotal 1.100.000 Any import tax
Substation
Total 101.975.652 Fuel storage system
Project EPC Fee 5% 5.098.783
Continegency 3.5% 3.569.148
Total Capex 110.643.583
Wind-Diesel
Fuel 15.943.200 Danvest Energy A/S
Operation expense wind system 1.630.435 Date 20-03-2016
Service & maintanance Gensets 3.915.720
REC return -7.008.000
Contigency 250.000
Operating expenses SYSTEM 14.731.355
Per kWh 0,08
Diesel Only
Fuel 31.886.400
Service & maintanance Gensets 5.220.960
Contigency 250.000
Operating expenses DIESEL ONLY 37.357.360
Per kWh 0,21
Net Saving per year -22.626.005
Simple payback of initial investment -4,9 years
Danvest is partner with
Simens Australia and
Eurus Energy Holdings
since 2014 for large scale
Wind-Diesel in Australia
© Danvest Energy A/S
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Adding Battery to Low-Load Diesel
Danvest already obtain high fuel saving results without battery
no need for battery for grid support
no need for battery for engine stop
Battery (or similar storage) can improve fuel saving results
need for less battery and solar and/or wind capacity
only charge battery with surplus solar and/or wind
only need for shifting surplus solar and or wind
only one circle per day
Add battery any time / add battery when makes sense
2016
© Danvest Energy A/S
All rights reserved.Page 25
www.danvest.com
Thank you
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