Reduce the Cost of energy by employing Direct Coupling Technology and use the energy from lowest cost resources. Nextek power systems use all available energy from locally generated sources and then then 'fills in' with power from the DC microgrid.

1. ENERGY EFFICIENT POWERENERGY EFFICIENT POWER
SYSTEMS USING DCSYSTEMS USING DC
MICROGRIDSMICROGRIDS

2. DC MICROGRIDSDC MICROGRIDS
DC Microgrids enable significant energy savings and the
simple integration of advanced power generation
technologies.
Many modern appliances such as laptops, LED lighting
and communications equipment run on DC power (the
type provided by batteries), yet we plug them in to the AC
mains.
Also renewable technologies such as solar photovoltaics
and wind power become more prevalent at a household
level, DC microgrids could be a cheaper and more efficient
alternative.
EMerge Alliance Corp - ©2009-2010

3. DC MICROGRID BENEFITSDC MICROGRID BENEFITS
1) Reduced energy costs
2) Security against higher utility costs
3) More efficient energy use (10% to 40%)
4) More reliable service
5) Safer power at 24v
6) Highly scalable system designs
7) Reduced future renovation costs
8) Measured 50% reduction in installation, moves and changes
EMerge Alliance Corp - ©2009-2010
www.nextekpower.com/case-studies/direct-coupling-dc-microgrid

4. INNOVATORS IN DC POWER SYSTEMSINNOVATORS IN DC POWER SYSTEMS
Nextek Power Systems provides many innovating
Power System Methods using DC Microgrids.
They directly couples Nextek’s high-efficiency DC ballasts, DC
fans and other DC devices to DC power sources.
EMerge Alliance Corp - ©2009-2010
Do more with your energy with Nextek Power Systems!!Do more with your energy with Nextek Power Systems!!
Reach @Reach @
Nextek Power Systems, Inc.
160 Wilbur Place, Suite 500
Bohemia, NY 11716
Reach @Reach @
Nextek Power Systems, Inc.
160 Wilbur Place, Suite 500
Bohemia, NY 11716
Call @Call @ (313) 887-1321
Email @Email @ info@nextekpower.com

5. ZERO ENERGY BUILDINGS (ZEB)ZERO ENERGY BUILDINGS (ZEB)
Buildings that produce as much energy as they use
What’s likely to change in the approach to design/build?
1) Integrated design and operations planning
2) Site renewable energy strategies get maxed out
3) Energy Storage technology will allow Grid independence breakthroughs
4) System Intelligence - More control, monitoring, verification of everything
EMerge Alliance Corp - ©2009-2010

6. Sensor &
Controls
HVAC
Actuators
Electronic
Lighting
ENERGY SOURCES ELECTRO-ACTIVE DEVICES
AC/DC Site
Generation
DC Campus
Fuel Cells
AC Line
Power
DC Wind
Power
DC
Photovoltaic
Security & Safety
AV/IT Devices
OPPORTUNITY:
Up to 30% less energy, 15% less capital, 200% plus more reliable
Data & Telecom
Centers
SOLUTIONSOLUTION
A simplifiedsimplified AC/DC hybrid coupled power network
Coupled
AC/DC Power
Sources
▲
DC Power
Distribution
Management
▼
Wireless
Controls
BACnet
TCP/IP
EMerge Alliance Corp - ©2009-2010
www.nextekpower.com

7. Too Many Inefficient Power ConversionsToo Many Inefficient Power Conversions
AC Grid
DC sources
DC storage
AC
DC
DC
AC
DC /
Semiconductor
Based Loads
ACDC
ACDC
ACDC
ACDC
AC
DC
AC

8. DC MICROGRIDDC MICROGRID
SIMPLE EFFICIENT DIRECT
AC Grid
DC sources
DC storage
DC
DC
DC /
Semiconductor
Based Loads
ACDC
DC
DC
DC
DC
DC
• Lower Operating
Expense
• Safer
• Higher Efficiency
• Fewer Components
• More Reliable
• Less Real Estate
• Reduced Carbon
Footprint

9. Nextek Power SystemsNextek Power Systems
ProductsProducts
Power Servers
24V PSM-1600
24V PSM-1600 ALT
380V PSM-1600
MPPT
DC Ballasts
Popular lamp types including
T5, T8 & CFL
High Efficiency
24V & 48V styles
24V Emergency Ballast
Dimmable
DC Fans-Nextek Fanworks
12/24V DC Powered ceiling
fans
Vari-Cyclone and Vari-Fan
styles
Speed Controller available
www.nextekpower.com

10. “I’d put my money on sun and solar energy.
What a source of power! I hope we don’t have
to wait until oil and coal run out before we
tackle that."
~Thomas Edison, 1880’s
Ref:
DC Microgrids: A Direct Route To Energy Efficiency by John H. Jahshan