Commission's Rule 21 Working Group determines that Nextek's
grid-connected solar PV system does not require a utility
Feb 24, 2005 Oakland , CA . The California
Energy Commissions Rule 21 Working Group determined
today that grid connected solar PV systems installed
using the Nextek technology do not require a utility
The Rule 21 Working Group develops the interconnection
requirements for distributed generation. It is made
up of representatives from California utilities, regulatory
agencies, and industry. Californias standards
are used as a model by many other states. After analyzing
the architecture this system, they recognized that Direct
Coupled® commercial photovoltaic systems from Nextek
do not require the reviews and approvals needed for
all other grid-tied inverter-based systems.
Before Nextek, all grid-connected photovoltaic solar
systems required an inverter. These inverters, converting
the locally generated electricity to grid-compatible
AC power, use energy themselves, need a utility interconnect
agreement, and are required to shut down in the event
of grid failure.
Now, with the Nextek Direct Coupled ® system, the
DC (direct current) power generated by photovoltaic
panels is used where, when, and how it is generated.
This increases efficiency, enables the lights to stay
on in a power failure, and eliminates the need for a
utility interconnect agreement. Nexteks listing
on California Energy Commissions List of
Eligible Inverters assures that it qualifies for
state, local, and federal incentive programs.
Nextek identifies and powers DC (Direct Current) loads
inside commercial buildings. Fluorescent lighting ballasts
are replaced by high-efficiency DC ballasts and powered
by the PV solar system at up to 98% efficiency. In addition
to lighting, Nextek can power variable speed motor drives,
DC computer power supplies, and other loads. Power for
this system can come from solar panels, wind turbines,
fuel cells, batteries, or any DC power generation equipment.
The Nextek technology uses the locally generated power
first, then uses grid power only when needed.
The Nextek Direct Coupled® photovoltaic system
is currently operating in commercial establishments
around the country including Target Stores, Whole Foods
Markets, Inc., PowerLight corporate offices, an IBEW
training center, the architectural firm of William McDonough
+ Partners, and more.
Bypassing the interconnection agreement made
the installation faster, smoother, and less expensive
Ray Hoyt, Lunardis Markets.
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