<s>
GridLAB-D	B-Application
is	O
an	O
open-source	O
(	O
BSD	B-Operating_System
license	I-Operating_System
)	O
simulation	O
and	O
analysis	O
tool	O
that	O
models	O
emerging	O
smart	B-Architecture
grid	I-Architecture
energy	O
technologies	O
.	O
</s>
<s>
It	O
is	O
used	O
primarily	O
to	O
estimate	O
the	O
benefits	O
and	O
impacts	O
of	O
smart	B-Architecture
grid	I-Architecture
technology	O
.	O
</s>
<s>
Funding	O
for	O
the	O
research	O
and	O
development	O
of	O
GridLAB-D	B-Application
has	O
come	O
from	O
multiple	O
sources	O
,	O
including	O
the	O
United	O
States	O
Department	O
of	O
Energy	O
(	O
US	O
DOE	O
)	O
and	O
the	O
California	O
Energy	O
Commission	O
(	O
CEC	O
)	O
.	O
</s>
<s>
GridLAB-D	B-Application
was	O
developed	O
with	O
funding	O
from	O
the	O
US	O
DOE	O
Office	O
of	O
Electricity	O
(	O
OE	O
)	O
at	O
Pacific	O
Northwest	O
National	O
Laboratory	O
(	O
PNNL	O
)	O
,	O
in	O
collaboration	O
with	O
industry	O
and	O
academia	O
.	O
</s>
<s>
It	O
is	O
available	O
for	O
Microsoft	B-Application
Windows	I-Application
,	O
macOS	B-Application
and	O
several	O
Linux	B-Application
implementations	O
and	O
released	O
through	O
GitHub	B-Application
.	O
</s>
<s>
Original	O
work	O
on	O
GridLAB-D	B-Application
was	O
started	O
at	O
PNNL	O
in	O
2003	O
under	O
a	O
Laboratory	O
Directed	O
Research	O
and	O
Development	O
project	O
called	O
PDSS	O
.	O
</s>
<s>
Starting	O
in	O
2008	O
GridLAB-D	B-Application
was	O
made	O
available	O
to	O
the	O
public	O
under	O
a	O
BSD-style	O
open-source	O
license	O
with	O
a	O
US	O
Government	O
right-to-use	O
clause	O
.	O
</s>
<s>
US	O
DOE	O
has	O
supported	O
GridLAB-D	B-Application
through	O
both	O
direct	O
funding	O
and	O
funding	O
of	O
projects	O
that	O
support	O
enhancements	O
to	O
the	O
simulation	O
's	O
capabilities	O
.	O
</s>
<s>
In	O
2017	O
the	O
CEC	O
awarded	O
several	O
grants	O
to	O
enhance	O
GridLAB-D	B-Application
with	O
the	O
aim	O
to	O
support	O
use	O
in	O
California	O
regions	O
operated	O
by	O
the	O
investor-owned	O
utility	O
ratepayers	O
.	O
</s>
<s>
Hitachi	O
America	O
Laboratory	O
(	O
HAL	O
)	O
leads	O
the	O
GridLAB-D	B-Application
Open	O
Workspace	O
(	O
GLOW	O
)	O
project	O
to	O
develop	O
a	O
user-interface	O
for	O
GridLAB-D	B-Application
.	O
SLAC	O
National	O
Accelerator	O
Laboratory	O
(	O
SLAC	O
)	O
leads	O
the	O
High-Performance	O
Agent-based	O
Simulation	O
(	O
HiPAS	O
)	O
project	O
to	O
enhance	O
the	O
performance	O
of	O
GridLAB-D	B-Application
.	O
HiPAS	O
GridLAB-D	B-Application
is	O
released	O
through	O
GitHub	B-Application
.	O
</s>
<s>
SLAC	O
also	O
leads	O
the	O
Open	O
Framework	O
for	O
Integrated	O
Data	O
Operations	O
(	O
OpenFIDO	O
)	O
to	O
support	O
data	O
exchange	O
between	O
GridLAB-D	B-Application
and	O
other	O
widely	O
used	O
power	O
system	O
data	O
collection	O
,	O
modeling	O
,	O
and	O
analytics	O
tools	O
.	O
</s>
