Reflections
on the Tenth Week of Fall – Snowy
Solar
Panels
First Snow - Solar Panels
Standing
in our
south yard, I
squinted into the
glaring
sunshine
that
bounced
off the
roof. Sweat
dripped off my nose while
the
EIS
solar
installation
crew knelt on
ladder bridges, drilled
into
the
metal
roof ridges, and
attached racks that
would
hold solar
panels.
That
day, July 19, was the
first time I wondered what would happen to the
solar panels when snow fell.
“Will we make any electricity
if
snow covers the panels?”
Richard,
the
crew
leader,
paused
halfway down a
ladder.
“No, Janet.” His
voice had a lyrical African accent.
“Snow will prevent the sun from reaching the solar cells.”
My
face must have formed
what
Spence calls a
Pulitzer-prize-winning
expression
because
a
smile crinkled Richard’s
dark skin.
“Now,
Janet. Don’t
worry. The
sun will melt the snow. The snow will slip off
the panels, and they will produce electricity again.”
Richard’s
assurance lasted through October when gritty rain hit my face
and early November when snowflakes melted on landing.
Then,
this
past Monday, I woke and
peeked out the bedroom
window.
Less
than an inch of snow covered
the
gardens, fields, and deck. Snow lined tree branches and capped
dried wildflowers. But
snow
didn’t cover the
dirt road.
I
walked into the great room to quiz Spence. “The road’s bare. Do
you think the solar panels are bare too?”
“No.”
His
eyes searched the
computer screen for what happened this day in history to top his
RHINO website. “Cars don’t run on the solar panels.”
“If
cars had melted the road
snow,
there’d be bare
tracks not a bare road.”
He tapped
keys and clicked tabs. “Don’t
worry.”
“I
not
worrying. I’m wondering.” I
walked
toward
the bedroom.
“I’ll
take
my
camera and check.”
Spence’s
“Just relax,” echoed down the hall. “There’s not enough light
to take pictures yet.”
Changing
directions, I climbed to the loft, stretched
in standing yoga poses, hustled
back downstairs, and
grabbed my camera.
“Eat your breakfast.”
Spence set a steaming plate on the table. “The snow will be there
when you finish.”
Glancing
out the window at
the
cloudy
sky
and
listening to Morning
Edition
on NPR,
I gulped a shwarma, pear slices, and oatmeal.
Then
I
swallowed
vitamin supplements with rooibos tea, pulled
on
my
coat,
and
stepped
into boots.
Man
chuckles followed the camera and me out the door.
Since
my boots slipped on the snowy cement porch, I hung the camera around
my neck, held onto both railings, and slow-stepped
to the driveway.
Snow covered the north roof of the log house and the south
roof of the garage. I walked around the house and stared at its south
roof.
Covered. Snow blanketed all
thirty panels. Three slits marred the smooth surface where pencil
thin gaps let snow fall between
panels to the roof.
After
pacing the road and the south garden for the best photo angle, I
walked about admiring
first snow beauty–the snow crowned Queen Anne’s lace, the snow
lined spruce branches,
and the snow topped
bird’s nest hidden in the middle of a
burning bush.
First Snow - Queen Anne's Lace |
When
I stepped back inside, Spence paused his computer key tapping. “That
took a long time. What did you find out?”
I
gave him a two minute summary, gathered
my swim gear, and
left to swim laps between 11:00 a.m. and noon at the YMCA.
Sunshine filtered through the
glass block windows and created
glowing patches in the pool. I swam in and out of the warm
patches and visualized the solar panels on the roof. Had the clouds
cleared at Wells Wood? Did the snow melt and slip off the solar
panels?
After five sixths of a mile
and a hot shower, I drove home. Houses
at the corner of Route
173 and West Creek Road still
had snow on their roofs. But those houses faced east not
south.
I parked in the garage, swung
the wet swim bag over my shoulder, and
conducted
a 1:00 p.m. roof check. No snow on the south roof of the garage but
the house’s north
roof wore the same snow blanket that it had when I’d left. I dumped
my swim bag inside, grabbed my camera, and hustled to the south side
of the house.
Sunshine sparkled off clear,
electricity-generating solar panels. Ragged snow clumps stuck out of
the gutter. One clump dislodged and splashed onto a foot high pyramid
of snow lining the far edge of the
ramp. Snow
melt trickled down the drainpipe.
Several days later, I studied
the data Sunny Portal collected from our Sunny Boy inverters.
Peak
production often occurred during the 11:00 and noon
time frames. Tuesday, for example, the panels generated 7 kWh in
the 11:00 hour and 6.75 kWh in
the noon
hour. Monday, with the clouds and snow cover, the peak shifted to
noon, 4.95 kWh, and 1:00, 4.40 kWh. Monday’s 11:00 hour, while I
swam in and out of sunny patches
in the pool, totaled
0.25 kWh. Rather than generate electricity that hour, sunshine had
melted snow.
Monday had proved Richard’s,
“Now, Janet. Don’t worry,” right. The sun melted the snow. The
snow slipped off the panels, and they produced electricity again.
At least his scenario worked
for less than an inch of snow. How long would it take the sun to melt
two, four, or even six inches of snow off the solar panels?
Hmmm.
I
didn’t wonder what Spence would say if I asked him to unfold his
heavy extension ladder and lean it against the gutters so I could
climb and sweep snow off the lower panels.
First Snow - Sunshine on the Solar Panels |