can be double-clicked for a larger copy.) Since our
original 16 panels (below right) were installed 10 years ago,
we've purchased two EVs, above.
But we had
room on our garage roof, right, and house roof for 40 more solar panels
as you can see above. The original 16 panels were 230 W each.
The plan was to
cover the maximum amount of our south-facing roof with panels (40) in
addition to the gray area - our 10-year old 16 panels.
The day began with chalking the location of the hangers for the rails.
Our original 16 solar panels are on the upper right.
Tiles were removed and hangers were bolted to rafters, caulked, and
Meanwhile, a bush too close to the MPU was removed and Taylor took out
the old panel and put in a larger one (center) and a combiner box to
combine the original solar system's output and the new panels output.
The panels were a skid full - 30 in the carton, 10 on top.
Address of installer's warehouse. Specifications of the panels
and microiverters delivered.
Enphase IQ8PLUS microinverter: The industry’s first
grid-forming microinverters with split-phase power conversion
capability to convert DC power to AC power efficiently. Has
super-fast response times to changing loads and grid events,
alleviating constraints on battery sizing for home energy
systems. Part of the Enphase Energy System, IQ8+ Microinverters
integrate with the Enphase IQ Battery, Enphase IQ Gateway, and the Enphase App monitoring
and analysis software. Includes
an industry-leading limited warranty of up to 25 years. Connect PV
modules [solar panels] quickly and easily to IQ8+ Microinverters using
the included Q-DCC-2 adapter cable with plug-n-play MC4
Solar Panels: The Canadian Solar CS3N-395MS 395W
all-black panels feature low-temperature coefficients offering better
shading tolerance and lower hotspot temperatures. The Canadian
Solar CS3N 395W solar panels are 19.4% efficient or higher. They are
rated at 5400Pa for snow and 2400Pa for wind loads. The positive-only
tolerance guarantees that you get the same or more power than the
panel’s power rating. They come with a 25-year linear power
output warranty and a 25-year warranty on materials and workmanship.
Cell Technology: Monocrystalline
Dimensions: 76.4 x 41.3 x 1.38 in
Weight: 49.6 lbs
Module Frame Material: Black Anodized aluminum
Module Frame Thickness: 35mm
Module Backsheet Material: Black
Module Connector: T4 series or MC4
Panels per Pallet: 30 pcs
While the crew finished the hangers and replaced the tiles, the panels
were unpacked and the rails were connected to the hangers.
Microinverters attached to rails to be connected to panels.
Panels lifted to garage roof, and two wires connected from panel to
microinverter and microinverter connected to line down to main
Left, Final step, 4 screws attach panel to rails. Above, and the
process continues on the garage roof with our 16 original panels on the
house roof above.
The system is four 10-panel sections. Left, the garage panels'
wire comes over the garage roof and across the valley [raised for
earthquake purposes?] then up to the peak of the house roof, across and
down to the meter.
The house section starts with perfect alignment of the first two panels.
At nearly 6 ft. by 4 ft. the panels cover quickly. Right,
panel adjustments being made while crew members fish wires down the
roof line to the right to the new main panel at round level.
Only casualties were 3 panels that had been punctured by a forklift's
fork that had gone through the carton damaging 3 panels. Above is
back of one punctured panel, and the hole in the carton.
All panels except the 3 were installed and before
long three replacement panels were delivered and installed for a
Final job was to cut off excess rails and put on caps. Right,
view from the ground level of the clearance between panels and tile
Taylor continued installing the MPU, left, the combiner box and main
With the panel buttoned up, and the system in test mode, we were
producing 9.02 kW more than we were using in the air conditioned house.
Above, all new hardware on the east wall, except for the air
conditional and its shutoff. New panel with meter awaiting first
of 4 inspections. Far right, combiner box combining A/C from
inverter for original 16 panels, and A/C from the 40 new panels which
each have an inverter. App will eventually show output of each of
the 40 inverters.
The next day, with mostly cloudy skies, we were producing 2.96 kW more
than we were using for our air conditioned house.
On the left, under
the 082, is a constantly moving arrow. When it
moves to the left, toward the street, it is producing more electricity
we are using, and the -013.99 kW is how much over we are
producing. This was a more sunny day.
Final View of the Finished Solar Installation with our two Tesla
So now we have 56 solar solar panels and will be charging our two
Teslas, and running our air conditioned house, for free, with capacity
for more electrical use.
Time-Lapse Movies of
the solar panel installation: