|
THIN-FILM: THE FUTURE OF SOLAR?
UniSolar produces a thin-film solar panel made
from amorphous silicon. The core design elements of
their product work best on metal roofs with standing
seams.

Traditional residential solar installations use
crystalline panels because of their high energy
efficiency.
Solar Santa Monica is frequently asked about "thin-
film" solar. Compared to conventional crystalline
panels, thin-film is popular for its cost, surface
integration and flexibility, but overall it is less energy
efficient. For example, one 14 sq. ft. mono-crystalline
panel generates 230 watts of energy while a thin-film
panel of the same size generates 70 watts.
Material reduction makes thin-film solar technology
economical to manufacture and, therefore, less
expensive for the consumer. Large grid-connected
power plants use most of the thin-film panels on the
market today. Advances in building-integrated
photovoltaics assure that you will be seeing more
from thin-film in the future, with solar cells built directly
into materials like roofing tiles and windows.
From Tempe, AZ, First Solar announced an industry
first that made news: thin-film cadmium telluride solar
panels sell for less than $1.00 per watt! Approximately
99% of First Solar's thin-film panels are used for large-
scale systems, but residential installs are made
possible through a partnership with SolarCity.
SolarCity is a leading residential and small
commercial solar power and solar leasing company
in California, Arizona and Oregon. Click here
to read more about First Solar thin-film.
Thin-Film Facts:
Should I use thin-film on my roof? The higher
your energy bills the larger your roof will need to be to
offset thin-film solar panel costs. An average
residential solar PV system is 4 kW; thereby requiring
57 thin-film panels (taking 800 sq. ft.) or 18 mono-
crystalline panels (taking 252 sq. ft).
What constitutes thin-film? Different materials
make up thin-film solar technology, such as:
amorphous silicon (with 6-8% efficiency), copper-
indium diselenide (with ~19% efficiency), and
cadmium telluride (with 7-10% efficiency).
Manufacturers continually investigate and experiment
to find more efficient and cost-effective combinations
of materials, mountings, and installation. Thin-film's
potential for high module efficiencies and low cost
has led to a large increase in private investment.
Is thin-film the future of solar? Thin-film is one
of many solar technologies. Presently, large scale
system projects use thin-film, solar thermal, or
concentrating solar power. Mono or poly-crystalline
solar panels dominate the residential market. It is
dubious to assume one technology will lead the solar
race in every application. Subject to energy needs and
corresponding building structures, each solar
technology fulfills a place in the market. Counting pros
and cons should factor into every application you
intend to do. The research, development and
refinement of energy capturing solar technology are
supported by governmental incentives, utility rebates,
and increased worldwide demand.
.
|
Solar Santa Monica is administered by the City of Santa Monica, Office of Sustainability and the Environment
|
| Spread the Good News |
| |
Thanks to the new tax credit, our Energy Analyses now
show residents locking in solar power for as little as
14 cents/kWh. Paybacks are down to 10-
12
years, and return on investment is at 15-16%
. Naturally, each installation differs, depending on
electricity usage, system size, etc. Contact Solar Santa
Monica to request a new, or updated, analysis of
your property.
|
| |
|
| |
| Mayor Genser Dedicates Live/Work Solar Project |
| |
Mayor Ken Genser describes features of the compact
apartments at 1001 Olympic Blvd., developed by NMS
Properties as affordable living for professionals,
students and seniors. The 30 watt PV array on the
roof, installed by PermaCity, helps keep costs low.
|
| |
|
| |
| Sustainable Quality Awards |
| |
You may see Michael Ware and Drew Lowell-Britt
offering the FREE Solar Santa Monica service at a
variety of venues in our community. Here they are at
the Sustainability Quality Awards, co-sponsored by the
City of Santa Monica, the Chamber of Commerce, and
Sustainable Works.
|
| |
|
| |
| 2008 - The Year of the Pipeline |
| |
Without question, 2007 was a "banner year" for solar.
Total solar photovoltaic (PV) capacity doubled in Santa
Monica, rising from 350 kW to over 700 kW citywide. In
a single year, as much PV capacity was installed as
had been installed in Santa Monica in 16 years. A
highlight of 2007 was the City's biggest installation,
the 181 kW Civic Center Parking Structure.
This past year, 2008, must be recognized as "the year
of the pipeline." Good news: Residential systems
increased, as did commercial systems and capacity.
PV capacity now totals over 1,000 kW (1 MW) in Santa
Monica. And look at what's in the pipeline! In addition
to 226 kW of capacity actually installed -there are over
2.3 MW of PV projects in the City in this
pipeline.
|
| |
|
| |
| Santa Monica's Solar Corridor |
| |
Susan Munves demonstrates progress towards a
Solar Corridor in Solar Santa Monica.
Los
Angeles County created the
Los Angeles County Solar Map, a tool to help the
public calculate solar potential per building. These
estimates utilize satellite terrain and elevation data to
then estimate solar electric potential for every 25 sq. ft.
Taken into account is tree shading, nearby
obstructions, and roof protrusions.
Solar Santa Monica used this new GIS program and
identified ideal solar rooftops on commercial
buildings along Olympic Boulevard. Each "good roof"
building owner is being contacted and informed of
available solar incentives and financing options.
Please stop by our office and view the Olympic
Corridor map up close (1212 Fifth Street, Ste 100; at
Wilshire & 5th).
If you too would like an assessment of your building's
solar potential, whether in the Corridor or not, contact
Solar Santa Monica for a free Solar Site Check.
|
| |
|
| |
| Homeowner Information Session |
| |
Solar Santa Monica and Southern California Edison
will co-host a 90-minute, non-technical, easy-to-
understand homeowner solar information session on
Saturday, May 30, 2009.
The session is FREE of charge, but due to limited
space, pre-registration is required. To register, call the
Solar Santa Monica office at (310) 458-4992 or call
SCE at (866) 970-9221.
Date: Saturday, May 30, 2009
Time: 10 a.m. - 12 p.m.
Location: Santa Monica Public Library,
Multi-Purpose Room, Second Floor
601 Santa Monica Boulevard, Santa Monica, CA 90401
Parking: Enter underground parking structure on 7th
Street
Event number (for SCE): 15-053009
|
| |
|
| |
| Feed-In Tariff Update |
| |
Feed-in tariffs represent an exciting new opportunity
for solar in California. The tariffs are sets of prices that
electric utilities are required to pay for power that
consumers "feed into" the grid.
The prices
per kWh make sense for investors, thus they are used
as a policy instrument to stimulate markets for solar
and other clean energy forms. The aim is to
accelerate the uptake of renewable energy and
catalyze the development of solar industries and
markets. Feed-in tariffs are working in Europe
(Germany and Spain in particular), recently taking
off in Gainesville, Florida, and so much so that they
are hard to ignore.
In fairness, California does have a feed-in tariff for
small renewable energy systems (up to 1.5 MW). Its
prices are based on utility avoided costs, and thus its
payments are too low to attract participants.
Solar Santa Monica's Advisory Board has put
this policy issue front and center: If the City of Santa
Monica is to reach its energy and greenhouse gas
emission reduction goals, solar must be a sound and
predictable investment for property owners, especially
apartment building owners. And this will require
leadership to invest in clean and green energy today,
and policies like feed-in tariffs to make it
happen.
Solar Santa Monica's Advisory Board has been
working with our elected officials here and in
Sacramento to advocate for the adoption of a solar
feed-in tariff for California that would provide a return
on
investment sufficient to amortize the cost of the
system and provide a reasonable return over 20
years. With less than 10,000 single family homes, and
40,000 apartments, California's net energy metering
requirements simply don't work. Going virtual only
complicates an already complex solar deal. A feed-in
tariff allows for a building owner to maximize solar on
the roof and to earn a return totally separate from the
building's power use. Feed-in tariffs increase the
value of all rooftops.
To make this new solar deal a reality, the Advisory
Board's FIT Subcommittee has drafted a bill that is
now in the form of SB 523, fostered thus far by Senator
Fran Pavley. It would provide for a solar feed-in tariff for
small systems in the urban environment, enabling
cities to take action to invest in a sustainable
infrastructure and to protect the climate.
Santa Monica is currently seeking support
from its "solar cities alliance," from a broad coalition of
advocates of clean, decentralized power for its
multiple benefits, and from labor, to promote a form of
power generation that puts power in the hands of the
people, creating tens of thousands of jobs throughout
our neighborhoods.
If you are interested in learning more about feed-in
tariffs please read a white paper on the subject by Solar Santa
Monica. Contact Susan
Munves with your questions and comments.
|
| |
|
| |
|