Answers
In a sunny location, sunlight has a power density of about 1 kW/m^2. Photovoltaic solar cells can convert this power into electricity with 14% efficiency. If a typical home uses 380 kWh of electricity per month, how many square meters of solar...
Let's say you have 1 square meter of panels. Then you get 8 hours x 1 kW/m^2 x .14 = 1.12 kWh of energy per day.
If you have 2 square meters, you get 2.24 kWh's per day.
If you have N square meters, it's 1.12N kWh's per
Visit www.NJRenewableEnergy.com Incentives, rebates and tax credits. No better time in the history of New Jersey to install PV solar on your home ...
Im thinking of buying a 1kw PV for the house. does anyone know (generally) how much these produce? is it upto 1kw per hour? or per Day.
someone i know says its 1 kw per day. that doesnt seem very useful in reducing power...
It's easy to mix the terms "kWh" and "kW" but it can confuse listeners. kW is power. If you expend a certain power, say 2000 watts (= 2kW) for an hour, you've spent 2kWh in energy. (You probably understand this; apologies as...
Just to make sure I understand this solar power thing:
1. Peak solar constant on the earth's surface = 1 kw/meter
2. Photovoltaic efficiency = 20%
3. Intermittency efficiency = 20%
(this is the...
The photovoltaic efficiency should be lower than 20% for a practical system. The most expensive widely-distributed cells, Sunpower, have an efficiency of maybe 22%. Put put them under glass in a practical frame, and it's down to 19%. These are...
A continuously operating FM radio transmitter with a power output of 1250 W at 99.7 MHz is to be installed in a remote location in South America. Solar power is considered as the most suitable source of power for this transmitter. The transmitter...
the first two are VERY easy.
i. 1250 * 2 = 2500 watts = 2.5 KW
ii. 1 KW + 2.5 KW = 3.5 KW
iii on your own for this one.
My roommates and I used 2256 kilowatt hours over the past 60 days. If we wanted to go completely solar, which i know would be costly, how many watts would the system have to provide? Would 1.56 kw of power do the trick?
just do the arithmetic. 1.56 kw * 8 hr/day * 60 days = 749 kwh
That will not do the trick.
power = 2256/(8*60) = 4.7 kw
In a sunny location, sunlight has a power density of about 1 kW/m2 . Photovoltaic solar cells can convert this power into electricity with 16% efficiency.
If a typical home uses 385 kW/m2 of electricity per month, how many square meters of...
about a million
SRP to cut rebates for solar panels
Salt River Project is cutting the amount of money it will pay customers who put solar panels on their roofs, saying the big subsidies are costing the utility too much.
The utility is following a similar move last week by Arizona Public Service Co.
SRP will now pay a maximum $10,750 solar rebate per house, down from $13,500.
Those who submit a signed contract to SRP before 5 p.m. today will get the higher rebate.
"I think we will get a surge (of applications) in the next 24 hours," said Lori Singleton, SRP's sustainable-initiatives manager. "What we expected if we continued (with the old rebate) was that we would spend a significant amount of our fiscal-year budget on solar."
THIN FLEXIBLE SOLAR PANELS by PowerFilm Inc. « 5
OwerFilm, Inc. is a developer and manufacturer of thin, flexible solar panels based on a proprietary low cost production process. The company’s objective is to target the building integrated solar power market and to continue to supply products for selected portable and remote solar power applications. PowerFilm is based in the state of Iowa in the U.S. PowerFilm was founded in 1988 by Dr. Frank Jeffrey and Dr. Derrick Grimmer, both former 3M research physicists, with a combined 65 years of experience in semiconductor and solar energy research and development. Since 1988, the company has focused on developing thin film solar panel technology and an industrial scale manufacturing process to produce low cost solar panels on a high volume basis. Elements of the company’s low cost technology and manufacturing process include the use of: a durable, flexible plastic substrate; roll-to-roll manufacturing to minimize handling costs; amorphous silicon to avoid dependence on the silicon wafer market cycle; and printed interconnection to automate the cell connection process.Having developed and commercialized an industrial scale production process for low cost thin, flexible solar panels, PowerFilm is in the process of expanding production capacity to meet the rapidly growing demand for solar panels. In addition to its solar panel products, PowerFilm has sought to leverage its core roll-to-roll manufacturing competence to develop additional thin film semiconductor devices. The company has formed a technology partnership with Hewlett Packard Corporation, one of the world’s leading technology companies, for the development of flexible, low cost backplane drivers for next generation flat panel displays. This development program has been funded by the U.S. Display Consortium. While this project is still in the research and development phase, it may enable the company to play a significant role in the future market for flat panel display technology. Future applications for PowerFilm’s thin film semiconductor know-how could also include RFID tags and electronic paper. PowerFilm® solar panels currently are integrated into commercial products for portable and remote power applications. PowerFilm Solar sells its own line of PowerFilm Rollable and Foldable Solar Chargers to recharge batteries and power consumer electronics. The company also sells PowerFilm solar modules that are integrated into the finished products of other companies.The company is in the advanced stage of development of PowerFilm solar panels integrated with metal roofing, membrane roofing, and architectural fabric. Building integrated solar electric power, sometimes called building integrated photovoltaics (BIPV), is the combination of thin and flexible solar panels with standard building materials such as standing seam metal roofing, single-ply elastomeric membrane roofing, or architectural fabric. Thin and flexible PowerFilm solar panels have an attractive design and can be installed in a low-cost manner. This makes these solar panels especially well suited for building integrated applications. PowerFilm’s initial building integrated solar power application is solar field shelters it has developed for the US Army, with its field shelter partner Johnson Outdoors/Eureka Tents. Shipments of solar field shelters to the US Army began in 2005. PowerFilm is in the advanced stages of development of its 20-year lifetime building integrated solar panels for integration with metal roofing, membrane roofing, and architectural fabric. The company has completed a 10-kilowatt demonstration and evaluation project on metal roofing. PowerFilm is integrated with standing seam metal roofing and is conformable to a variety of architectural styles. The low profile and flexibility of PowerFilm enables it to be incorporated with innovative straight or curved architectural structures. PowerFilm not only provides power but also enhances the overall building design.
...News
SRP to cut rebates for solar panelsArizona Republic - Apr 09, 2010
It will rise to about $4.05 a month per household customer May 1. Some officials said that the subsidies were artificially propping up the cost of solarIntelligent Energy Portal (blog) - Apr 08, 2010
Tier 1 is about $.12 per kilowatt-hour (nice!). That's strong incentive to turn off the lights and air conditioner, install some rooftop solar,RenewableEnergyWorld.com (blog) - Apr 08, 2010
An FiT awards the owner of a solar system a per-kilowatt-hour payment (tariff) for all the electricity the system feeds into the city's grid.istockAnalyst.com (press release) - Apr 08, 2010
The solar panel, the second of two donated by the Andover Fund for Education, will power overhead lights in the engineering classroom. For years to come,GetSolar.com (blog) - Apr 06, 2010
The press release offers the following details: ”With these new installations online, BJ's will have more than 2000 kW of solar power attributing to its