Prikazani su postovi s oznakom CCRES - SOLAR ENERGY. Prikaži sve postove
Prikazani su postovi s oznakom CCRES - SOLAR ENERGY. Prikaži sve postove

četvrtak, 16. svibnja 2013.

JCM Capital

www.jcmcapital.ca

JCM Capital to Fund Solar PV Project Development in Japan

  Toronto, Ontario, Zagreb - May 2013 - JCM Capital (JCM) announced that it has set up a company in Japan to invest in utility-scale ground based solar photovoltaic (PV) projects. The company will focus on projects 10MW and larger, and will be actively seeking partners to develop project sites of 40 hectares and larger. JCM will co-develop and fund project costs through to the construction-ready stage and rely on its construction and long term financing partners to build, finance and operate the projects.

JCM investments will be used for project specific development costs such as land acquisition, engineering, legal negotiations and hard costs for the local development team. JCM will fund a project as long as there is a clear path to obtain all necessary permitting including a power purchase agreement, interconnection agreement, environmental approvals and land control.

JCM’s CFO, Mr. Martin Ritchie, comments that, “this expansion into Japan is a key part of our corporate strategy to grow our business internationally.  We anticipate that Japan will continue to have explosive growth potential considering the great demand for energy, strong political will and the well-designed Feed- in-Tariff (FIT) program.”

JCM has a current target to fund and develop an initial 100MW of projects in Japan. Christian Wray, JCM’s CEO, comments, “JCM has the necessary capital and solar PV expertise to complement our local partners’ market knowledge and project management capabilities.”

Through this company, JCM hopes to facilitate sustainable development of energy sources in an environmentally responsible way, and bring more clean electricity to Japan.
 
About JCM Capital
JCM Capital focuses on financing and the co-development of solar energy projects. The Company provides development capital for early-stage to construction-ready solar PV projects while offering strategic and project management support. Current portfolios include commercial rooftop and utility-scale ground-mounted projects in North and South America, Africa and Japan.  The Company is looking to expand its reach through the cultivation of new partnerships and associations in emerging solar markets.


Global Head Office

21 St. Clair Avenue East,
Suite 500,
Toronto Ontario, Canada
M4T 1L9
Tel: 647-447-1662 info@jcmcapital.ca

 More info:

Croatian Center of Renewable Energy Sources (CCRES)

srijeda, 30. siječnja 2013.

News and Events by CCRES January 30, 2013

 

 

CROATIAN CENTER of RENEWABLE ENERGY SOURCES (CCRES)

News and Events January 30, 2013

Energy Department Offers $12 Million to Accelerate Solar Cell Efficiency

 

The Energy Department on January 25 announced a new $12 million funding opportunity to develop innovative, ultra-efficient solar devices that will help close the gap with the theoretical efficiency limit. That limit is defined as the highest potential percentage of sunlight that can be converted directly into electricity. Currently, a sizable gap still exists between the efficiency of laboratory and commercial-scale solar photovoltaic (PV) cells and the predicted maximum efficiencies of different solar cell materials. Accelerating breakthroughs in solar cell conversion efficiency will help continue to lower the overall cost of solar power.
The new initiative—the Foundational Program to Advance Cell Efficiency II (FPACE II)—aims to accelerate record-breaking conversion efficiencies that will close the gap with this theoretical limit for a variety of PV cells, including silicon-based technologies and thin-film materials such as cadmium telluride and copper indium gallium diselenide. The new funding opportunity builds on the SunShot Initiative's FPACE I projects, awarded in September 2011, which are aimed at eliminating the gap between the efficiencies of best prototype cells achieved in the laboratory and the efficiencies of typical cells produced on manufacturing lines.
In the current solicitation, FPACE II seeks proposals from collaborative teams of researchers from national laboratories, universities, and industry that can develop materials model systems and fabricate prototype devices that achieve efficiencies near the theoretical limit. See the Energy Department Progress Alert and the Funding Opportunity Announcement.
 

Biodiesel Production Tops 1 Billion Gallons in 2012

 

The U.S. biodiesel industry broke the billion-gallon mark in 2012 for the second consecutive year, according to year-end production figures from the U.S. Environmental Protection Agency (EPA). The National Biodiesel Board (NBB) noted that the total volume of nearly 1.1 billion gallons exceeded the 2011 production by 6 million gallons.
December production totaled just 59 million gallons, the lowest monthly volume of the year. The National Biodiesel Board attributed the production drop to uncertainty over the biodiesel tax incentive. Congress renewed the $1-per-gallon incentive on New Year's Day as part of the so-called "fiscal cliff" legislation. Biodiesel production is reported under the EPA's Biomass-based Diesel category in the Renewable Fuel Standard (RFS). The fuel is made from a mix of resources, such as recycled cooking oil, soybean oil, and animal fats. See the NBB press release and the EPA's RFS Web page.
 

DOI Finalizes Arizona Renewable Energy Zone Plan

 

The U.S. Department of the Interior (DOI) on January 18 announced that it has designated 192,100 acres of public land across Arizona as potentially suitable for utility-scale solar and wind energy development. The publication of the Record of Decision for this initiative, known as the Restoration Design Energy Project, caps a three-year, statewide environmental analysis of disturbed land and other areas that could accommodate commercial renewable energy projects. The DOI's Bureau of Land Management (BLM) eliminated from consideration lands in Arizona containing sensitive resources requiring protection, such as endangered or threatened wildlife and sites of cultural and historic importance. The plan does not eliminate the need for further environmental review of individual sites.
The Record of Decision also establishes the third solar zone on public lands in Arizona and the eighteenth nationwide: the new 2,550-acre Agua Caliente Solar Energy Zone is located in Yuma County near Dateland, and the BLM estimates that the zone could generate more than 20 megawatts through utility-scale solar projects. The Solar Energy Zones are part of the Obama Administration's efforts to facilitate solar energy development by identifying areas in six states in the West with high solar potential, few resource conflicts, and access to existing or planned transmission. Arizona, California, Colorado, Nevada, New Mexico, and Utah are included in the zones. See the Interior Department press release and the BLM's Record of Decision.
 

Hybrid Tops Annual "Greenest" Vehicle List

 

The Toyota Prius C topped the American Council for an Energy-Efficient Economy's (ACEEE) fifteenth annual "Greenest" car ratings in a list released on January 16. The compact, which debuted in the U.S. market last year, had a "Green Score" of 58 in the ACEEE measure of comprehensive eco-performance, which reflects the vehicle's rating of 53 miles per gallon (MPG) in the city and 46 MPG highway. Overall, the list was dominated by hybrid-electric vehicles, plug-in hybrids, and electric vehicles (EV).
Rounding out the top five were the Honda FIT, Prius 1.8 liter, Prius plug-in hybrid, and the Honda Civic hybrid. The Ford Focus with a lithium-ion battery ranked tenth. The Scion IQ and the Mercedes-Benz Smart ForTwo coupe were the only non-hybrid, non-plug-in vehicles on the list.
Fuel economy for EVs is provided in miles per kilowatt-hour, while the rating for plug-in hybrids is provided in MPG for gasoline operation and in miles per kilowatt-hour for electric operation. ACEEE is a nonprofit organization that acts as a catalyst to advance energy efficiency policies, programs, technologies, investments, and behaviors. See the ACEEE press releasePDF and the full "Greenest" car list.
 

CROATIAN CENTER of RENEWABLE ENERGY SOURCES (CCRES)

  special thanks to U.S. Department of Energy | USA.gov

Keeping America Competitive: Bringing Down the Cost of Small Wind Turbines

How do we stay competitive in the global wind energy market? A key component is continued leadership in manufacturing small wind turbines—those rated at 100 kilowatts or less.
Historically, the United States has been the leading manufacturer of small wind turbines, helping to boost economic growth and create job opportunities. U.S. small wind manufacturers report using 80-85 percent domestic content in their turbines, and the small wind industry represents an estimated 1,600 American jobs. Still, in the increasingly competitive global wind market—our continued leadership in this field is far from guaranteed.
To help U.S. small turbine manufacturers maintain their leading international market position, we’re investing in two projects—led by Maine's Pika Energy and Oklahoma's Bergey Windpower Company—as part of the Energy Department's Small Wind Turbine Competitiveness Improvement Project. This initiative supports manufacturers in their efforts to lower the cost of energy from small turbines by improving their components and upgrading their manufacturing processes. To read the complete story, see the Energy Blog.

CROATIAN CENTER of RENEWABLE ENERGY SOURCES (CCRES)

srijeda, 19. prosinca 2012.

PV America 2013 East

PV America East. February 5-7, 2013. Pennsylvania Convention Center. Philadelphia, PA.
 
 
Share:
Facebook Twitter LinkedIn Email
 
 
Croatian Center of Renewable Energy Sources promotes
One good solution is worth the trip.
You know there’s great opportunity in PV. But what are the most successful installers, contractors, manufacturers, engineers and other businesspeople doing to leverage it? Find out at PV America 2013 East.
Solution-sharing is at the heart of the PV America conference program. In Concurrent Sessions, experts give you their best strategies and the latest information. In Solar Idea Swaps, the experts facilitate lively discussions among peers. And afterward, presenters are available to continue the conversations in Solar Central.
Don’t miss this Concurrent Session followed by Continuing the Conversation in Solar Central, booth #311:
Enticing New Investors to the Solar Industry
Wednesday, Feb. 6, 1:00 pm – 2:30 pm
With so many conversations focused around the challenges you are facing in your business, you can bet you’ll go home from PV America with valuable ideas to implement. Ideas that will make the difference for your business.
Digital Conference Brochure
PV America is produced by SEIA and SEPA. Unlike other solar conferences, all proceeds from PV America support the expansion of the U.S. PV solar energy market through both associations’ year-round research and education activities, and through SEIA’s advocacy, research and communications efforts.

Follow us on:
Facebook Twitter LinkedIn
 
 

nedjelja, 26. kolovoza 2012.

Transparent Solar Panels


 Ideal for skylights, patio and deck covers.
 
 Anyplace you would like to let some light through the panels.
These panels can be integrated into a building so that they capture sunlight for electricity, but still allow about 15% of the light through.  
This provides good ambient lighting while providing some cooling by shade. 
 
 These can be added on to existing or new construction, but often are best when designed in from the start of new construction.
 
People who watch what their neighbors are doing may soon find themselves looking right through an energy-producing transparent glass solar panel, if the folks at the National Renewable Energy Laboratory are on the right track.
 
 The lab has produced a transparent photovoltaic module that is 14 times bigger than its last attempt.
Researchers are working to capture the sun's rays more efficiently and turn them into electricity, using a see-through solar panel no thicker than a plastic grocery bag.
 

CROATIAN CENTER of RENEWABLE ENERGY SOURCES (CCRES)

subota, 25. kolovoza 2012.

Photovoltaic Solar Energy


You've seen the panels on rooftops and mirrors in the desert. But how much do you really know about the technology needed to capture the tremendous power of the sun?
  1. What is photovoltaic solar energy?

    ‘Photovoltaic’ is an amalgam made of two words: photo - photon which means ‘light’ and voltaic from Volt which is the unit used to measure electric potential at a given point.
    Photovoltaic systems use cells to convert sunlight into electricity. PV cells can be made from various so-called semiconductor materials. Today, silicon is the most widely used material, but other, usually compound (made from two or more elements) semiconductors are also used. PV cells are silent and non-polluting and utilize a source of energy that is practically inexhaustible.
  2. What difference is there between thermal solar energy and photovoltaic solar energy?

    A photovoltaic solar energy system converts sunlight directly into electric power to run lighting or electric appliances. A photovoltaic system requires only daylight (indirect sunlight) to generate electricity.
    The solar thermal energy system converts direct sunlight into heat. This thermal energy can be used to heat water or air in buildings and in many other applications.
    Both technologies use the irradiance of the sun even if they are quite different.
     
  3. What is a photovoltaic (PV) system?

    A photovoltaic (PV) system is a system that uses solar cells to convert light into electricity.
    A PV system consists of multiple components, including cells, electrical connections, mountings and means that regulate and/or modify the electrical output. Due to the low voltage of an individual solar cell (typically ca. 0.5V), several cells need to be combined into photovoltaic modules which are then connected together in an array.
    PV systems can be used for homes, offices, public buildings or remote sites where grid connection is either unavailable or too expensive. PV systems can be mounted on roofs, integrated in building façades or operate as stand-alone systems. The innovative PV array technology and mounting systems mean that PV can be retrofitted on existing roofs or easily incorporated as part of the building envelope at the construction stage. Modern PV technology has advanced rapidly and PV is no longer restricted to square and flat panel arrays but can be curved, flexible and shaped according to the building design.
    Photovoltaic cells are equally used in many daily electrical appliances, including watches, calculators, toys, battery chargers, professional sun roofs for automobiles. Other applications include power for services such as water sprinklers, road signs, traffic signals, remote lighting and security phones.
    PV systems can be either grid connected or off-grid.
    “Grid connected” means that the system is connected to the electricity grid. Connection to the local electricity network allows any excess power produced to feed into the electricity grid and to sell it to the utility, depending on local feed-in regulations.
    Such a PV system is designed to meet all or a portion of the daily energy needs. Typical on-grid applications are roof top systems on private houses.
    The diagram shows how electricity generated by solar cells in roof-mounted PV modules is transformed by an inverter into AC power suitable for export to the grid network. The owner then has two options: either to sell all the output to the local power utility (if a FiT is available) or to use the solar electricity to meet demand in the house itself, and sell any surplus to the utility.
    “Off-grid systems” have no connection to an electricity grid. Off-grid systems are contributing to rural electrification in many developing countries. PV is also used for many industrial applications where grid connection is not possible e.g. telecommunications, especially to link remote rural areas to the rest of the country.
  4. What is a PV system composed of?

    Elements of a grid-connected PV system are: PV modules - converting sunlight into electric power, an inverter that converts direct current into alternating current, sub-construction -consisting of the mounting system, cabling and components used for electrical protection and a meter to record the amount of electric energy fed into the grid.
    Off-grid (stand-alone) systems on the other hand, use a charge controller to charge a storage battery used for providing the electric energy when there is no sunlight, e.g. during night hours.
  5. What is an inverter?

    Solar cells produce direct current (DC). However, most of the electrical devices we commonly use work with a standard alternating current (AC) power supply. An inverter converts the DC from the solar cells into a useable form of AC.
    An inverter is moreover necessary to connect a PV system to the grid.
  6. What is net metering?

    Under a self consumption scheme, the consumer primarily uses the electricity generated by his PV system in his own home or office and sends any surplus energy to the utility grid for use by others.
    A bidirectional meter counts both the outgoing and the incoming energy flow. If the home or office requires more or less electricity than can be produced by the PV system, the balance is provided by the grid or the excess electricity is sold to the grid.
    With a net metering scheme, the utility company only charges the difference between the consumed energy and the produced surplus energy. In some countries, the surplus energy remains available for consumption for a limited amount of time and cannot be sold (you can’t have a ‘negative’ energy bill).
    In many countries the utility company purchases all PV electricity generated at a higher rate (FiT) than the tariff applied for consumed electricity. In this case, a dedicated metering exists for ‘PV generation’ and a second metering for ‘power taken from the grid’, applying a different tariff to each.
  7. What is the Feed-in Tariff (FIT) and how does it work?

    Utility companies are legally obliged to buy electricity from renewable energy producers at a premium rate, usually over a guaranteed period, ensuring a reasonable rate of return for the producer. The extra cost is shared among all energy users, thereby reducing it to a barely noticeable level. In addition, FiTs often include ‘tariff degression’, a mechanism according to which the price (or tariff) ratchets down over time.
    FiTs have been empirically proven to generate the fastest, lowest-cost deployment of renewable energy. This way PV significantly contributes to combating climate change securing energy supply, not to mention creating jobs and competitiveness.

    The FiT system means that the pay-back time for PV is reduced significantly. Germany has a good example of a FiT in place, and the country is world leader in installed PV power.
    This financing model has now been taken up widely around the world, as the table below shows:

    Countries, states and provinces that have adopted FITs
    Year Cumulative number Countries/states/provinces added that year
    1978
    1
    United States
    1990
    2
    Germany
    1991
    3
    Switzerland
    1992
    4
    Italy
    1993
    3
    Denmark, India
    1994
    8
    Spain
    1997
    9
    Sri Lanka
    1998
    10
    Sweden
    1999
    13
    Portugal, Norway, Slovenia
    2000
    14
    Thailand
    2001
    16
    France, Latvia
    2002
    20
    Austria, Brazil, Czech Republic, Indonesia, Lithuania
    2003
    27
    Cyprus, Estonia, Hungary, Korea, Slovak Republic, Maharashtra, (India)
    2004
    33
    Italy, Israel, Nicaragua, Prince Edward Island (Canada), Andhra, Pradesh and Madhya Pradesh (India)
    2005
    40
    Turkey, Washington (US), Ireland, China, India, (Karnataka, Uttaranchal, Uttar Pradesh)
    2006
    41
    Ontario (Canada)
    2007
    56
    South Australia (Australia), Albania, Bulgaria, Croatia, Dominican Republic, Finland, Macedonia, Moldova, Mongolia, Uganda
    2008
    69
    Queensland (Australia); California (USA); Chattisgarh, Gujarat, Haryana, Punjab, Rajasthan, Tamil Nadu, and West Bengal (India); Kenya; the Philippines; Tanzania; Ukraine
    2009
    80
    Australian Capital Territory, New South Wales and Victoria (Australia); Hawaii, Oregon, and Vermont (USA); Japan; Kazakhstan; Serbia; South Africa; Taiwan
    2010
    84
    Bosnia and Herzegovina, Malaysia, Malta, United Kingdom
    Source: REN21, 2011FiTs can be shaped according to a country’s RE resources, its electricity distribution system and its RE targets.
  8. Does PV technology need bright sunshine to work properly?

    A PV system needs daylight but not direct sunlight to work properly, however the power output is smaller. In fact, if a PV module is exposed to an artificial light source, it will also produce electricity.
    The light of the sun consists of both direct and indirect or diffuse light (which is the light that has been scattered by dust and water particles in the atmosphere). PV cells not only use the direct component of the light, but also produce electricity when the sky is overcast. It is a common misconception that PV only operates in direct sunshine and is therefore not suitable for use in temperate climates. This is incorrect: PV makes use of diffuse solar radiation as well as direct sunlight.

    The amount of useful electricity generated by a PV module is proportional to the intensity of light energy that falls onto the conversion area. The greater the available solar resource, the higher the electricity generation potential.
    Because the electrical output of a PV module is dependent on the light intensity to which it is exposed, it is certain that PV modules will tend to generate more electricity on bright days than when skies are overcast. Nevertheless, PV systems do not need direct sunlight to work, so even on overcast days a PV module will generate some electricity.
  9. How much electricity can a PV system produce?

    The electricity production of a PV system depends on external (environmental conditions) and internal (technology, layout of the system) parameters.
    The production of a PV system depends on:
    • The power of the PV system
    • Orientation towards the sun
    • Geographic location
    • The tilt angle or inclination of the roof. For European countries, the average optimal inclination is 30°-35°
    • The irradiance (light intensity) value on site
    • The climate zone
    • The way how BIPV is structurally integrated in the building shell (ventilated/ non-ventilated)
    Shadows on the modules (even if they appear only at certain times of day) can reduce the gain of the whole system and should be avoided if possible.
    The map below represents the yearly sum of irradiation (‘raw’ solar energy) on a horizontal surface.
    Alternatively, the maps represent solar electricity (kWh) generated by a 1kWp system per year with horizontal (or inclined) modules.
  10. What does grid parity mean?

    In light of decreasing solar electricity generation costs and increasing price for conventional electricity, solar power systems will equally become increasingly economic during the coming years. Over the next 10 years solar electricity will become cheaper than retail electricity (depending on location and electricity prices) for end electricity consumers.
    A considerable advantage of solar electricity is that it is mainly produced around midday when conventional electricity is particularly expensive. Solar electricity largely replaces expensive peak-load electricity at preferential customer prices, which is why it would be wrong to compare it with cheap base-load electricity.

    Grid parity (competitiveness with retail electricity prices) will be reached progressively from 2013 onwards in several European markets. Countries with the highest solar irradiation and higher electricity prices, such as Italy and Spain, have the potential to reach grid parity starting in 2013 and 2015 respectively. Grid parity is likely to be reached in Germany and France in 2015 as well and cover progressively most other EU countries up until 2020.

    Grid parity is defined as the moment at which, in a particular market segment in a specific country, the net earnings  of the electricity supply from a PV installation is equal to the long-term cost of receiving traditionally produced and supplied power over the grid. In other words, Grid parity is the moment at which it is equivalently profitable for an end consumer to buy a PV System and produce his own electricity without any direct incentives (FIT or net metering) than buying electricity from the grid over 25 years.
  11. Do PV modules lose efficiency each year?

    The degeneration of PV modules varies according to the type of PV modules installed. The loss of power production during a life cycle of 20 to 25 years is estimated to be 10 to 20% for crystalline PV modules.
  12. What is the carbon footprint of a PV system?

    When measuring the environmental impact of a product, it is important to take the direct and indirect impacts throughout the entire product life-cycle, from material sourcing, through manufacturing, transportation, construction, operation, dismantling and to product collection and recycling into account.
    PV systems have a very light carbon footprint; they have no direct CO2 emissions into air during operation. Small, indirect emissions are mainly linked to the energy required during the manufacturing process of the PV module. This depends on the amount of energy consumed during manufacturing and on the electricity mix (i.e. gas, fuel, nuclear, hydro) at the production sites. Other small indirect emissions are connected to the technical greenhouse gases used as process gases when manufacturing the PV module, its components or the manufacturing equipment.
    The carbon footprint (g CO2eq/kWh) will depend on the lifetime and the conversion efficiency of the PV system, the system design and its orientation, in addition to the solar irradiation where the relevant system is installed. Annual solar horizontal irradiation varies from approximately 800 kWh/m2 in Northern Germany to approximately 1700 kWh/m2 in Southern Italy and even up to 2500 kWh/m² (II) in the “Sunbelt area” resulting in higher electricity output for the same initial carbon input.
    The carbon footprint of PV systems - assuming a location in southern Europe - ranges from 16 to 32 gCO2 eq. per kWh compared to between 300 and 1000 g CO2 eq. per kWh when produced from fossil fuels.
  13. Is it worthwhile using solar energy in Europe?

    Definitely! In Germany, for example, the average of the annual solar irradiation is 1000 kWh per square meter. With efficient solar power systems, this is sufficient to generate a considerable volume of electricity and heat from solar power.
    Unlike other electricity generation technologies, solar is a highly modular electricity generating technology, scalable to powers suited for a single household up to large-scale ground-mounted installations.

    Small-scale PV electricity in central Europe is up to twice as costly as large-scale PV electricity in southern Europe due to the combined benefits of economies of scale of large systems and higher irradiation in the South. Nevertheless, small-scale domestic 'northern' PV is today as cost-effective as large-scale 'southern' PV when incorporating the cost to deliver it to the domestic consumer.

    PV will become soon a competitive solution where it is needed (i.e where electricity is consumed).

    Hence it is worthwhile producing solar energy in Europe, not least because this makes Europe less dependent on energy imports but also because:
    • The fuel is free
    • It produces no noise, harmful emissions or polluting gases
    • PV systems are very safe and highly reliable
    • It brings electricity to remote rural areas
    • The energy pay-back time of a module is constantly decreasing
    • It creates thousands of jobs
    • It contributes to improving the security of Europe’s energy supply
  14. Can renewable energy sources guarantee a secure power supply despite their dependence on the weather?

    Can renewable energy sources guarantee a secure energy supply despite their dependence on the weather?
    The best way forward to ensure a secure energy supply for the future is an energy mix of renewable energy sources and intelligent load management (smart grids) in combination with energy storage. This will enable renewable energy sources to ensure a secure, climate-friendly and sustainable energy supply.

    Solar power is particularly available during periods of peak load demand (midday and in summer) and is excellently complemented by wind power, where peak values are principally reached in winter. Further to this, biomass, hydropower and geothermal energy are continually available and counterbalance deficits.
  15. What is the lifetime of a PV system?

    The estimated lifetime of a PV module is 30 years. Furthermore, the modules’ performance is very high providing over 80% of the initial power after 25 years which makes photovoltaic a very reliable technology in the long term.
    Most manufacturers in general propose performance guarantees on the modules after 20 years of 80% of the initial output power. As regards the electronic components and accessories (inverters), the guarantee usually does not exceed 10 years.
    But this doesn’t mean that PV systems do not produce energy after 20 – 25 years.
    Most PV systems installed more than 25 years ago still produce energy today!
  16. What if there is a problem with the PV system?

    If a PV module has a defect, no longer produces electricity or produces much less electricity than before, it is generally covered by the manufacturer’s performance guarantee against a drop in efficiency of more than 20%.
    Most manufacturers indeed propose performance guarantees on modules of 20 and 25 years for 80% of the initial output power. On the electronic components and accessories (inverters), the guarantee usually does not exceed 10 years, although longer inverter insurances can be arranged.
  17. Is solar energy more expensive than conventional energy?

    In the light of decreasing solar power generation costs and increasing costs for conventional electricity (due to oil and gas prices), solar power systems will become increasingly economic during the coming years.
    A considerable advantage of solar power is that it is mainly produced during the day when the demand is high and therefore conventional electricity is particularly expensive. Another important feature is that PV is normally produced close to demand; therefore, a high investment on extending the electricity infrastructure is not required.
    In the long term solar energy will be much cheaper than conventional energy. Nowadays, like all energy production technologies (coal, gas, nuclear etc.) in the past and present, solar energy still needs financial support to further develop the technology and thus reduce prices to become competitive.
    However, solar energy is already well on the way: whereas the costs for conventionally generated energy have constantly increased in recent years and – faced with finite resources – will continue to increase by a considerable extent, increasing mass production has enabled the cost of solar energy to drop by an average of more than 10% per year.
  18. What contribution can solar electricity play world-wide with regard to total energy consumption?

    The solar PV market has been booming over the last years despite a dip in 2009. By the end of 2010 the global cumulative capacity was about 69.4 GWp, with 29.4 GWp added just in 2011.
    In the long term it is estimated that solar power could contribute to an increasing share of total energy consumption. With appropriate policies both in developed and developing countries, the European Photovoltaic Industry Association (EPIA) and Greenpeace have devised that in a joint scenario photovoltaic systems could produce enough energy to supply electricity to 3.7 million people globally by 2030.
    The Solar Generation report published by Greenpeace and EPIA in February 2011 concludes that solar electricity can contribute largely to the energy needs of two-thirds of the world’s population - including those in remote areas - by 2030.
    The report confirms the impressive growth of the solar energy sector and demonstrates its potential of becoming a global energy contributor. It estimates that over 1800 GW of photovoltaic systems will have been installed worldwide by 2030, which represents over 2600 TWh of electricity produced per year or 14% of global electricity demand.
    In theory, every country could provide for its own energy needs from local renewable energy sources many times over.
  19. Can the solar industry also grow without government subsidies?

    Public incentives will no longer be required to help the development of energy produced by photovoltaic means in the long run/
    The solar industry will be capable of generating a high degree of growth without government subsidies in the foreseeable future.
    With increasing sales leading to economies of scale and efforts realized by producers to reduce the cost of photovoltaic products, it is expected that costs for photovoltaic energy will be competitive with electricity prices in southern Europe by 2015 and in most of Europe by 2020.
    Until then, the market introduction of solar energy is dependent on statutory frameworks if it is to become competitive and survive in the global market. The industry will require investment security for developing solar power manufacturing plants and for their high development input and, until then, consumers will require legally secure incentives to invest in installing solar systems. The cost reduction can be achieved through research development and large-scale implementation with cost-effective financing instruments.
  20. What are Green Certificates?

    Green Certificate, also known as Renewable Energy Certificate (REC), is a tradable commodity certifying that a certain amount of electricity (normally sold to the customer) is generated using renewable energy sources. The following sources are considered as renewable: wind, solar, wave, tidal, geothermal, hydro and biomass Typically, one certificate represents the generation of 1 MWh of electric energy.
    Green Certificates represent the environmental value of the renewable energy generated. The certificates can be traded separately from the energy produced. Several countries use Green Certificates as a means to bring the support of green electricity generation closer to market economy instead of more bureaucratic investment support and FiTs. Such national trading schemes are in use for PV in e.g. Poland, Sweden, Belgium (Wallonia and Flanders), and some US states.
    In practice, producers, wholesalers, retailers or consumers (depending on who is obliged) can be obliged to supply or consume a certain percentage from renewable electricity sources. For each unit of renewable electricity (e.g. MWh), a certificate is granted to the producer.
    This certificate serves as proof that renewable electricity was delivered into the grid.
    The graph below shows the costs per MWh versus the certificate value. Some technologies will be excluded from a Green Certificate market, while mature technologies are stimulated (only fictitious values are used to show the impact).
    Unlike the FiT, specific for each technology, a Green Certificate has no technology-specific price.
    Instead of compensating specific generation costs of the technology, a number of technologies will generate windfall profits, meaning that the compensation is higher than their actual generation costs.
  21. How long will the development of PV depend on FiTs?

    The major challenge for the renewable energy industry in general has been to make the cost of clean energy competitive with conventional energy. Householders or energy companies who wanted to install wind turbines or solar panels have been faced with lengthy pay-back times.
    Without increased consumer demand and political measures to facilitate access to the market, manufacturers of solar photovoltaic (PV) panels cannot produce the unit volumes that would be needed to bring prices down and drive technological innovation.
    The FiT has proven to be the most effective policy instrument in overcoming these barriers.
    The FiT allows the pay-back time for PV to be only years instead of decades (see also Q.7).
    In 2011, the majority of installed PV systems benefited from well-designed grant support, in particular the FiT mechanism. This provides fair remuneration to the investor and rewards the effort made in investing in a clean energy source. Solar energy is becoming more economically viable and should become cost-competitive with conventional energy by 2015 in southern European countries and by 2020 across most of Europe.
    Increasing customer’s demand and costs for conventional electricity, together with decreasing installation costs will make solar power systems increasingly economic during the coming years. During the next 5-10 years solar power will become cheaper (depending on location and electricity prices) for private households than conventional electricity. Thus solar power will become independent of subsidies much earlier than might be deemed at first glance.
    With stand-alone systems remote from the electricity grid, it is already worthwhile using solar technology today.
    The Renewable Energy Sources Directive reinforces the current legal framework and could facilitate the implementation of the FiT schemes throughout Europe.
    CCRES special thanks to
     European Photovoltaic Technology Platform http://www.eupvplatform.org
    Croatian Center of Renewable Energy Sources (CCRES)

subota, 5. svibnja 2012.

CCRES - SOLAR ENERGY




CROATIAN CENTER of RENEWABLE ENERGY SOURCES 
(CCRES)
  Solar Energy 

Sun has been producing energy in the form of radiations since billions of years without taking any rest. The energy obtained from radiations of the sun is called as solar energy. We know plants absorb energy from the sun by the process called photosynthesis. The humans beings and animals eat plants, thus directly or indirectly all the plants, animals and human beings are dependent on the sun. Human beings have learned to extract the energy from solar radiations and use it for various purposes.

Solar energy can be converted into heat and electricity. The British astronomer John Herschel is considered to be the first person in modern days to utilize solar energy. In the period of 1830s, on his expedition to Africa, he used solar energy to cook food. Since then there have been lots of developments in the field of solar energy.

The importance of solar energy has been understood since ages. Considering the fact that human life is crucially dependent on the energy emitted by sun, sun is considered to be the God in many religions. In Hindu mythology Sun God is considered to be the sources of energy and wisdom, which is always on the move to spread its energies and knowledge. The main deity in Egyptian mythology is sun god named Ra, who was also the first king. In Greek mythology, Helios is considered to be the sun god, who moves on the chariot throughout the world to illuminate it and spread the knowledge. Sun is also important part of many other mythologies and religions.

In which Places is Solar Energy most abundant?

Solar energy is the most promising energy with the potential for meeting all our future energy requirements. The main benefit of the solar energy is that it is available in all parts of the world. The quantity of solar energy is so huge that it is capable of providing many times the energy currently demanded throughout the world. Solar energy is being used for number of applications in countries like US, China, India, and many others.

The only problem with solar energy is that it is not available uniformly during all the hours of the day and all the days of the year. However, when supplemented with the other energies like thermal, and hydroelectric, solar energy can effectively meet our long-term requirements with little dependence on fossil fuels.

Applications of Solar Energy

Some of the common applications of solar energy are:

1) Solar water heaters: The solar water heaters comprise of the solar collectors that absorb solar energy which is use to heat water. The hot water can be used for various domestic and industrial purposes, in bathrooms, homes and swimming pools.

2) Producing heating effect: The solar energy can also be used for heating of the rooms during winter seasons.

3) Cooking food: Cooking food is one of earliest applications of the solar energy. Solar cookers are available in different shapes and sizes with different types of solar collectors. The most commonly used type of solar cooker consists of box inside which the raw food to be cooked it kept. At the top there is a reflective mirror on which the solar rays are directed. The solar rays get reflected on the utensil in which the food is kept. Due to concentrated solar rays, the food gets heated and cooked.

4) Photovoltaic (PV) cells: PV cells are the devices that convert solar energy directly into electricity, which can be used for running of number of appliances like calculators, mobiles, lanterns, street lights etc. The electricity generated from the PV cells can be stored in battery, which can be utilized for lighting the home and also running the cars. In the solar power plants large numbers of solar panels are spread over big area spread across several acres. The solar energy collected by the panels is transmitted to the PV cells that convert it into electricity.

5) Solar thermal power plants: The working of solar power plants is similar to thermal power plants. In these plants instead of coal, solar energy is used to convert water into steam, which drives the turbines that eventually produce electricity. At the end of 2008 there were nine solar thermal power plants operating in US.

Benefits and Limitations of Solar Energy

There are number of benefits of solar energy including:

1) Solar energy is available abundantly and free of cost in many parts of the world.

2) Solar energy is considered to be clean and green energy since it does not produce any environmental pollution like carbon dioxide and greenhouse gases.

3) The equipment required to collect solar energy can be kept at suitable locations in the campus of the building without affecting its aesthetics or surrounding atmosphere.

However, there are some limitations to solar power most notably:

1) The solar energy is not available in uniform quantity. The intensity of solar radiations changes during different hours of day and various days of the year, different climatic conditions and at different locations of the place. At times large amount of energy may be available, but at other times the available energy may be insufficient to meet the demands.

2) Large solar collectors are required to collect the solar energy of required quantity, which occupy large space inside the building.
CCRES 
special thanks to   
Escapeartist, Inc
 CROATIAN CENTER of RENEWABLE ENERGY SOURCES 
(CCRES)