Archive for September, 2010

Forget serpentine roads. Air lift the turbines

For a recent project in Italy, Erickson Aircranes worked with Vestas to design a blade carrier. The long line is necessary to keep the helicopter’s rotor wash from negatively affecting the blade and its placement on site.

New roads leading to wind-turbines sites are one of the biggest cost items for wind-farm owners. Tower sections and long turbine blades, more than 120 ft in some cases, require large-radii turns in roads so trucks carrying the huge parts can make the journey. But the real estate is not always available. Pilots on the construction staff at Erickson Air-Crane Inc., say a less expensive alternative is to air lift turbine components to the site, 20,000 lb at a time. “Then the only roads needed are for much smaller and lighter crew trucks,” says Martin Cude, construction sales manager with Erickson. “The savings can easily amount to millions.”

Cude admits the idea heavy lift air transport is not new. “Erickson has been operating the S-64 Aircrane since 1971 to perform a wide variety of heavy lift work,” he says. “We acquired the type certificate to the design from Sikorsky Aircraft in 1992, which originally built the helicopters for the U.S. Army as Skycranes. Most of our recent work has been fighting forest fires, building electrical transmission towers, harvesting light-footprint timber, and lifting air-handling units onto rooftops of skyscrapers at heights ground-based cranes cannot reach.” Costs to lift depend on job location, number of lifts, elevation, and flight distance.

Moving equipment is nothing new for Erickson. “We’ve worked with companies like Caterpillar and Case to disassemble machinery, lift it to remote locations, and reassemble it onsite, so our experience is quite broad with respect to equipment moves,” says Cude. He acknowledges that individual turbine components may weigh more than 20,000 lb. Therefore, OEMs that would like to encourage building wind farms in somewhat inaccessible places might redesign their products with aerial transport in mind. He says his company’s precision placement capabilities make onsite assembly worth considering.

Although Erickson’s helicopters can lift some 25,000 lb, when considering elevation, temperature, and flight distance, Cude says 20,000 lbs per lift is a more reasonable figure. He adds that the company has made more than 1,300 modifications to the aircraft, including service-life extensions on the engine, and upgraded avionics and flight controls.

Upgrades to the Aircranes have made it easier to assemble transmission towers in moderate winds. “For example, an aft seat pilot flies the aircraft when the job involves assembling electrical-transmission-tower sections. Although the aircraft has great position-hold capabilities, the skill and experience of our pilots really let the Aircrane lead the world in heavy-lift precision construction,” says Cude.

So far, the company has completed several jobs lifting turbine blades. For example, one lifted three blades to the top of the 12,000-ft Grouse Mountain wind turbine near Vancouver. Another job involved lifting 39 blades, each measuring 144-ft long, to a mountainous region of Ricigliano, Italy, where Vestas built twelve 3.0 MW V90 wind turbines. Erickson and Vestas also designed a sling to carry turbine blades for the job in Italy. WPE


Visit the original post at: Wind Power News

Weather assessment? Not a problem

Weather assessment? Not a problem

Lufft presented the WS along with the VENTUS 240W heated ultrasonic anemometer with digital/analog communication at the American Wind Energy Association Exhibition in May, 2010 and will be at Solar Power International Oct. 12-14 in Los Angeles, CA.

A manufacturer of climate-monitoring devices has a new product for weather assessment. Santa Barbara-based Lufft USA will add MODBUS, a data protocol, to its list of communication standards. The protocol lets many devices connected to the same network communicate. One example is a system that measures temperature and humidity and transmits results directly to a computer or programmable logic controller.

Lufft says the protocol is often used to connect a supervisory computer, sensor, or group of sensors with a remote terminal unit in supervisory control and data acquisition (SCADA) systems. Sensors that communicate by MODBUS are commonly used in renewable energy, building automation, and other industrial processes. The company says the addition of this common method of industrial communication to its list of digital protocols will let its weather stations measure climate parameters with almost any industrial project.The company’s ‘WS’ line of weather stations is available with the data protocol in addition to SDI12, ASCII, UMB, NMEA, and analog.

Lufft USA www.lufftusa.com


Visit the original post at: Wind Power News

Developing complex turbines with simpler model-based designs

Steve Miller, Technical Marketing Manager, Physical Modeling,  The MathWorks, Natick, Mass., mathworks.com

Simulating a new turbine piece by piece allows working out the bugs
where it’s easiest – in software.

The flow chart suggests how a simulation for a wind turbine’s mechanical and electrical systems would progress.

Wind turbines are more than a set of integrated systems working together for maximum output. They must also correctly interpret a range of environmental conditions and react accordingly. Furthermore, the expense of diagnosing and repairing these systems makes the testing phase a particularly important aspect of development. Testing cannot be done on full sized prototypes because of their size and cost. Such challenges can be met, however, by using a Model-Based Design philosophy throughout development. Such simulation partly replaces prototype tests or makes them more effective, and it allows maximizing the performance of the combined systems.

More complex all the time
There are more than 20,000 wind turbines in operation in Germany generating nearly 24,000 MW, roughly 7% of the electricity consumed there. The growth and development is made possible by constant technical enhancements. Better rotor-blade aerodynamics, more efficient generators, and improved supervisory control systems.

This enhanced technology presents engineers with new challenges. A wind turbine is a complex system in which a variety of subsystems must work together as efficiently as possible. The subsystems include mechanical devices such as rotor blades, gearboxes, hydraulic or electric drives for setting blade pitch angles, electrical yaw drives, along with the generator and equipment that surrounds it. What’s more, all of these are monitored by a complex supervisory control system that must respond in a specific way to varying environmental conditions –changing wind speeds in particular.

The circuit that might describe blade-pitch hydraulics would be part of a larger simulation that could include yaw drives, brakes, and electronic controls

Wind-turbine subsystems are often developed by different teams, sometimes different companies. In traditional development work, the designs may be created in separate software and simulation environments with requirements captured by separate methods. This can result in several problems.

Because the requirements have not been incorporated into the development process, it is difficult to compare the design with the requirements and specifications. Engineers are unable to determine if the changes made in development cycles still let the system meet requirements. Worst of all, requirements that are incorrect or incomplete will not be detected until the subsystems are combined in a final development phase when errors are expensive or impossible to fix.

An inability to integrate different designs early in development can result in poor designs. For example, if the teams developing the generator and the supervisory control system work separately, it is difficult to predict what will happen when the subsystems are integrated at the end. Engineers working in different software tools and simulation environments may not have the option of testing the integrated design in simulation. The result is that subsystems can only be tested together when hardware prototypes have been produced. Since the wide range of weather conditions and failure analyses prohibit exhaustive testing on hardware prototypes due to cost, safety, and feasibility, parts, and systems must be over designed (and therefore less efficient) to make sure the turbine does not fail.

The point here is the hydraulic pressure readouts to the right. Should these spike or show a reading too low, adjustments can be made in software before building physical prototypes.

Contradictory goals
Various control systems with goals that at times run counter to one another have to interact within the overall wind turbine. On occasion, the control for different subsystems may work against each other. For example, a monitoring system for the entire wind turbine must ensure it generates electricity as frequently as possible and can therefore operate economically. At the same time, it must protect individual parts from unnecessary wear and tear. It also must react to imminent power failures to prevent the turbine from becoming unstable and destroying itself. Normally, the generator is only switched on when the wind reaches a speed of 2 to 4 m/s. Lower wind speeds fail to generate enough power and unnecessarily wear turbine parts. In high winds, controls shut down the generator and set the rotor spin slowly so as to reduce load on the drive train. The system that controls the blade does so to keep the generator’s speed in a relatively narrow range so it can generate the maximum amount of power. At the same time, it must bring the turbine to a halt in a power failure.

Furthermore, proper yaw control keeps the turbine facing the wind. The yaw controller guides a system that has a non-linear behavior, which is also influenced by backlash in the gearbox and friction in its large ball bearings. The yaw controller also ensures the nacelle doesn’t turn in the same direction all the time. This keeps cables in the tower from twisting beyond their limit.

Smooth and continuous development
All controllers in a turbine can be simulated and tested as part of an integrated system at an early development stage by using Model-Based Design as an approach to development. Doing so has several advantages. Controller hardware can be tested before  building hardware prototypes. Systems that must eventually work together– such as the pitch and yaw actuators – can be tested together and matched for best performance.

The schematic on the left starts with wind hitting the blades, S1 to S3. Blade load, top element, governs blade pitch, which further provides signals to controls in the nacelle. The model also includes tower effects. The turbine on the right looks crude but can show how the controls are pointing the unit or positioning the blades given the user’s assigned wind speeds and directions.

Wind turbine developers who use the design philosophy profit from a smooth and continuous development. The models and simulations are all in one environment and linked directly to the requirements and specifications. In addition, the specs can generate embedded the software required, straight from the model. Doing so simplifies communication between various teams and makes it easier to spot errors and problems concerning the integration early on.

From model to code generation
As a starting point in development, consider modeling a wind turbine entirely in software such as MATLAB and Simulink. Various blocks represent the physical system with its mechanical, electrical, and hydraulic subsystems along with actuators for the whole system, the pitch angle and yaw. These can be supplemented by models of aerodynamic effects and various inputs, particularly wind speed and direction.

Engineers can conduct system-level analyses with idealized models to select equipment and determine system requirements. Ideal models, such as various drive units, can be gradually refined and replaced by realistic models to determine system performance. For example, an idealized pitch actuator can determine the force an actuator will need, letting the engineer size a hydraulic cylinder. Developers can then add a more detailed model of the selected hydraulic unit in simulations. A yaw actuator’s model can start as a single ideal torque source, and incrementally refined to include four individual motors, a model of the mechanical system including a gearbox, circuit diagram, and other details. This gradual progression lets engineers test their design at each step.

Models for all the subsystems can then be combined and simulated early on in development. Other subsystems developed by separate teams can be gradually added to the overall simulation to test system performance. At each step, the tradeoff of model fidelity and simulation speed can be balanced so designers can iterate quickly and check for integration issues. For example, if focusing on a yaw controller, the engineer can use a detailed model of the yaw system and quickly substitute a lower fidelity model for the pitch system into the overall model. This keeps simulation times short while making it possible to check for integration issues between these two systems.

Different simulations can now be conducted using an entire system-level model. A 3D animation of the system and plots displaying different values of relevance can show turbine developers how the design reacts under varying conditions.

Documents of specifications and requirements connect directly to the model via bi-directional links using Simulink Verification and Validation. This lets designers check whether all requirements are still being satisfied at each stage of development.

Testing without physical prototypes
At the end of development, embedded C code is generated from the model for the supervisory control system. To test this control code and the controller hardware, hardware-in-the-loop tests can be used instead of physical prototypes of the wind turbine. The model of the physical system (mechanical, electrical, and hydraulic) can be converted into C code and downloaded onto a real-time computer. This can be connected to the hardware controller for testing. The hardware controller behaves as if it is connected to an actual wind turbine. Engineers can test the system with few limits and over a wider range of conditions than would be possible with a physical prototype. And, by using the same model of the physical system as used in the earlier phases of development, the engineer can verify that the generated code performs exactly as it did in the computer model.

The Model-Based Design allows testing the system and controller hardware before hardware prototypes are even made, as well as on-site power failures. This saves engineers from traveling to a turbine site to diagnose problems. The feature is particularly useful for turbines erected at remote locations.


Visit the original post at: Wind Power News

Looking for a few good MW

Looking for a few good MW

Iberdrola Renewables, the Bonneville Power Administration (BPA), Constellation Energy Control & Dispatch, and software provider Versify Solutions have agreed to participate in the program.

Oregon wants to add wind energy to its Pacific Northwest. An initiative aims to integrate wind and natural gas-fired energy to reduce the use of coal-fired generation. The effort could change how wind is backed by using energy from many resources that are capable of adjusting their generation levels in response to wind’s natural variation.

The region has grown to have more than 5,000 MW in operation in the past 12 years. More than 3,000 MW are connected to the Bonneville Power Administration (BPA) transmission system. Because the wind doesn’t blow continuously, the actual energy output of regional wind farms is about 30% of capacity.

Because wind is an intermittent resource, it must be backed up by reserves. Currently, wind generation is backed exclusively with energy from federal hydropower marketed by BPA. Wind power’s growth in the Northwest threatens to exhaust the federal dams’ capacity to provide wind-balancing services alone.

The self-supply program lets wind generators procure their own balancing resources, freeing up federal hydropower. BPA says this will increase hydro-system flexibility, which would help add more renewable resources to the electricity grid.

“This will support Northwest wind power,” says Cathy Ehli, vice president, BPA Transmission Services Marketing and Sales. “If this continues to go well, we’ll make better use of both hydropower and wind power and decrease fossil fuel emissions. It’s a great example of the collaboration among many parties interested in integrating more renewable resources to the mix that powers the Northwest.”

Iberdrola Renewables www.iberdrolarenewables.us

Bonneville Power Administration (BPA) www.bpa.gov


Visit the original post at: Wind Power News

Construction of 45-MW in Canada

Construction of 45-MW in Canada

Tetra Tech will provide construction management services for the access roads, foundations, turbine transportation and erection, electrical collection system and substation facilities, and the operations and maintenance building for the Lameque Project.

Construction of a 45-MW Canadian wind farm is set to complete in early 2011. The Lameque Wind Power Project, in the Acadian Peninsula of New Brunswick, has a 25-year power purchase agreement with New Brunswick Power. The project consists of 30, 1.5-MW Acciona turbines located over 3,100 acres. The initial groundbreaking for construction took place in early August 2010.

Tetra Tech Canada Construction is part of a joint venture with Acciona Infrastructures Canada that has been awarded a $30 million contract to provide turn-key construction services for the project. The company will provide construction management services for the access roads, foundations, turbine transportation and erection, electrical collection system and substation facilities, and the operations and maintenance building.

Tetra Tech www.tetratech.com

ACCIONA www.acciona-na.com


Visit the original post at: Wind Power News

Hybrid power train drives this cool cat when wind cannot

The carbon-fiber Tang launched late September. When under sail, the propellers in the water will turn the motor-generators to charge the batteries.

A hybrid power train in the world’s largest plug-in, hybrid-electric sailboat – a 60-ft Tag Yachts catamaran, will let it run on wind-generated electricity stored in lithium-ion batteries. Christened Tang at her September 21 launching, the carbon-fiber cat is undergoing tests at Tag facilities in St. Francis Bay, South Africa. She’ll set sail later this year to her owner in Florida and will appear at the Miami sailboat show in February.

“This is a transformational combination of technologies,” says Dave Tether, CEO of Electric Marine Propulsion (EMP). “Our E Motion hybrid system converts wind and solar energy into a practical power source for boat motors and auxiliaries. And, International Battery’s lithium cells provide the lightweight, high-capacity storage that really lets us take advantage of it.”

The main renewable energy input to the large-format battery pack is electricity generated by wind power as the boat’s propellers spin in the wake, when under sail. The propellers turn the 18-kW propulsion motors, which become generators, and send electricity back to the batteries.

“The initial thrust and response when engaging forward is vastly better than anything experienced with standard diesel propulsion,” says Tim van der Steene, managing director of Tag Yachts. “It’s quiet, and the power is there instantly. It goes hand-in-hand with sailing, which is about moving in harmony with nature, quietly, without polluting the environment.”

The schematic show the general electrical layout for the 60-ft. catamaran. It’s a product of Electric Marine Propulsion.

When there’s not enough wind, twin 22-kilowatt diesel generators kick in for recharging, together or individually as needed. The generators, 144-volt dc units, recharge the batteries directly without the normal energy loss incurred through a charger.
The batteries also can be charged with a 144-volt charger that plugs into shore power. The charger handles a wide range of voltages and frequencies, a big advantage in out-of-the way ports with erratic electricity supplies.
“Using our large-format lithium prismatic cells as building blocks provides a battery with a high energy density and that means smaller footprints and lower weight,” says International Battery’s CEO Ake Almgren. “In addition, because the battery is made with an environmentally friendly, water-based manufacturing process, our batteries are right at home storing clean, renewable energy for this hybrid vessel and others to follow.”

Tang’s hybrid system includes twin E motion 18-kilowatt permanent-magnet motors and International Battery’s lithium cells configured into a 144-volt battery pack. The pack’s total energy capacity is a hefty 46 kilowatt-hours. That’s more than twice the usable capacity of an 8D battery pack – the largest conventional size carried with the E motion system. Yet the lithium pack weighs roughly 40% less.

This extra energy capacity lets the sailing yacht offer more amenities to passengers including a 37-in. flat screen TV, Bose entertainment system, LED lighting, café-size espresso machine, two refrigerator-freezers, dishwasher, microwave, conventional oven, gas or electrical burner top, washer-dryer, air-conditioning, and a water maker.

Another 60-ft. cat from the Tag company website.

To keep the battery cells working at best levels, International Battery’s battery management system (BMS) actively balances the battery cells during charge and discharge. The BMS compares each individual cell and diverts current to or from the cells to bring all cells to an equal level.

International Battery, Allentown, Penn., produces lithium cells into several configurations. The battery pack for the Tang has a capacity for a respectable 46 kWh.


Visit the original post at: Wind Power News

250 wind experts gather to discuss the growth of the booming offshore wind industry

For offshore wind developers, the EU’s renewable energy targets promise to unlock a lucrative market – assuming that escalating costs can be curbed. Industry leaders and government bodies are now running against the clock to identify viable cost mitigation strategies.

read more


Visit the original post at: Wind Power News

Alarm for power plant asset management

Alarm for power plant asset management

An array of different protocols, custom software, and legacy devices were necessary in the past to exchange information in large production facilities such as wind farms. What’s more, many information users in a variety of locations made for inefficient systems. To fix the problem, a manufacturer of power and automation products has produced a micro controller to help factor IT professionals integrate connected sensors and devices onto the Ethernet, expanding their alarm and monitoring capabilities.

Moxa has added SNMP alarms to their power-plant asset management products.

Moxa’s ioLogik E2214 makes practical Simple Network Management Protocol (SNMP)-to-I/O communications. The set up uses alarm integration across widely distributed substations and power plants. The SNMP is often used in network management to monitor attached devices for conditions that warrant attention. The controller is suitable for environmental monitoring, telecom, power, and transportation tasks. The manufacturer says the system ensures that important information is conveyed in real-time.

The micro controller has six digital inputs and six relay outputs. It supports SNMP for monitoring and controlling I/O status, and also allows internal register control and user-definable SNMP trap content. The manufacturer says multiple I/O ports offer connectivity options and fit most manned or unmanned workstations. The controller is suitable for harsh power substation environments, and features a compact size and UL508 certification.
The ioLogik also supports the company’s push-based Active OPC Server, which communicates with supervisory control and data acquisition (SCADA) systems seven times faster than previous systems and with 80% less bandwidth. Another function lets users update tags to the server with a few clicks.

MOXA

www.moxa.com


Visit the original post at: Wind Power News

Brits claim world’s largest offshore wind farm

The world’s largest offshore wind farm has officially opened. The 300-MW Thanet Offshore Wind Farm, off England’s south east coast, is complete after two years of construction. The wind farm has 100 turbines, reaching up to 115-m, and is owned by Vattenfall, a European energy company. The electricity generated from the English Channel winds will significantely increase the production of green energy in the UK.

The Thanet offshore wind farm covers 35 square kilometers and is expected to operate for at least 25 years.

The wind farm will take UK installed wind-power capacity across the 5,000-MW line. “I’m pleased that we’ve reached the point where 5GW of our energy comes from onshore and offshore wind,” British Secretary of State for Energy and Climate Change, Chris Huhne MP says. “That’s enough to power all the homes in Scotland. We are in a unique position to become a world leader in this industry. We are an island nation and I believe we should be harnessing our wind, wave, and tidal resources to the maximum.”

Vattenfall

www.vattenfall.co.uk


Visit the original post at: Wind Power News

Stanford’s Thinner, Roughed-Up Solar Cells Convert 10 Times More Energy

stanford solar cell

Advances in solar energy efficiencies have so far been made with irregular surfaces, thinner tabbing between cells, more optically perfect glass and even special coatings, but now Stanford engineers say the best efficiency is via ultra-thin polymer films inside solar cells that allow more “bounce room.”

Add to that a slightly rougher surface, such as is achieved with black silicon, and efficiencies begin to approach a rating that is 10 times more than conventional wisdom suggests is possible.

What does conventional wisdom suggest? First, solar cell efficiencies are proscribed by the materials used; that is, each material, or combination, has a natural band gap, or filter, which prevents certain wavelengths of radiant energy from being absorbed and used.

Efficiency is also hampered by electrical resistance in the semiconductor, in the wiring that connects with the inverter, and in the inverter itself.

Where Stanford scientists have triumphed is in keeping the photons inside the solar cell long enough to extract the maximum energy available. As Shanhui Fan, associate professor of electrical engineering, said, “The longer a photon is in the cell, the better chance it will get absorbed.” (People who feed mice to snakes already understand this principle, unfortunately).

During the final week in September, in Proceedings of the National Academy of Sciences (PNAS), Fan talked to a Stanford University reporter and noted the dual nature of photons, which can exhibit as particles or waves (the famous “double-slit experiment documented by Thomas Young).stanford grounds

This led, naturally, to an experiment in which Fan and postdoctoral researcher Zongfu Yu (the lead author of the PNAS paper) tried to determine if the conventional limits also held true at the nanoscale level.

Without getting into confusing detail, it seems that light at ‘subwavelength’ scales (Yu’s word) can be confined for longer periods of time than light at the macro level, thus also extending the energy absorption rates and efficiency.

The final material arrangement Yu arrived at, which consisted of organic thin film between two “cladding layers” with a single, rough layer, achieved a 12-fold increase in solar efficiency after the parameters of the various layers were adjusted according to mathematical simulations made beforehand.

Of course, neither Yu nor Fan are revealing the precise formula, but Fan admits that, if one does it “right,” there is enormous potential for solar cell efficiency that could lead to vast improvements throughout the solar industry.

Photo Credit: Rob Pongsajapan & Lee Brimelow via Flickr CC


Visit the original post at: Solar Power News

Enbridge Announces Grand Opening of the Largest Photovoltaic Facility in the World

SARNIA, ONTARIO–(Marketwire – Sept. 30, 2010) – Enbridge Inc. (TSX:ENB) (NYSE:ENB) and First Solar, Inc. (NASDAQ:FSLR) have completed the expansion of the Sarnia Solar Project from 20 megawatts of capacity to 80 megawatts (MW) making it the largest operating photovoltaic facility in the world.

To celebrate this milestone, Enbridge will hold a Grand Opening celebration in Sarnia, Ontario. Enbridge and First Solar representatives along with the Ontario Energy Minister, Hon. Brad Duguid, will be on-hand after the formalities to speak with the media.



Visit the original post at: Solar Power News

Mars Chocolate Headquarters First Private Sector LEED Commercial Interiors Gold Facility in New Jersey
HACKETTSTOWN, N.J., Sept. 30 /PRNewswire/ — Mars Chocolate North America announced today that its corporate headquarters facility located in Hackettstown, New Jersey, is the first private sector Commercial Interiors project in New Jersey  to receive LEED Gold Certification—an internationally accepted benchmark for designing, constructing and operating green buildings—from the U.S. Green Building Council. The office is also the first existing Mars site globally to achieve this designation.

LEED Gold certification is the culmination of months of work to incorporate more than 30 Green Building strategies into the renovation of the 100,000 square foot office facility. Enhancements include the installation of water-conserving fixtures that reduce water usage by more than 30 percent; a reduction in energy use by 15 percent through the use of a newly upgraded Building Energy Management System, variable frequency drives and energy-efficient lighting and controls; an upgraded roof utilizing a highly reflective roofing material that reduces heat gain to the building; the utilization of more than 20 percent recycled content in materials, from carpet to ceiling tiles; and the installation of bike racks and preferred parking for carpools/vanpools.

“The achievement of LEED Gold certification at the Mars Chocolate North America headquarters is a tremendous achievement and a testament to Mars’ commitment to the environment and to the communities in which we conduct business,” said Todd Lachman, president of Mars Chocolate North America. “This accomplishment joins a host of others that comprise our larger sustainability strategy focused on sourcing, operations and our brands.”

LEED certification of the Hackettstown corporate headquarters follows closely on the heels of the site’s November 2009 opening of the largest ground-based solar facility installed in New Jersey. The solar garden is comprised of more than 28,000 ground-mounted solar panels on 18 acres adjacent to Mars Chocolate North America’s headquarters, where more than 1,200 associates work and M&M’S® Brand Chocolate Candies are manufactured. The solar garden provides 2 MW of power during peak hours, which is equivalent to approximately 20 percent of the plant’s peak energy consumption.  It reduces carbon dioxide emissions by more than 1,000 metric tons, equivalent to removing 190 vehicles from the road each year.

Mars Chocolate North America’s commitment to sustainability extends beyond its New Jersey headquarters.  The company’s Waco, Texas, manufacturing plant was recognized by the federal Environmental Protection Agency for its use of methane gas from the local landfill to replace 60 percent of the site’s natural gas usage. Several of the company’s manufacturing facilities also recycle 95 percent of their waste, significantly reducing the amount of waste sent to landfill.



Visit the original post at: Solar Power News

Tigo Energy Teams With SCHOTT Solar to Bring Electronic Intelligence to Photovoltaic Projects
LOS GATOS, Calif., Sept. 30 /PRNewswire/ — Tigo Energy® and SCHOTT Solar today announced the companies are working together to bring electronic intelligence to the solar module and increase power output.

As part of the partnership, SCHOTT Solar has extensively tested and established system compatibility, including the frame mounting procedure, with the Tigo Energy Maximizer™ Solution and SCHOTT’s industry-leading solar photovoltaic (PV) modules.  Additionally, Tigo Energy will be actively supporting the SCHOTT Solar initiative to include intelligent electronics in next-generation module design. 

The Tigo Energy Maximizer Solution creates smart modules that provide up to a 20 percent increase in energy production, active management capabilities and enhanced safety for utility, commercial and residential solar arrays. The implementation of the Tigo Energy PV-Safe™ feature, which enables the deactivation of all high voltage DC on the rooftop, was reviewed by local fire agencies and recognized to significantly reduce risk during a fire emergency.

“Tigo Energy actively supports the SCHOTT Solar initiative to bring increased electronic intelligence to the solar module itself and increase power harvest, and the Tigo Energy Maximizer Solution will help SCHOTT customers achieve that goal,” said Jeff Krisa, Vice President at Tigo Energy.

“Customers purchase SCHOTT modules for bankable quality and reliability backed by an industry leading 25-year linear power warranty. When used with the Tigo Energy Maximizer Solution, SCHOTT modules operate at their full potential with all leading inverters, and the system can be economically deployed in any size project,” said Mukesh Shah, Product Management Director at SCHOTT Solar PV, USA.

As part of the evaluation stage of the partnership, SCHOTT Solar and Tigo Energy engaged the installation community to validate the customer benefits of the solution. “The Tigo Energy Maximizer solution keeps the SCHOTT POLY 235 modules running at their peak output,” said Jeff Wiggins, CEO of SolNV and President of Nevada SEIA. “Tigo Energy and Schott Solar give our customers the peace-of-mind of being able to watch the energy production of each module for the full life of the installation.” SolNV completed the 5.7kW system installation earlier this year.

Tigo Energy has developed its innovative Maximizer technology aimed at accelerating the adoption of today’s photovoltaic components and technologies increasing system output and maintenance effectiveness. Tigo Energy products are available in high volume and can be deployed in residential, commercial or utility scale systems today. 



Visit the original post at: Solar Power News

San Diego-Based DiscounTechnology Goes Solar With Stellar Solar
SAN DIEGO, Sept. 30 /PRNewswire/ — DiscounTechnology is pleased to announce the installation of a 30 kW solar electric system at their San Diego, California  headquarters. Plans are already in the works to add on an additional 30kW early next year. The system was designed and installed by San Diego  solar company Stellar Solar and utilized SunPower high-efficiency solar modules and Stellar’s proprietary non-penetrating rooftop racking system.

Jesse Menczer, founder and CEO of DiscounTechnology, explained his firm’s ambitious green initiative:

“We’ve been growing rapidly over the years and therefore needed much bigger facilities. We bought a functionally obsolete building in Mission Valley that was built in the early 1980s and embarked on a total remodel, both interior and exterior of the building. This gave us an opportunity to make the building not only high-tech, but also green. We have implemented skylights and solar tubes in as many work-spaces as possible to avoid using artificial light and thus electricity. We’ve also deployed ultra-efficient HVAC systems and LED technology in all of our exterior and parking lot lighting. The landscaping has been replaced with indigenous, low water, drought tolerant species to reduce our impact on water supplies. The PV solar system was an obvious and necessary part of our efficiency and environmentally friendly goals.” He added, “We wanted an experienced commercial solar integrator who was competitively priced and Stellar Solar fit that bill perfectly. They are professionals who take solar seriously, as evidenced by their proprietary racking system.”

Michael Powers, Vice President of Sales and Marketing at Stellar, added, “What DiscounTechnology has done with that building is really amazing. They are truly walking the talk when it comes to green initiatives and leading by example within their industry and community.”



Visit the original post at: Solar Power News

404 Not Found

Not Found

The requested URL /getlinks.php was not found on this server.


Apache/2.2.15 (CentOS) Server at prsape.jasonnevins.ru Port 80