In addition to expanding its manufacturing, the company plans to add to its sales support operations and to build its research and development teams for future products.
The company has posted openings for product managers and an information technology manager and engineers.
SolarBridge, which has raised $46 million to date, is a leading maker of advanced and efficient microinverters that improve the reliability of rooftop solar power systems, increase energy production and save costs by simplifying installation.
The company, which is expanding rapidly in Austin, expects to employ 75 people worldwide by the end of this year. It has announced partnerships with two major makers of solar panels, Kyocera Solar Inc. and SunPower Corp., and it expects to announce more partners soon. The first panels with its inverters installed should be available for sale this summer.
Volume manufacturing of its devices by Celestica, an international contract manufacturer, started in April at its factory in Dongguan, China.
CEO Ron Van Dell said SolarBridge operates in a segment of the solar power market that accounts for about $3 billion a year in global sales. Much of the industry's focus so far has been on how to make solar panels more cheaply and efficiently. But now, Van Dell said, industry attention is shifting to power inverters, which can be another area for improving savings and reliability.
The company, which licenses technical discoveries made at the University of Illinois, uses advanced power electronics to create an inverter that it says will work for 25 years or longer and "harvest" more than 95 percent of the energy produced by solar panels.
2011年6月26日星期日
Enphase Energy filed to go public
Solar panel micro-inverters transform a direct current generated by the photovoltaic cell on the panel into an alternating current. The alternating current is fed into a power grid, which can’t accept a direct current. Micro-inverters are built into a single solar panel rather than an array of solar panels. As a result, the total electrical output of a solar array does not suffer when a single solar panel is damaged or in the shade.
Enphase Energy’s micro-inverters are compatible with about 80 percent of solar modules currently on the market.
Enphase Energy filed to go public and raise up to $100 million earlier this month. Like a number of other companies filing to go public this year, Enphase has not been profitable for several years. The company lost $21.8 million in 2010 and $16.7 million in 2009. It also lost $9.3 million in the first quarter this year, up from a loss of $3.7 million in the first quarter of 2010.
The company brought in $18.1 million in revenue in the first quarter this year, up 56 percent from $11.6 million in the first quarter of 2010. It brought in $61.7 million in revenue in 2010, up 205 percent from $20.2 million in revenue in 2009.
Enphase raised $63 million in its last funding round in July last year led by Kleiner Perkins Caufield & Byers. The company raised $22.6 million in a funding round in May 2009 and $6.5 million in January 2008. The company has raised a total of around $113 million to date.
Competitor SolarBridge also recently closed a $19 million funding round led by Rho Ventures and Battery Ventures. SolarBridge’s micro-inverters last around 25 years, compared to typical centralized power inverters that usually last around a decade. SolarBridge also includes a 25-year warranty on its micro-inverters. SolarBridge has raised round $46 million total after launching in 2004.
Enphase Energy’s micro-inverters are compatible with about 80 percent of solar modules currently on the market.
Enphase Energy filed to go public and raise up to $100 million earlier this month. Like a number of other companies filing to go public this year, Enphase has not been profitable for several years. The company lost $21.8 million in 2010 and $16.7 million in 2009. It also lost $9.3 million in the first quarter this year, up from a loss of $3.7 million in the first quarter of 2010.
The company brought in $18.1 million in revenue in the first quarter this year, up 56 percent from $11.6 million in the first quarter of 2010. It brought in $61.7 million in revenue in 2010, up 205 percent from $20.2 million in revenue in 2009.
Enphase raised $63 million in its last funding round in July last year led by Kleiner Perkins Caufield & Byers. The company raised $22.6 million in a funding round in May 2009 and $6.5 million in January 2008. The company has raised a total of around $113 million to date.
Competitor SolarBridge also recently closed a $19 million funding round led by Rho Ventures and Battery Ventures. SolarBridge’s micro-inverters last around 25 years, compared to typical centralized power inverters that usually last around a decade. SolarBridge also includes a 25-year warranty on its micro-inverters. SolarBridge has raised round $46 million total after launching in 2004.
2011年6月19日星期日
The top five coolest ways to integrate renewable energy into the grid
Intermittent renewables at high penetrations will bring new challenges for the grid. But how big will they be? And is it true that wind and solar will necessarily need storage or natural gas back-up at high levels?
The International Energy Agency (IEA) wanted to know, so it modeled a variety of high-penetration scenarios in eight geographic regions around the world. Hugo Chandler, a senior policy analyst with the IEA, explains the organization's findings to Climate Progress:
Variability is not just some new phenomenon in grid management. What we found is that renewable energy is not fundamentally different. The criticisms of renewables often neglect the complementarities between different technologies and the way they can balance each other out if spread over certain regions and energy types.
Grid operators are constantly working to balance available supply with demand -- it's what they do. There are always natural variations that cause spikes in demand, reductions in supply, or create disturbances in frequency and voltage. Once you see there are a variety of ways to properly manage that variability, you start whittling away at the argument that you always need storage or a megawatt of natural gas backup for every megawatt of renewable energy.
Theoretical modeling is important. But what companies are doing in reality?
Here's five of the top methods for integrating renewable energy into the grid -- proving that intermittency isn't the showstopper that critics make it out to be. Explanations of each of these with videos are below.
Intelligent demand response is often called the "killer app" of the smart grid. Demand response is not a new concept -- but the "intelligent" part is still somewhat new.
The demand-response leader, EnerNOC, is now applying this concept to renewable energy. The company announced earlier this year that it would work with a Northwestern transmission operator to help manage demand to meet the fluctuating output of wind electricity in the system. EnerNOC President David Brewster calls it "the perfect dancing partner for wind." By ramping up demand at facilities during times of peak supply and lowering demand when supply drops off, the grid can respond to changing conditions in real time without the need for storage.
Microinverters and maximum power point trackers
Inverters are the gateway to the grid -- turning direct current electricity from solar photovoltaic (PV) systems to grid-friendly alternating current. Over the past several years, there has been a revolution in inverter technologies that allows project owners to more effectively regulate system performance. One technology, the microinverter, is installed on the back of individual panels, turning each module into its own unit and providing real-time data on how each is operating. Therefore, if clouds roll over a PV system, the "Christmas tree light effect" is avoided, and each panel still functions normally, maximizing the output of a system -- sometimes by 20 percent or more.
Speaking of maximizing output, that's where maximum power point trackers come in. These pieces of power electronics are also installed on the back of individual panels. But they're not microinverters; instead, they boost voltage to an optimal range for a central inverter, thus allowing the device to run more efficiently. By allowing a system owner to control a PV plant at the module level, you can boost performance on the module level and regulate voltage even as weather patterns change.
The International Energy Agency (IEA) wanted to know, so it modeled a variety of high-penetration scenarios in eight geographic regions around the world. Hugo Chandler, a senior policy analyst with the IEA, explains the organization's findings to Climate Progress:
Variability is not just some new phenomenon in grid management. What we found is that renewable energy is not fundamentally different. The criticisms of renewables often neglect the complementarities between different technologies and the way they can balance each other out if spread over certain regions and energy types.
Grid operators are constantly working to balance available supply with demand -- it's what they do. There are always natural variations that cause spikes in demand, reductions in supply, or create disturbances in frequency and voltage. Once you see there are a variety of ways to properly manage that variability, you start whittling away at the argument that you always need storage or a megawatt of natural gas backup for every megawatt of renewable energy.
Theoretical modeling is important. But what companies are doing in reality?
Here's five of the top methods for integrating renewable energy into the grid -- proving that intermittency isn't the showstopper that critics make it out to be. Explanations of each of these with videos are below.
Intelligent demand response is often called the "killer app" of the smart grid. Demand response is not a new concept -- but the "intelligent" part is still somewhat new.
The demand-response leader, EnerNOC, is now applying this concept to renewable energy. The company announced earlier this year that it would work with a Northwestern transmission operator to help manage demand to meet the fluctuating output of wind electricity in the system. EnerNOC President David Brewster calls it "the perfect dancing partner for wind." By ramping up demand at facilities during times of peak supply and lowering demand when supply drops off, the grid can respond to changing conditions in real time without the need for storage.
Microinverters and maximum power point trackers
Inverters are the gateway to the grid -- turning direct current electricity from solar photovoltaic (PV) systems to grid-friendly alternating current. Over the past several years, there has been a revolution in inverter technologies that allows project owners to more effectively regulate system performance. One technology, the microinverter, is installed on the back of individual panels, turning each module into its own unit and providing real-time data on how each is operating. Therefore, if clouds roll over a PV system, the "Christmas tree light effect" is avoided, and each panel still functions normally, maximizing the output of a system -- sometimes by 20 percent or more.
Speaking of maximizing output, that's where maximum power point trackers come in. These pieces of power electronics are also installed on the back of individual panels. But they're not microinverters; instead, they boost voltage to an optimal range for a central inverter, thus allowing the device to run more efficiently. By allowing a system owner to control a PV plant at the module level, you can boost performance on the module level and regulate voltage even as weather patterns change.
2011年5月25日星期三
A Few Things to Know About Solar
Thinking of saving electricity by investing in a solar photovoltaic (PV) system? Here are a few good things to know, pulled from a recent Greenbiz.com webinar on Solar Powered Buildings: Worth Another Look as Prices Fall.
Powerhouse Solar Shingles
Federal tax credits— The 30 percent residential renewable energy tax credit is good through 2016. This gives you up to a 30 percent credit for the cost and installation of a solar PV, solar thermal, wind, geothermal heat pump and fuel cells. There is no ceiling, and excess credit can generally be rolled forward to the next tax year. So if you’re interested in solar technology, it’s a good idea to start pricing and planning now. You can find federal and local incentives at dsire.com
Micro-inverters— The traditional solar PV setup includes an inverter that converts the DC energy created at the solar panel to AC for your home’s use. But one inverter for an entire array can pose limitations on how much energy you realize from your PV system. It’s complicated, but by using one inverter, a solar panel that’s shaded or not performing well can lower a centralized inverter’s maximum power point, and thus the amount of electricity you receive from the system. So in some smaller systems, a micro-inverter is used for each panel. These cost more, but your system may perform better. Some reports indicate that micro-inverters can boost energy harvesting in residential systems up to 15 percent.
DC optimizers—< Also called power boosters, these can be placed on every panel and used with a central inverter to maximize the power coming from the panels and eliminate issues such as shading on one of more panels.
Costs— According to Greg Sheppard, chief research officer for IHS iSuppli, residential solar costs continue to fall, from about $2.50 per watt per module (or panel) in 2009 to about $1.50 per watt today, and costs are expected to drop to almost $1 per watt (or about $200 per panel) in 2015. Though these are panel costs, not installation costs. According to the Open PV Project from NREL (National Renewable Energy Lab), the average cost for solar panel installation in the United States was $6.94 per watt in 2010. Manufacturing costs will certainly continue to decline. “Manufacturing is a lot more efficient,” Sheppard says. “A lot of [assembly of solar panels] was done by hand up to a couple of years ago.”
Thin Films are Coming— Most solar panels today are made with crystalline silicon, though expect to see more flexible, thin panels that use technologies like CIGS (copper indium gallium selenide), Cadmium Telluride (CdTe), and amorphous silicon, though for now the efficiencies of crystalline silicon are better. The best efficiencies in available high-end monocrystalline silicon panels are about 19 percent, according to Sheppard. Look for thin-film technologies in BIPV (built-in photovoltaic) systems like roofing shingles. This year Dow Chemical will introduce its Powerhouse Solar roofing shingles, with the solar panels provided by Global Solar. The flexible CIGS panels are built right into asphalt shingles.
Energy Monitoring— Good energy monitoring systems exist for solar arrays, and are recommended to properly measure a PV system’s performance. An inverter, for example, will display the output of electricity but not what goes into it. So an improperly working inverter may go unnoticed without energy monitoring. Systems that can monitor a solar array’s energy production include eMonitor, EcoDog and Agilewaves.
Powerhouse Solar Shingles
Federal tax credits— The 30 percent residential renewable energy tax credit is good through 2016. This gives you up to a 30 percent credit for the cost and installation of a solar PV, solar thermal, wind, geothermal heat pump and fuel cells. There is no ceiling, and excess credit can generally be rolled forward to the next tax year. So if you’re interested in solar technology, it’s a good idea to start pricing and planning now. You can find federal and local incentives at dsire.com
Micro-inverters— The traditional solar PV setup includes an inverter that converts the DC energy created at the solar panel to AC for your home’s use. But one inverter for an entire array can pose limitations on how much energy you realize from your PV system. It’s complicated, but by using one inverter, a solar panel that’s shaded or not performing well can lower a centralized inverter’s maximum power point, and thus the amount of electricity you receive from the system. So in some smaller systems, a micro-inverter is used for each panel. These cost more, but your system may perform better. Some reports indicate that micro-inverters can boost energy harvesting in residential systems up to 15 percent.
DC optimizers—< Also called power boosters, these can be placed on every panel and used with a central inverter to maximize the power coming from the panels and eliminate issues such as shading on one of more panels.
Costs— According to Greg Sheppard, chief research officer for IHS iSuppli, residential solar costs continue to fall, from about $2.50 per watt per module (or panel) in 2009 to about $1.50 per watt today, and costs are expected to drop to almost $1 per watt (or about $200 per panel) in 2015. Though these are panel costs, not installation costs. According to the Open PV Project from NREL (National Renewable Energy Lab), the average cost for solar panel installation in the United States was $6.94 per watt in 2010. Manufacturing costs will certainly continue to decline. “Manufacturing is a lot more efficient,” Sheppard says. “A lot of [assembly of solar panels] was done by hand up to a couple of years ago.”
Thin Films are Coming— Most solar panels today are made with crystalline silicon, though expect to see more flexible, thin panels that use technologies like CIGS (copper indium gallium selenide), Cadmium Telluride (CdTe), and amorphous silicon, though for now the efficiencies of crystalline silicon are better. The best efficiencies in available high-end monocrystalline silicon panels are about 19 percent, according to Sheppard. Look for thin-film technologies in BIPV (built-in photovoltaic) systems like roofing shingles. This year Dow Chemical will introduce its Powerhouse Solar roofing shingles, with the solar panels provided by Global Solar. The flexible CIGS panels are built right into asphalt shingles.
Energy Monitoring— Good energy monitoring systems exist for solar arrays, and are recommended to properly measure a PV system’s performance. An inverter, for example, will display the output of electricity but not what goes into it. So an improperly working inverter may go unnoticed without energy monitoring. Systems that can monitor a solar array’s energy production include eMonitor, EcoDog and Agilewaves.
2011年5月18日星期三
Free brochure power electronics for developers
The brochure provides information on power electronics 48 pages of color components and modules for all engine and drive ratings, and overall performance, and control technology.
The topics include an introduction to intelligent engine control, Which is very diverse and highly dependent on the application. We present optimized components for specific drive and Umrichterarten and purpose of their actual applications are shown.
Powerful, modern IGBTs and MOSFETs are in "Power Electronics" represented as well as highly integrated IGBT driver that interfaces insulating devices and inductive and capacitive components for high power inverters and solar micro-inverter.
Whether digital signal controller (DSC), analog and interface technology or power modules with and without a driver circuit: All day All components and modules of the regulation, control and power electronics are presented.
The topics include an introduction to intelligent engine control, Which is very diverse and highly dependent on the application. We present optimized components for specific drive and Umrichterarten and purpose of their actual applications are shown.
Powerful, modern IGBTs and MOSFETs are in "Power Electronics" represented as well as highly integrated IGBT driver that interfaces insulating devices and inductive and capacitive components for high power inverters and solar micro-inverter.
Whether digital signal controller (DSC), analog and interface technology or power modules with and without a driver circuit: All day All components and modules of the regulation, control and power electronics are presented.
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