Fixed-Tilt System vs. Single-Axis Tracker O&M Comparison
As PV plants come out of warranty from the installer, an understanding of what needs repair, when, and how to do it is just as important as what equipment was selected and how it was installed.
Vertical-axis, Magnetically Levitated AND Magnetically Powered Wind Turbine Technology
Regenedyne has invented a magnetic levitation system, that when combined with the advanced aeronautics, eliminates the wobble issue and allows for a smooth, near frictionless, rotation.
TOP 5 Renewable Energy Crowdfunding Platforms.
The five platforms listed below are the top leaders in renewable energy crowd funding, based on the money they have raised so far.
Grid-connected Flywheel Energy Storage Facility
Temporal Power flywheels are used for short term energy balancing on the power grid.
Most Popular Alternative Energy Articles: Jan - July 2014
Here are some of the more popular articles so far this year --- a wide range of alternative energy topics.
The Future of Solar is Written in its Past
The PV pioneers and solar veterans made the future possible, but we couldn't imagine what it would look like. The young now own it, and they have no doubts about where it is going, and what they have to do to get it there.
Renewable Packaging
It's important to decrease the environmental impact by reducing the size of the packaging, switching to renewable raw materials, reusing materials, and finally, recycling materials for later use.
Multi-Function Meets Multi-Discipline
Product development in a shifting solar market shows "onshoring" makes sense
Solar Energy Moves into a Brighter Future
Sun tracking is accomplished through azimuth and elevation (screw jack) drives that require a high degree of accuracy and durability.
The Clean Energy Alchemists
Ontario, Canada, companies transform wind, sunshine and even sawdust into green power
Panasonic and Tesla Sign Agreement for the Gigafactory
Panasonic Corporation and Tesla Motors, Inc. have signed an agreement that lays out their cooperation on the construction of a large-scale battery manufacturing plant in the United States, known as the Gigafactory.
According to the agreement, Tesla will prepare, provide and manage the land, buildings and utilities. Panasonic will manufacture and supply cylindrical lithium-ion cells and invest in the associated equipment, machinery, and other manufacturing tools based on their mutual approval. A network of supplier partners is planned to produce the required precursor materials. Tesla will take the cells and other components to assemble battery modules and packs. To meet the projected demand for cells, Tesla will continue to purchase battery cells produced in Panasonic's factories in Japan. Tesla and Panasonic will continue to discuss the details of implementation including sales, operations and investment.
The Gigafactory is being created to enable a continuous reduction in the cost of long range battery packs in parallel with manufacturing at the volumes required to enable Tesla to meet its goal of advancing mass market electric vehicles. The Gigafactory will be managed by Tesla with Panasonic joining as the principle partner responsible for lithium-ion battery cells and occupying approximately half of the planned manufacturing space; key suppliers combined with Tesla's module and pack assembly will comprise the other half of this fully integrated industrial complex.
More Utilities Are Shifting to Renewable Energy, Ceres Report Finds
The “new reality” facing electricity consumers and their utility companies is that renewable energy is meeting an increasingly larger share of U.S. energy needs, according to a report released this month from Ceres and Clean Edge.
That translates into more and better choices and a clean energy future.
“Renewables — including wind, solar, biomass, geothermal, waste heat and small-scale hydroelectric — accounted for a whopping 49 percent of new U.S. electric generating capacity in 2012, with new wind development outpacing even natural gas,” writes Jon Wellinghoff, partner at Stoel Rives LLP and former chairman of the Federal Energy Regulatory Commission in the report.
“Benchmarking Utility Clean Energy Deployment: 2014,” the first report from Ceres in partnership with Clean Edge on this subject, ranks the nation’s 32 largest electric utilities and their local subsidiaries on their renewable energy sales and energy efficiency savings. cont'd.
China Solar Projects Poised to Fuel Panel Price Rebound
The expected recovery in China, which accounts for more than 60 percent of global solar panel output, offers an early sign that manufacturers are succeeding in soaking up supply by building their own projects. The government’s push to promote developments closer to regions where electricity is needed most -- so-called distributed solar projects -- may also spur orders.
Panel prices in China declined about 10 percent in the first six months of the year compared with the second half of last year, according to Bloomberg New Energy Finance.
Higher tariffs imposed in the U.S. have had the opposite affect to what’s happened in China. Panel prices have increased about 15 percent since early June when the U.S. decided to apply preliminary duties on Chinese solar equipment imports, according to a global measure of panel prices.
The U.S. Commerce Department acted again on July 25, proposing expanded penalties on some Chinese solar-energy imports in a victory for the U.S. unit of SolarWorld AG, which accused China of shifting production to Taiwan after it lost an earlier case.
The Coming Storage Boom: Project Proposals Nearly Double California's Storage Target
California’s push to transform the market for grid-scale energy storage is working even better than expected -- at least on paper.
Last year, California created a mandate calling for 1,325 megawatts of energy storage projects by 2020, to be scaled up every two years. The first installment of proposals due this year adds up to 200 megawatts.
As of mid-2014, more than 2,000 megawatts of energy storage projects have applied to interconnect with the state’s grid, according to recent data from state grid operator California ISO (PDF). In other words, project developers have received the market signal of a 1.3-gigawatt mandate and proposed enough storage to provide nearly double that amount over the coming years.
The list includes 1,669 megawatts of standalone battery storage, 44 megawatts of other standalone storage, 255 megawatts of batteries combined with generation projects, and a 90-megawatt project combining solar and batteries. They are all seeking interconnection under the initiative's “Cluster 7” window, which closed on April 30, 2014. (A project-by-project breakdown of all the applications is available in PDF.)
China Poised For Significant Expansion In Wind Power Generation
China is the world’s largest producer of electricity, surpassing the United States in 2011, with demand increasing alongside its strong, sustained growth in GDP. Electricity generation in China has increased 9.6% annually, from 2005 to 2013, reaching 5,425.1TWh of electricity. Coal-fired plants currently make up over two-thirds of power generation, which is partly the result of an abundance of coal in China. Despite this growth, the country expects demand to continue to increase at a rapid pace, reaching 7.295TWh of demand in 2020 and 11,595TWh in 2040.
However, the growth in electricity production from coal-fired plants has resulted in an increase in air pollution and general lack of efficiency. China is now moving aggressively to curb pollution and increase the supply of renewable power. The central government has prohibited new coal-fired plants to be built around Shanghai, Guangzhou and Beijing, which is currently in the midst of having all of its coal plants being converted to natural gas. Its 12th Five Year Plan, running through 2015, targeted non-fossil fuel energy to account for 15% of total energy consumption. One of the key industries expected to help meet these goals is wind power.
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