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Documentary Shines A Light On The Solar Solution
May05

Documentary Shines A Light On The Solar Solution

What do an American worker, a Tea Party activist and a Chinese entrepreneur have in common? They’re all are racing to lead the global future of clean energy and their journeys are featured in Catching the Sun, a new documentary that showcases how doing good by the environment has created a boom in the renewable energy job sector.   “I was fascinated by the idea that solar power could democratize and decentralize energy in a way that creates economic opportunity for workers and entrepreneurs,” said Director Shalini Kantayya.   Kantayya’s film jumps between countries around the world that are fast-tracking solar production and follows some of the stories that have unfolded in its wake.   Among these stories are  Zhongwei Jiang’s , an entrepreneur in Wuxi, China, who grew up without electricity until he was 7. In 2003 Jiang took out a small interest loan from the Chinese government to start a solar company WesTech, which has grown by 50% every year and has expanded to Germany.   Other stories include those of solar installers in America who’ve found job opportunities in the burgeoning industry and a mayor who has fought tooth and nail against an oil corporation’s interests after a spill devastated her town.   The movie shows how one out of 83 new jobs created in the U.S. in 2014 was in the solar industry as a result from nearly 784,000 homes and businesses in the country embracing solar to save money and elevate property values.   Catching the Sun can be viewed on Netflix, downloaded on Vimeo or seen at select screenings taking place around the country....

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transformerless grid tie inverters lower cost

Transformerless inverters are popular in Europe and increasing becoming more common with 3-phase central inverters. But what exactly does transformerless really mean? Well traditionally inverters have built in transformers inside each unit. Although is a transformer really needed inside the inverter? Most buildings have a transformer on the same line as the solar grid tie inverter, therefore more than often the transformer in the grid tie inverter is really not needed. Some grid tie inverter manufacturers decided to eliminate the transformers to reduce the cost, size and weight of their product line. The greatest advantage of removing the transformer from the inverter is it increases efficiency since the loss components are eliminated. For transformerless inverters to meet NEC (national electric code) a more expensive PV wire has to be used to ensure a code compliant installation. What do you think about transformerless...

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the point of grid interconnection

Weather you’re connecting a solar electric system or a wind turbine to the grid you will require a point of interconnection. The NEC (National Electric Code) allows a grid tie inverters to be connected on the load side of your electrical service disconnecting means. Each grid tie inverter must be connected by its own dedicated circuit breaker or fuse. There was a change in the 2008 NEC that allows the sum of the supply breakers to be 120% of the busbar ratings for both commercial and residential solar pv installations. This change in the NEC rules allows small solar pv systems to be interconnected without having to upgrade the service panel. Grid interconnection is quite complex, it’s not as easy as simply wiring your grid tie inverter into the service panel. This information is good to know weather your the person conducting the installation or intend to hire a professional to grid tie your solar electric system, you must make sure your installation is up to NEC...

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samlex grid tie inverters

Samlex has been widely known for their off-grid inverters, until the company released the Soleil Grid Connected PV Inverter product line. The soleil 2000 grid tie inverter is a 2000 watt inverter that has a built in remote monitoring software, which can be connected to a computer via RS 232 cable, this way the inverter will output system statistics to your computer, so you can always know how much electricity your generating. The grid tie inverter has Maximum Power Point Tracking (MPPT) built in, typical of most grid tie inverters on the market today. MPPT maximizes the energy you can harvest from your solar array. The most interesting aspect of the soleil 2000 is the design is compact and lightweight which makes it one of the most simple and cost effective grid tie inverter on the market today. What do you think about the soleil 2000 grid tie...

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what options do you want with your inverter?

Inverters are the key part of a solar electric system, they convert DC power generated by the solar panels into AC power. I would call the inverter the brain of the solar electric system because it has a computer processor inside and logs the performance of your inverter. There are some great optional features to help you get more out of your inverter. data monitoring – I wrote a blog post on web monitoring in the past, most inverters have the capability to connect to the Internet and post performance results to a website you can check anytime. remote control- the ability to control or program the inverter from a remote location. Inverters can connect to a network through a wireless card or ethernet port. transfer switch – In a system that has multiple inverters, a transfer switch would increase reliability of a system in case of failure. series or parallel operation – depending on your system design and the number of inverters you have you may need to wire the inverters together in parallel or...

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