圣地亚哥公共事业签署太阳能光伏公约，主要利用电力线竞争

圣地亚哥天然气电力有限公司已经签署了了一项协议，要购买离圣地亚哥市90英利以东的太阳能光伏电站.该项应用计划通过Sunrise Powerlink公司来传输电力，它是热门的受欢迎的有竞争力的传输线公司，这项计划正在等着最后的批准。

光伏电站将会达到125兆瓦的额定的高峰产能，得到是议会的批准，其电力子公司LS也在特拉华州的多佛进行开发10兆瓦的光伏电站。

加利福尼亚太阳能电站将建在临近因皮里尔县的加利西哥的农田上建立并穿越了墨西哥的墨西卡利边境。这个地方每年日光强烈并且在科罗拉多大沙漠里，灌溉成就了这里的农业。

圣地亚哥天然气电力在最近的一次发布消息说已经签订了20年的电力购买协议与LS子公司开发130兆瓦的产能，叫做森蒂尼拉太阳能。拟议的电厂将会占150公顷并且预计在2014年运作。

将会有大约1000兆瓦的电力，这个数量可能传统的燃煤电厂或核电厂产出生产容量的高峰。

没有Sunrise powerlink公司，许多可更新能源设施将会没有明确的路径进入圣迭戈市场，应用新闻发布会上说。

其他网站上，该实用工具的回应是“屋顶上太阳能发电将会对是第一个的将来起到至关重要的作用，但是还是不足以满足我们客户的能源需求。

一个更大的的750兆瓦的太阳能项目也在该地区提倡，并计划分阶段建成。叫做帝国谷太阳能。

该工厂将会开发光伏设备，将会使太阳光直接转化成电力并且不会用水分离偶然设备清洁。一些。光伏系统甚至为了这个不使用水。

使用大型设备，如太阳能光伏组件发电厂有潜力通过生产规模市场化去减少他们的业主花费。

San Diego Utility Signs Solar PV Pact That Aims to Use Contested Power Line
 
Published May 16, 2010

San Diego Gas & Electric Co. has signed an agreement to buy electricity from a proposed solar photovoltaic power plant that would be located about 90 miles east of the San Diego metropolitan area. The utility plans to transmit the electricity through the Sunrise Powerlink, a hotly contested proposed transmission line that still awaits final approval.

The photovoltaic plant would have a rated peak production capacity of about 125 megawatts, according to the developer, LS Power, a New Jersey-based company that operates conventional power plants and transmission lines in many states across the country. An

LS Power subsidiary also is developing a 10-megawatt solar PV plant in Dover, Del., which has received approvals from city boards.

The California solar plant would be built on farmland near Calexico in Imperial County, across the border from Mexicali, Mexico.

The area has high annual insolation levels and lies within the Colorado Desert, which is part of the larger Sonoran Desert that stretches across southern Arizona and California and into Mexico. Irrigation has made the Imperial Valley an important farming region.

San Diego Gas & Electric said in a recent news release that it has signed a 20-year power-purchase agreement with an LS Power subsidiary for up to 130 megawatts of production from the proposed plant, called Centinela Solar Energy. A power-purchase agreement is similar to a lease: The developer or another party owns and maintains the equipment and sells the electricity to a customer.

"Renewables are the linchpin of SDG&E's commitment to becoming the quintessential utility of the future," said Jessie J. Knight Jr., the utility's chief executive officer. "We are accessing large amounts of environmentally friendly power and developing the infrastructure and smart technology to bring it to our communities. These advances provide tangible benefits for our customers."

The proposed power plant would take up 1,150 acres and is expected to be operating in 2014。 The Sunrise Powerlink, a proposed 500,000-volt power line, would transmit the electricity to the San Diego metropolitan area about 90 miles due west.  The power line would follow a 120-mile path that would take it across about 20 miles of the Cleveland National Forest. The U.S. Forest Service, the last administrative agency that must sign off on the plan, has yet to approve it. Approvals already granted by the California Public Utilities Commission and the federal Bureau of Land Management are being challenged in court by opponents of the power line.

The Sunrise Powerlink would have a carrying capacity of about 1,000 megawatts of electricity, an amount that might be generated at peak operating capacity by a large conventional coal-fired power plant or nuclear plant.
Sunrise Powerlink The utility has said that the line is intended specifically to carry solar, wind and geothermal energy from renewable-energy plants yet to be built. "Without the Sunrise Powerlink, many renewable-energy facilities in the Imperial Valley have no clear path to the San Diego market," the utility's news release said.

Opponents say that the power line, expected to cost $1.9 billion, is not needed and that rooftop solar generation in the San Diego area is a better choice. San Diego has been the leading California city in adopting rooftop solar, with more than 2,100 arrays installed as of last year.

On its website, the utility's response is that "Rooftop solar will play a critical role in San Diego's future, but it's not enough to meet our customers' energy needs. Over the next decade, nearly 300 megawatts of new solar is expected to be installed in the region. However, to match the amount of energy the Sunrise Powerlink could deliver, you'd have to install solar panels on 855,000 residential rooftops. San Diegans would pay 10 percent of the $1.9 billion Sunrise Powerlink. If we rely exclusively on rooftop solar panels instead, SDG&E customers would pay the entire estimated cost of $20 billion and receive little improvement to energy reliability."

A much larger 750-megawatt solar project, called Imperial Valley Solar, also is proposed in the area, and is planned to be built

in phases. If fully built out beyond 300 megawatts, this project would require use of the Sunrise Powerlink. Imperial Valley Solar, unlike the Centinela power plant, would use concentrating solar power. Its technology involves focusing mirrors in large dish receivers onto heat-powered engines to generate electricity. This form of concentrating solar power uses much less water than other types, Imperial Valley Solar says.

The Centinela Solar Energy plant would deploy solar photovoltaic equipment, which converts sunlight directly into electricity and does not use water apart from occasional equipment cleaning. Some solar PV systems do not use water even for that.

Using solar PV modules in large-scale installations such as solar power plants has the potential to reduce their cost for homeowners through economies of manufacturing scale