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Posts Tagged ‘transmission’

Transmission constraints derail California solar project

Posted in alternative energy, energy, environment, eSolar, PG&E, renewable energy, solar energy, solar power plants, tagged , , , , , on June 18, 2010| 1 Comment »

photo: eSolar

This post first appeared on Grist.

Amid all the hope and hype about the nascent solar boom under way in California, there’s long been an elephant in the room – transmission. Billions and billions of dollars must be spent to build and upgrade transmission lines to connect dozens of proposed solar power plants to the grid.

Now that elephant has rolled over and squashed one project’s use of innovative solar technology. Last year, California utility PG&E signed a deal with NRG Energy, a New Jersey-based electricity provider, to buy power from a 92-megawatt solar farm called the Alpine SunTower to be built near the desert town of Lancaster, northeast of Los Angeles.

The power plant would deploy solar thermal technology developed by eSolar, a Pasadena startup founded by serial technology entrepreneur Bill Gross. NRG and eSolar earlier had inked a partnership to build 500 megawatts’ worth of solar farms. In January, eSolar reached an agreement with a Chinese company to supply technology for solar farms that would generate a massive 2,000 megawatts of electricity.

PG&E, however, submitted a letter recently to the California Public Utilities Commission  asking approval for a re-negotiated deal with NRG that has resulted in a downsizing of the Alpine SunTower project to 66 megawatts. And instead of deploying eSolar’s fields of mirrors that focus the sun on a water-filled boiler that sits atop a tower to create steam to drive a turbine, the power plant will generate electricity from photovoltaic panels like those found on residential rooftops.

The utility gave no reason for the technology switch. “NRG has not finalized the exact type of panels or the manufacturer of the panels,” a PG&E executive wrote in the letter. “Solar PV panels have been used in installations throughout the world, in both small and utility scale applications.”

However, when I contacted eSolar about the change, I received a joint statement from the company and NRG:

“NRG is returning the project to its originally proposed size to match the transmission capacity available to the project at this time,” it said. “Maintaining the project as previously announced would require waiting for additional interconnection studies and potential transmission upgrades that would delay the project delivery date.”

While solar panels are not as efficient as eSolar’s solar thermal technology in generating electricity, they are modular – meaning you can just keeping adding them to produce a desired amount of power or to match the transmission capacity in an area. ESolar’s power plants, on the other hand, are designed to be built in 46-megawatt units so there’s far less flexibility in scaling them up or down.

It’s too early to say whether this portends other switches from solar thermal to photovoltaic technology, especially as solar cell prices fall and California utilities scramble to meet a mandate requiring they obtain 20 percent of their electricity from renewable sources by the end of this year and 33 percent by 2020.

But the elephant is getting restless.

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Credit crunch burning solar industry

Posted in alternative energy, climate change, energy, First Solar, global warming, green collar jobs, green financing, green policy, green tech, investment tax credit, renewable energy, solar energy, solar power plants, SunPower, Suntech, Uncategorized, tagged , , , , , , , , on December 3, 2008| 2 Comments »

solana1The credit crunch is taking a toll on the United States’ nascent solar industry, scuttling big renewable energy projects and curtailing expansion plans, solar executives said Wednesday as they proposed the inclusion of green incentives in the Obama economic stimulus plan.

Spanish energy giant Abengoa, for instance, has put on hold plans to build its 280-megawatt Solana solar power plant outside Phoenix to supply electricity to utility Arizona Public Service (PNW) in a $4 billion deal, said Fred Morse, senior advisor to Abengoa Solar.

“We have serious issues getting financing,” said Morse during a conference call held by the Solar Energy Industries Association. Congress in October passed a 30% investment tax credit crucial to the solar industry. But Wall Street’s meltdown has scared off investors that normally would finance large solar projects in exchange for the tax credits.

“The investment tax credit was passed but unfortunately there was no ‘I’ in the ITC,” Morse added. “We have trouble finding tax-equity investors, the financing is gone.”

Suntech America president Roger Efird said that after Congress passed the investment tax credit, the Chinese solar cell maker immediately doubled its sales force in the U.S. That expansion has now hit a wall.

“Plans to double our sales force by the end of 2009 are currently on hold, primarily because business has slowed in fourth quarter because of the credit crunch,” he said. “We had been considering establishing manufacturing in the U.S. The timing of those plans depend on the growth of the market in the U.S. and how long it takes to get through this downturn.”  Suntech’s (STP) stock – like those of rivals SunPower (SPWRA) and First Solar (FSLR) – has been walloped by the market chaos and is down 94% from its 52-week high.

Ron Kenedi of Sharp Solar said the dealers and installers who buy the Japanese solar module maker’s products have had a hard time securing credit to finance their operations.

In response, the solar industry’s trade group on Wednesday proposed that the federal government cut through the credit crunch by adopting tax and investment policies to stimulate the solar sector and create 1 million jobs.

The centerpiece of the plan is a $10 billion program to install 4,000 megawatts of solar energy on federal buildings and at military installations. “The Department of Defense alone could jump start this industry and it could have widespread impact on the use of solar, similar to what it did for the Internet,” said Nancy Bacon, an executive with Michigan thin-film solar cell maker Energy Conversion Devices (ENER).

Bacon noted that the federal government is the world’s largest utility customer, spending $5.6 billion annually on electricity. “This would create 350,000 sustainable jobs,” she said. “The solar industry is ready to deploy these systems immediately.”

The Solar Energy Industries Association also wants Congress to enact a 30% tax refundable tax credit for the purchase of solar manufacturing equipment to encourage solar companies to build their factories in the U.S. That would result in an estimated 315,000 new jobs. Making the current investment tax credit refundable would also help loosen up financing for solar projects, the association said.

Other policies on the SEIA agenda:

  • Establishment of a national Renewable Portfolio Standard that would require states to obtain a minimum of 10% of their electricity from green sources by 2012 and 25% by 2025, with 30% of the total coming from solar.
  • Rapid deployment of new transmission lines to connect cities to remote areas where wind and solar power is typically produced.
  • Expedited approval of solar power plant projects on federal land in the Southwest.
  • Creation of an Office of Renewable Energy in President-elect Obama’s office to coordinate the procurement and permitting of solar power and transmission lines.

“We are working closely with the Obama energy transition team and have been in contact with Congress,” said SEIA president Rhone Resch. “These polices are exactly the kind of shot in the arm our economy needs today.”

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