Showing posts with label solar power. Show all posts
Showing posts with label solar power. Show all posts

Wednesday, November 6, 2013

Where natural gas and power transmission intersect

By Teresa Hansen
Editor-in-Chief

I recently attended a conference in Washington, D.C. called TransForum East. It was organized by PennWell through one of its latest acquisitions, TransmissionHub, a research, analysis and news portal. As the name implies, the conference deals with electricity transmission, but this year the low price of natural gas and how it is affecting the electric power sector was a hot topic.

Kent Knutson, TransmissionHub's director of data strategy and content, said transmission investment in the U.S. is growing. During the first nine months of 2013, nearly $6.7 billion was invested in transmission projects, up considerably from the $5.6 billion spent in all of last year.

Knutson expects continued growth through 2015. Most activity is in 345 kV projects being driven by Texas competitive renewable energy zone (CREZ) and Western Interconnection projects. A fair amount of activity is also occurring in the Midwest and PJM independent system operators and the Northeast Power Coordinating Council territories.

As in other areas of the electric power industry, uncertainty is prevalent in the transmission sector. Changing technologies, cyber and physical security threats, regulations, siting issues and customer expectations are to blame for much of that uncertainty.

Cheap gas becomes a transmission driver

The changing power generation mix, however, is perhaps the biggest culprit. Electricity generated by wind and solar energy is rapidly being added into the mix. Coal plants are being retired because they can't meet EPA regulations. Cheap natural gas is resulting in a build-out of new gas-fired combined-cycle generation to replace retired coal plants and back up intermittent renewable energy.

New transmission is needed to connect renewable energy with load centers, plus load forecasting and balancing technologies must be added to manage this intermittent supply. New gas-fired generation being built in areas with inadequate transmission capacity is also driving new transmission construction. In addition, in some areas, especially the northeast, gas-fired plants are being built in areas with constrained gas pipeline capacity.

Transmission operators are concerned that these plants, which they count on for supply, could fall off the grid if pipeline capacity is used for other demands such as home heating. Because many new gas-fired plants are owned by independent investors and merchant generators, differing opinions and uncertainty exist about who will pay for needed electric transmission infrastructure as well as gas pipeline infrastructure.

Will FERC address uncertainty?

Many look to the Federal Energy Regulatory Commission (FERC) for clarity on these issues. FERC Commissioner Philip Moeller, who spoke at TransForum, acknowledged that transmission owners and operators face many hurdles. Moeller said FERC knows the lack of a federal policy allowing transmission owners to build across state lines is a problem, but he doesn't foresee a federal law changing siting issues for interstate transmission lines in the near term.

He also said that uncertainty surrounding return on equity (ROE) exists. He said FERC has created much of this uncertainty, but his only words of encouragement came when he said ROE is a "live" issue for FERC.

Low- to moderate-priced natural gas, which Moeller said will stick around for some time, will continue to drive gas-fired generation and transmission growth. Better coordination between gas suppliers and electricity generators must be addressed, he said.

Longer-term issues, he said, such as who pays for the gas infrastructure to secure supply to generators, are more vexing. A big part of the solution involves the two industries learning more about how the other one works, he said.

Even with the uncertainty, Moeller said he is "bullish" on transmission and "it's an exciting time" in the transmission industry. "If the issues were easy, someone else would have already solved them. You need to stay active and involved," he said.

Wednesday, June 19, 2013

Speeding up solar power


Many renewable energy projects, once a site is found and construction begins, deal with a lot of land, a lot of labor and a lot of building materials and equipment. Imagine an entire range of rolling hills that slowly becomes a wind farm, or an empty expanse of desert badlands gradually filling up with row upon row of 10,000 or more photovoltaic panels. The finished product can be a majestic sight, sure, but before the control room fires up and power starts flowing onto the grid, there's still the matter of all that construction that has to happen first.

Companies that can cost-effectively speed up this process while still producing a reliable and long-lasting product could probably clean up with the renewable energy market performing as strongly as it is right now.

A colleague of mine, James Montgomery of RenewableEnergyWorld.com introduced me to Alion Energy (pronounced like the words "a" and "lion"). This company's process builds solar photovoltaic panels into a sort of ramp structure that uses fewer materials to put together than other methods, and the entire process is done with robots.

And why not use robots? Similar processes using robots are already used to lay traintracks or build sidewalks. Alion's president and CEO Mark Kingsley is a veteran of ABB's robotics unit, Trina. 


During construction, the "Rover" installation robot (seen above, courtesy to Alion Energy) travels along a concrete railing built for the project that also serves as the mounting for the solar panels. To begin with, Rover is loaded up with solar panels. Rover fixes the solar panel legs into the concrete railing with a high-strength, high-durability epoxy that is used in bridge construction. The panes and their preattached mountings come next, attached to the legs. With that, the robot moves on to the next solar panel.

One of the big advantages to this approach is using fewer materials. The concrete that the railings are shaped out of is cheap and can be acquired on a local basis. There's no large panes of glass to worry about transporting, unbroken, to the site. No bulky metal frames or fasteners are needed.

Labor costs, similarly, can be reduced this way. No trenches have to be dug, no nuts and bolts need tightening. Plus, the robots don't get fatigued by repetitive work in areas where the sun beats down with a lot of heat, either.

As far as scalability goes, Alion told RenewableEnergyWorld.com that the benefits of the approach only increase when applied to bigger solar projects. Essentially, the bigger the project, the more money can be saved. The railing system can be used in areas with high winds or prone to storms, and in rocky areas or urban brownfields, according to the company.


With Rover's job done and the solar power feeding onto the power grid, another robot takes over to perform maintenance duties. A smaller robot named "Spot" (above) performs automatic cleaning of the mounted solar panels so dust and dirt do not accumulate and cause a loss of generation efficiency. Spot has his own solar-powered battery and his own solar panel, and when he isn't working, he "lives" near one end of of the concrete rail system before sliding across the panels to perform his duties. Spot can also use a hedge-clipping attachment for vegetation management, where and when it is needed.

Automated, efficient construction could potentially mean a lot for the renewable energy sector when and where it can be used. Increasing a generation technology's speed-to-market can only make it more attractive to the prospective investor — the people without which a project can't reach fruition.

Tuesday, April 30, 2013

Verizon to invest in solar power, fuel cells

The energy industry and the communications industry are getting quite cozy these days, and no wonder. Information technology and telecom companies like Google, Apple, Sprint and Microsoft (just to name a few) need innovative approaches to keep the power flowing to their ever-expanding networks of data centers, call centers, corporate offices and other properties.

Just this week, telecom giant Verizon Communications announced its plans to invest as much as $100 million in natural gas fuel cells and solar energy capacity in 19 facilities in seven states.

According to Reuters, SunPower Corp. will provide rooftop and ground-based solar arrays, some of which will be mounted onto parking facilities. Natural gas will power the fuel cells, which will be provided by Oregon-based ClearEdge Power.

Verizon will put these energy improvements into place at office space, call centers and data centers in Arizona, California, Maryland, Massachusetts, New Jersey and North Carolina.

Officials from Verizon are insisting that these green energy sources are meant to boost system reliability — not merely to boost the company's environmental profile. The point out that fuel cells already in place at a switching station in Garden City, Long Island, N.Y. stayed active throughout Superstorm Sandy even when the local grid was knocked out of service.

The technology will be able to generate 8 million kilowatt hours of electricity every year — enough to power about 6,000 homes.

Verizon already uses fuel cells and solar energy, but this is the company's largest investment on such technology so far, officials said.

Likewise, Apple is building solar energy and fuel cell capacity to serve its data centers in North Carolina. Apple has told news sources that it wants to power its data centers entirely with clean energy.

Google is spending about $1 billion on clean or renewable energy for its energy needs and recently floated the idea of special renewable energy rates for large commercial and industrial firms whose customers would prefer them to use cleaner power.


Thursday, October 18, 2012

Obama, Romney talk about energy, with energy

President Barack Obama and former Gov. Mitt Romney faced off at New York State's Hofstra University October 17 with polls tightening and each man eager to make their appeals to the country's remaining undecided voters still available in the 2012 election's last few weeks.

While the first presidential debate saw little mention of energy as an issue — with Romney briefly mentioning government subsidies to green energy firms, like the bankrupt Solyndra — this debate had the candidates talking energy both frequently and early on in the proceedings.

Last night, a member of the town hall audience broached the topic of energy costs with a question about gas prices and plans to lower them. He said Obama's secretary of Energy, Stephen Chu, has said it is not the policy of the DOE to help lower gas prices, and asked Obama directly if he agreed. Obama responded to this question by talking about the production of oil, coal and natural gas.

The president said that while production of fossil fuels is up, the country must also invest in wind power, solar power and biofuels, as well as make vehicles that burn less gas.

On natural gas, Obama said, "We've got potentially 600,000 jobs and 100 years worth of energy right beneath our feet with natural gas. And we can do it in an environmentally friendly way, but we have got to continue to figure out how we can get efficient energy because that is how we can reduce demand and that is what's going to keep gas prices lower."

Both candidates tried to claim the mantle of an "all of the above" energy policy, which has become a bit of a catchphrase for both parties of late. Obama said Romney's plan is not all-of-the-above because he would let "oil companies write the energy policies."

"So he's got the oil and gas part, but not the clean energy part," Obama said. "China and Germany are making these clean energy investments, and I'm not going to cede those jobs of the future to those countries. I expect those new energy sources to be built right here in the United States."

"I want to make sure we use our oil, our coal, our gas, our nuclear, our renewables. I believe very much in our renewable capabilities. Ethanol, wind, solar will all be an important part of our energy mix," Romney said. "But what we don't need is to have the president keeping us from taking advantage of oil, coal and gas."

Building a coal-fired power plant in specific, Romney said, is nearly impossible to do under current regulations — hinting that this is by the design of Obama's EPA.

Obama countered this charge by saying that as governor of Massachusetts, Romney "took great pride" in shutting down a coal plant.

"You stood in front of a coal plant and pointed at it and said, 'This plant kills,'" Obama said.

According to the Tampa Bay Times' PolitiFact, the plant Obama referred to was the Salem Harbor Power Station, which was then owned by Pacific Gas & Electric. The four-unit coal-burning plant had been ranked as one of the "Filthy Five" plants by an environmental group and as the newly elected governor, Romney decided not to support a plan to grant the plant an extension to comply with emissions rules. At a videotaped press conference, Romney said, "I will not create jobs or hold jobs that kill people, and that plant — that plant kills people."

Obama went on to say that his administration invested in "clean coal" technology.

CNN reporter Candy Crowley, who served as moderator, asked whether the price of gas be meaningfully addressed by an American president at all, or are per-gallon prices hovering around $4 the "new normal," Crowley wanted to know.

The subject went back to oil production, where Romney said production on public land had dropped by 14 percent this year, which sparked a testy exchange and back-and-forth denials.

Apparently both men decided that the sure-fire winner was talking about gas prices — with Obama defending his record and talking about production, and Romney in turn saying the strategy hasn't worked because of the price you pay at the pump.

While there was occasional name-checking of wind or solar, this debate's energy talk was almost limited to fossil fuels, though. The energy we feed into the grid by burning fossil fuels wasn't talked about much by either candidate, and nobody said a word about energy infrastructure, grid cybersecurity or the smart grid.

It wasn't too much to hope for either. I have heard this president say the words "smart grid" before, even though many voters might not yet know what it means. Romney, I'm sure, is aware of these technologies too, having helped manage the finances of high-tech companies in his private asset management days.

I wish "energy" in the context of a political debate could occasionally mean something more than "gas prices" though.

It was a town hall style debate, and time was limited however. According to at least one report, Crowley had a question on climate change in her pocket that she never got around to asking. That could have potentially yielded some thought-provoking statements. Maybe if there had been a bit less crosstalk on the floor, she could have gotten to it.

There is still one more debate, but it will primarily concern foreign policy. This debate, then, was probably the last time energy policy could conceivably have been brought up in any great detail — at least with both the president and the governor in the same room.

If you want to know where these candidates stand on energy issues, it looks like you're going to have to do a little digging.

For more on Romney and Obama's respective energy plans, see Jennifer Van Burkleo's story from the September-October issue of Electric Light & Power magazine.

And please, don't forget to vote — Nov. 6, or earlier if your state allows it.

Thursday, September 13, 2012

Land of the rising sun runs increasingly on solar power

UPDATE: Shortly after this blog was written, Reuters reported that Japan will shortly introduce a plan to wean itself off of nuclear energy entirely by as soon as 2030. This development will doubtless result in an entirely new energy policy and eventually an entirely new generation mix for the country.

In many spots around the globe, power producers and utilities are looking to deconcentrate their grids away from large, centralized power generators and steer them more toward distributed generation. There are cons to this approach, but the benefits are attractive, at least in theory.

While some countries have the luxury of carefully weighing these pros and cons, there is one country that's being forced by current events to decentralize, and rapidly, just to keep the lights on.

New research indicates that post-Fukushima Japan is now the world's third-largest solar energy markets, with nearly 5 GW of installed solar capacity. Germany and Italy, respectively, are the first and second. In some ways, though, this is a return to form for Japan rather than a new development.

In the 1990s and the early 2000s, Japan was the world leader in solar. Due to the cancelation of programs that backed solar (as a result of the government response to the "Lost Decade" depression in that country) and an accompanying shift toward nuclear power, Japan took its eye off the ball when it came to solar energy.

Then, of course, came the earthquake, the tsunami and the Fukushima disaster.

(Photo credit: Shutterstock)

Since then, Japan's government has taken a second look at solar, and added more than 1 GW of solar capacity last year. The majority of this new generation is grid-connected, with all the benefits and drawbacks that adds.

With the adoption of new solar-friendly regulations and generous tariffs, companies across Japan's economic spectrum have announced plans to set up solar parks and install rooftop solar arrays on their properties. To boot, Japan is also one of the world leaders in manufacturing solar cells, modules and other key materials that support the solar energy supply chain.

Can a country replace a highly productive nuclear fleet with solar energy? That question raises further questions, but it's certainly a daring strategy and it will be interesting to watch unfold.

Thursday, June 21, 2012

The incredible shrinking solar plant

By Jeff Postelwait
Online Editor

In the U.S. solar power market, developers are looking for access to the cash they need to build large, utility-scale solar projects, but that money is proving hard to find. If this keeps up, makers of solar farms in excess of 20 MW could be eclipsed by firms who put solar panels on rooftops.

In the first quarter of 2012, there were 506 MW of new solar projects that went online — accounting for some $1.9 billion in spending. This is a drop from the last quarter of 2011, which saw $3.1 billion worth of investment.

One factor? Shrinking and disappearing subsidies. Government funding is fading fast, and it's hard to say when Washington might feel like investing in solar power again — particularly with elections looming. It goes without saying that any whiff of uncertainty isn't good for upstart solar companies and their projects.

However, where the industry has recently favored big solar projects like the 290 MW Agua Caliente Solar Project being built by First Solar and NRG Solar in Yuma County, Arizona, we could soon see an uptick in small and medium solar power projects.

A huge undertaking like Agua Caliente was once thought to represent an industry sea change toward big solar power, but even proponents of solar power as a generation source can't deny that Agua Caliente would still be a patch of bare sand out in the desert without the Department of Energy loan guarantee that made it possible.


It's much easier at this point for solar developers to pursue smaller projects, like say teaming up with a big-box electronics store and installing some solar panels on the rooftops of a few stores. The chain gets good press, the solar manufacturers sell equipment, the projects are easier to approve, nobody has to worry about harming the desert tortoise's habitat, and generally everyone goes home happy.

But is this the way for the solar industry to finally get off what I've heard energy analysts describe as "the crack cocaine of public subsidies" once and for all and stand by themselves as their own industry? It's hard to say yet because there are still too many factors to consider.

Cheap natural gas is still a fierce competitor to just about any other generation technology, whether it's coal-fired plants or a solar farm. On the other hand, many state governments still have renewable portfolio standards to think about. On the other, other hand, there's the problem of incorporating too much solar energy onto the grid too soon without infrastructure upgrades. On the other-other-other hand, solar still has the advantage of being "sexy," meaning companies who want to look hip or forward thinking are still going to want to invest a little in solar — like Google, Inc. for one example.

Whether solar as an industry is ready to take off the training wheels and pedal without extensive tax breaks and subsidies is too large a question for me to answer. But from the way things are looking now, I expect to see fewer mega-sized solar projects going up in the U.S.

Tuesday, May 22, 2012

It's (trade) war between the U.S. and China

By Jeff Postelwait
Online Editor

Things are heating up again between the U.S. and China, and this time the trouble has to do with international trade and the equipment used to capture solar energy. For several years now, U.S. energy companies have complained they can't compete with the "flood" of cheap solar energy gear that's coming from China and flooding the U.S. and world markets. Companies facing financial troubles or bankruptcy, like Solyndra for one, are looking for a scapegoat, and many of them are pointing at China.

In response, the U.S. Department of Commerce is launching an investigation into these practices. This "anti-dumping" investigation led Commerce to explore the option of levying duty fees, or tariffs, against the Chinese-made solar goods. Just last year, China sold more than $3.1 billion worth of solar cells and panels in the U.S., so it's easy to see why it's referred to as a "dump." While nothing is final yet, Chinese firms are hopping mad, some American firms are pointedly silent, and trade groups with interests worldwide just want everyone to get along.

This isn't the first time Commerce has threatened to impose such tariffs, or indeed carried them out. There were tariffs taken out against Chinese electric blankets, of all things, not too long ago. But protectionism is always controversial, and in today's global economy it's not always easy to know if one country's tariffs might not also harm companies within that same country's borders. Some American energy companies that use Chinese-made solar parts might stand to lose profits if they have to buy them at higher margins, for example.

If the tariffs go through, Chinese companies will be left to either raise their prices in hopes of turning a (now lowered) profit, or else move their manufacturing centers outside of China to dodge the tariffs. Some companies that might be subject to future tariffs could be poised to do so. Suntech Power Holdings, for example, which could face tariffs as high as 31.2 percent, has regional headquarters in Switzerland and the U.S. as well as China, and could conceivably shift operations to those or other countries. Mexico and Taiwan are two spots that Suntech, and other companies like it, might consider.

Suntech, perhaps predictably, says it opposes any barriers to trade at any point along the solar power supply chain. But what are American companies saying? As I write this, they're mostly pretty quiet, and I'd assume happy. But there are signs I might be assuming wrong.

Whether an energy company in America is smiling or frowning about these potential tariffs depends greatly upon where they sit on the solar supply chain. The guys who shape steel and silicon into panels might be happy, but the folks who actually slap the finished panels onto rooftops, for example, might be less so.

We should also not forget that there are other firms in other countries who'd like to do business making solar farms in the U.S. Companies based in Germany, Spain and elsewhere are feeling the squeeze as China has tightened its grip on the U.S. market these past few years. They might also stand to benefit from tariffs, perhaps. Assuming they are pointed squarely at Chinese firms, that is.

The U.S., for its part, claims that all it wants to do is level the playing field. But can it really be level at this point? By now everyone understands the problems that China, also known as "The World's Factory," can cause the rest of the world with their massive workforce and low labor costs. They have the power and willingness to produce goods and ship them to market at costs few other countries can match.

Still, there is the little matter of international trade laws. While I am by no means an expert on those, I assume the U.S. Commerce Department is. So I will be watching what comes out of their offices in the coming weeks, as I'm sure the Chinese will as well. It should be interesting. Stay tuned for more.