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Petra’s pole panels a solar power no-brainer

By | September 23, 2009, 9:30 AM PDT

Some ideas are just plain no-brainers. There are an estimated 150 million wooden utility poles in the U.S. just reaching up toward the sun. And that doesn’t count metal poles and high tension line towers (or trees for that matter!?).

Why not put solar panels on every last pole and feed the juice back into the grid? They’d be out of everyone’s way.

A no-brainer

A no-brainer

That’s what Petra Solar is doing with its Sunwave solar panels which can produce up to 200 watts each. Putting one (or several) on 100 million poles could potentially yield 20,000 megawatts.

But we’re only at the beginning of this type of technology. In July, Petra won a $200 million and three and a half year contract to put Sunwaves on 200,000 utility poles in New Jersey. And the panels can be used on rooftops as well.

Petra is a sponsor and exhibitor of GridWeek, a conference in Washington this week about the smart grid. Petra CEO Shihab Kuran is a speaker at the conference.

I’m trying to think of obstacles to this, but outside of the usual suspects such as cost, reliability, yield and maintenance, I really can’t come up with any. Who could the sight of these panels possibly offend?

Why didn’t I think of this?

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John Dodge

About John Dodge

John Dodge was a contributing editor for SmartPlanet from 2009 to 2010.

John Dodge

John Dodge

Contributing Editor, Technology

John Dodge has written for the Wall Street Journal, Boston Globe, PC Week (now eWeek), EDN, Design News, Electronic Business, Bio-IT World, Health-IT World, Lowell Sun, Haverhill Gazette and Newburyport Daily News. He is based in Massachusetts.

Follow him on Twitter.

John Dodge

John Dodge

John Dodge prides himself on completely independent journalism. His opinions, observations and reporting are not influenced by any financial holdings. He holds no shares in computer, electronics, software or Internet companies. He also has no business affiliations with organizations except with those for which he creates content as a freelancer.

He writes for SmartPlanet and is not an employee of CBS.

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RE: Petra's pole panels a solar power no-brainer
Killer idea - I guess the cost of the inverters will be the big thing here. I imagine they'd have to go up to transmission voltage...
Posted by mike_krieger
23rd Sep 2009
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RE: Petra's pole panels a solar power no-brainer
Not sure how it ties into the grid, but there is a residential AC module (inverter)....will find out

http://www.petrasolar.com/downloads/SunWave-AC-Module.pdf
Posted by John Dodge
23rd Sep 2009
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RE: Petra's pole panels a solar power no-brainer
In my estimation, the usual suspects that you mention (cost, reliability and maintenance) are huge obstacles. In most of the US, photovoltaics are marginally competitive with grid power, even when the panels are deployed in large arrays on the ground. You can use one inverter for many panels, and when the capacitors break down after ten years, you only have one inverter to replace.

Putting panels on poles does get you unobstructed sun, and telephone poles are already sort of ugly, so I'd expect fewer complaints about appearance, but I doubt those advantages are enough to outweigh the disadvantages of cost incurred by separate inverters up on poles.
Posted by Brandon Stafford
23rd Sep 2009
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RE: Petra's pole panels a solar power no-brainer
Inverters covering several of many panels makes sense, but I suspect that would raise line cost...will talk to Petra about it.

I still like the simplicity of the idea....and cost of solar is going down while the cost of oil, coal and dirty power is likely to rise over the long term.
Posted by John Dodge
24th Sep 2009
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RE: Petra's pole panels a solar power no-brainer
Why not just put panels on the buildings that are usually just a few feet
away from the poles, have lots more space for more panels and would use
one large inverter instead of dozens of small ones?
The cost of installing, maintaining panels and inverters would be far less
and the panels would be even closer to the final point of load.

Next thing, someone will come up with a wall-plug inverter so that solar
calculators can power your home and claim its a good idea.
Posted by nickbk
25th Sep 2009
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RE: Petra's pole panels a solar power no-brainer
What about the opportunity for stealing or vandalizing the panels - sort of like the old country high-schooler (mentality at any rate - happens in suburbs a lot, also) pastime of knocking over roadside mailboxes? This could possibly add greatly to maintenance costs.

Maybe that could be minimized if the panels were put near the tops of the poles, and that would have the added advantage of being less obtrusive visually, although the downside is the need for climbing the pole for maintenance.
Posted by aroc
26th Sep 2009
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RE: Petra's pole panels a solar power no-brainer
Good point. aroc. I say make it a federal crime to vandalize such panels just like it is for mail boxes. And in the event one is shot, hopefully it will be wired such that one damaged cell won't take the whole panel offline. With the advent of smart grids, you could potentially have these panels report back damage when it occurs.

The only really big potential problem I see, is that they are likely fixed mounted to the pole. In an area that gets high winds, or even hurricanes, this could cause a massive financial loss unless they were really built tough.
Posted by HeadScratcher7
26th Sep 2009
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RE: Petra's pole panels a solar power no-brainer
One problem will be how to keep vandals from breaking/destroying them.
Posted by lars@...
18th Mar 2010
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RE: Petra's pole panels a solar power no-brainer
One issue would be how to protect them from idiot vandals?
Posted by lars@...
18th Mar 2010
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RE: Petra's pole panels a solar power no-brainer
I've found back-of-the-envelope calculations on the web that estimate that these solar panels will take 48 years to break even on the money they cost to install. That's assuming no maintenance costs in the next 48 years. Going green is well and good, but this just seems like a HUGE waste of money to me. Also, have you actually seen them? They're on almost every pole in my area and they are UGLY as sin. Telephone poles are ugly enough, and now they have these big solar panels sticking out the side. I think a better plan would have been to cover the roofs of buildings. That probably would have been cheaper, faster, and easier to install as well since you can do a whole bunch at one time.

Bill
Pennsauken, NJ
Posted by wkrick
4th Jul 2010
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