Another Hamilton NJ System

September 27, 2004 by · Leave a Comment
Filed under: Solar Energy 

I’m signed up to offer my SREC’s (Solar Renewable Energy Credits) on the NJCEP website. At that site, my e-mail address is available, so that people can make me offers.

The other day I got an e-mail from Nick, who has a system of his own in Hamilton, NJ. He’s about 2-3 miles from me as the crow flies.

His system is a 7.6 Kw Sanyo/Sharp system. The panels are Sanyo 180W panels – the Sharp 185’s weren’t available. Nick says about the panels: “the Sanyo is a hybrid design which operates at a higher efficiency than any other module I found. It also operates at a wider range of the light spectrum so it tends to harvest more power. They were also about 5% more expensive.” The inverters are the Sharp 3500 watt inverters – the same as mine. He did a self-design, self-install, working with a local electrician. He had the same trouble that I did with the township, but his time from permit application to completed installation was only 6 weeks (I suspect that he benefited from us a little, as he applied later).

I haven’t seen his system yet, but he agreed that I could post the pictures that he e-mailed to me. Here they are, with my guesses at what we’re looking at.

pv_house

This is the view from the front of the house. Apparently, the front of his house points east, so part of the panels are pointed east and part are pointed south.

East Array

This must be the eastern ones (the file name is “east array”).

South Array

This is the south-facing array.
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pv_inverters

The Sharp inverters on the left and panels on the right.

CB Panels

Nick added the ability to hook up to a backup generator plugged in outside the house. The thing at the top with meters and the big switch looks like the transfer switch. The breaker panel on the right is the main house panel that utility power is connected through. The panel on the left is the sub-panel for backup protected power. The solar inverters input into the house system there. The little box on the left is a whole-house surge suppressor.

Disconnect Switches and Meter

Here are the external disconnects. The DC disconnects are on the right. The AC disconnect is in the right-hand side of the meter panel. Note that PSE&G hadn’t changed out the meter yet in this picture from July – it’s probably been done by now. Nick and I both prefer the old analog meter – the new digital meter doesn’t really show power flowing from the house to the utility very well. It’s much nicer to see the meter turn backwards.

Below the box on the right in this picture is the connect point for a future generator.

All in all, it’s a nice system – especially for a self-install. His system produces more power than mine, but cost him a few thousand less. Nick is talking about us visiting each other’s systems to compare notes, and we’ll probably do that soon.

Now he gets the joys of startup billing issues from PSE&G!

Yet Another Update

April 23, 2004 by · Leave a Comment
Filed under: Solar Energy 

I spoke to my installer again today.

He’s been to the township and spoken to everybody.

Electrical – apparently, we were missing a few switches on the diagram, and the price of the permit is set per component. That is fixed, though it will probably cost me more. He also dropped off specs for the inverter showing the GFI components and explaining the PV system’s lack of need for a transfer switch. He thinks that will satisfy them.

Building – As it turns out, my installer was involved with a case 2 years ago that sparked (pun not intended) a change in the process for solar energy installations.

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As a result, Mayor Glen Gilmore issued an executive order on April 15, 2002. The order said in part:
“Whenever an application for solar panels or other scientifically recognized, environmentally friendly reusable source of energy are received by the … township, every reasonable effort shall be made to complete the necessary municipal application by administrative review, without the necessity of requiring a formal zoning board appearance.” (Quoted from a Trenton Times article of 4/23/2002)

My installer spoke with the mayor’s office, all of the zoning officials and the legal department. They all remembered the executive order, but were having trouble finding it. Today, they found it, and Paul Adezio (who my installer reports is a really nice guy – he’s the Municipal Attorney) walked it over to the Planning department today. He’s also FAXing a copy to my installer, who will give me a copy later.

So hopefully, we are back on track with the application. The new wild-guess target date is sometime the week of May 3, assuming that the permits are issued next week sometime.

Permit Woes

April 17, 2004 by · Leave a Comment
Filed under: Solar Energy 

It just gets worse.

I received a letter from the township in yesterday’s mail. Our permits are on hold for the following problems:

Building

“You must obtain a prior approval from the Planning Department for the solar panels on the roof.”
This is a screw-up by my installer. I told him back in January that our township was very tough on everything, and I’m 90% sure that I suggested to him that he call them to find out whether or not there are local requirements. He didn’t, assuming that the process would be like other local municipalities. His ego (“I do all of the time – I know what needs to be done.”) is gonna cost us more time.

Electrical

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OK, minor problem – must have missed a box.

“No transfer switch shown on drawing.”
This is the electrical official’s inexperience with PV solar systems. There is NO transfer switch – the whole point of being grid-connected is that both systems interoperate. My installer is clearly going to have to teach this official about solar. I’m the third system in town (that I know of – the first having been installed by my installer) and I think I may be the first that is completely grid-connected with no batteries involved.

“GFI protection not shown.”
OK, no biggie here either. The inverters have GFI protection built in, so my installer will just have to show/copy the inverter specs.

Overall, I still think that this shows poor planning by my installer. Rather than make one phone call or even a visit to the township inspections department asking what he needed to do, he went forward assuming that jobs are just like the township that he lives in. This is costing us time and therefore money in savings on our bill. It’s fundamentals of project management – “make the plan, check the plan, check it again, do the plan”.

Delays Redux

April 9, 2004 by · Leave a Comment
Filed under: Solar Energy 

I heard from my installer this morning.

The reason that I hadn’t heard anything from him is that he left my file at home when he went on his Florida vacation. He didn’t have my block and lot number, and felt that he wouldn’t be able to check on the permit, so he didn’t call the township. (I don’t think my wife had those numbers either when she called.)

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So, I have to rearrange vacation at work for some unspecified future date. *sigh*