Is now a good time to invest in solar?

[Artman]

My state (NJ) is offering rebates of $1.75 per solar watt installed up to 10000 watts ($17,500 max) Feds are giving 30% tax credit (approximately $18,000 after state rebate is subtracted), utilities in NJ are forced to purchase SRECs to show they are complying with regulations to use green energy sources. These are at current market values of $680 per 1000 kWh solar electricity produced they will be issued for 15 years (a system can produce electricity 6.5 hours a day in my area so 10 kWh will produce about 23 SRECs a year or about $15,640 a year at current market value). Solar is a home improvement that is exempt from property taxes in my state. All the incentives add up to paying off the investment in just a few years not even counting the electricity saved.

My wife and I are considering installing a grid tied system of somewhere between 6.5 and 10 kW (cost will probably be between $60,000 and $80,000). What do you think, is now a good time to go solar?

 

[FredGarvin]

Just in our local news last night was a fight that is going to court because a homeowner purchased solar cells but his subdivision association won't let him put them up. He already has permission by the county but apparently homeowner associations here carry some clout. It may be something you want to look into if this could affect you.

 

[Artman]

Thanks FredGarvin. I have been considering the effect on my neighbors. I am considering a ground mounted system as my roof faces the wrong way and I have a lot of land around my house. That could be an issue.

 

[russ_watters]

Well you tell us Artman - what kind of payback can you expect? Anything under 5 yrs is probably worth doing.

 

[mgb_phys]

Payback is still >10 years now.
There are a few companies that will rent you the panels and even some deals where they install an over capacity for free, sell the power back to the grid and you just pay your existing electric bill but at todays power prices guaranteed for the next 20years.
They are betting on being able to replace the panels with more efficient ones in the future or being able to sell premium 'green' power to the power companies.

The trouble is that people putting in solar panels are normaly interested in being green - so they also go around adding insulation, efficient appliances and CF lamps - then having halved their power consumption they find the panels will take 50 years to pay back!

 

[Artman]

Well you tell us Artman - what kind of payback can you expect? Anything under 5 yrs is probably worth doing.

My wife and I went to a seminar held by Home Depot on solar power. They claim that the incentives will cover 100% of the cost through the rebates, tax credit and sale of SREC's for at least $475.00 each. Above that the power saved is gravy, amounting to approximately $51,000 from a 10kWh system over 15 years (assuming price of electric to double in fifteen years). Payback should be about 5 - 6 years, I estimate because the federal tax credit will have to spread out over that long.

In NJ you can only sell back to the Electric utility 5% over-production per billing cycle, so they are pretty careful to not exceed 100% design of the solar system (except for future additions such as an electric car or converting to a heat pump from oil or gas heat, etc).

I guess what I am mostly wondering is, is there a paradigm shift coming in solar electric generation in the near future that I should wait for? Will my system be obsolete long before it pays back, if I buy now? Incentives are probably at their peak for my area right now, with bailout money funding many of the government programs.

 

[gmax137]

...These are at current market values of $680 per 1000 kWh ...

How much do you pay for a kw-hr in NJ? Is it really 68 cents?! The utility companies can buy a megawatt hour on the spot market for about $75 (or 7.5 cents per kw-hr).

I will be the first to admit ignorance on the financials of solar, but something doesn't look right in your numbers.

 

[mgb_phys]

The srecs aren't really the price of the power they are also a sort of tax - the power company only has to buy a small amount of power at these prices to make up it's 'green' requirements.
The price varies, $680 is at the top of the range for winter months - it can go down to $100 - you also don't know if the scheme will be in place next year or next president.

 

[Artman]

The srecs aren't really the price of the power they are also a sort of tax - the power company only has to buy a small amount of power at these prices to make up it's 'green' requirements.
The price varies, $680 is at the top of the range for winter months - it can go down to $100 - you also don't know if the scheme will be in place next year or next president.

I think tax or penalty for not using green energy describes the SRECs pretty well. State of NJ promises that SRECs will be available for 15 years, but there is no guarantee they will hold their value. They are a commodity and are traded as such. Yes they do swing in price, but they can be held for a couple of years and some brokers will lock in an average rate of say $475 over several years hoping to cash in by selling them when they are high. I was told other states are beginning to buy these as well, NJ residents can register to sell theirs in these other states. I think it costs the government very little to issue these, so there is a good chance they will be available the full 15 years.

Electric charges in my area are about 15 cents per kWh, but expected to double within the next 5 years.

 

[russ_watters]

My wife and I went to a seminar held by Home Depot on solar power. They claim that the incentives will cover 100% of the cost through the rebates, tax credit and sale of SREC's for at least $475.00 each. Above that the power saved is gravy, amounting to approximately $51,000 from a 10kWh system over 15 years (assuming price of electric to double in fifteen years). Payback should be about 5 - 6 years, I estimate because the federal tax credit will have to spread out over that long.

Considering all the incentives you listed, I'm surprised it is that bad. But if that includes covering it with a home equity loan, it might be worth doing. But considering the condition that the US economy is in right now, a better place for your money over those 5 years is probably the stock market, though obviously the risk is greater. However:

I guess what I am mostly wondering is, is there a paradigm shift coming in solar electric generation in the near future that I should wait for? Will my system be obsolete long before it pays back, if I buy now? Incentives are probably at their peak for my area right now, with bailout money funding many of the government programs.

No, you shouldn't expect a major revolution in solar technology in the near future. Enough money has been spent in researching it over enough time that it just doesn't seem likely to me that something obvious has been missed.

But the more important question is probably the political one: can you expect those incentives to get better or worse over the next few years? And that's a difficult question. With a democratic president and congress, you can expect them to be friendly toward such things for a while. For NJ, I don't know your politics or budget situation, so I can't help you there...

But it is important to remember that right now residential solar is such a small potatoes energy concept that the government can afford to throw absurd amounts of money at it without many people realizing how rediculous it is to do that. If a lot of people start to take advantage of this, I think people will start to realize just how bad the return on investment is for the government and these incentives will go away. So you may want to consider how long these incentives will actually be around and get while the gettin's good.

 

[russ_watters]

I've been looking over your numbers...

Feds are giving 30% tax credit (approximately $18,000 after state rebate is subtracted)...

Sounds about right to me.

(a system can produce electricity 6.5 hours a day in my area so 10 kWh will produce about 23 SRECs a year or about $15,640 a year at current market value).

That sounds high to me. What is the 6.5 hours based on? Is this a single axis tracking system? I would expect an average of about half that if it isn't due to the angle of the sun varying and clouds.

Anyway, continuing, I get a capital cost of $44,500 for an $80k system minus those first two incentives. Then subtracting the SREC at your rate gives a payback of just under 3 years, not including the energy you generate. So it doesn't sound to me like you've actually run the numbers. You really need to if you want to be able to make an educated decision here. And you really need to include the energy generated, since that is a big part of the benefit! It is also critical for sizing the system. Start by checking your electric bills and seeing both how much energy you use per year and what the summer and winter usage is. You probably want to size the system at around 50-75% of your summer months peak (I'm assuming you are going to use storage to cover you at night). If you produce/use 10,000 kWh per year, that's about $1500/yr.

Anyway, the SREC number is the critical number here. If it really is that high (and does that get bought every year at that year's market rate?), this is a rediculously good mid-term investment. Including the energy produced, you get your $44,500 investment back in 2.5 years and have it doubled after 5...$125k profit after 10 years, and $210 k after 15. That's an average of a 32% profit per year over 15 years. Note that since the return is constant dollars per year and not constant percentage per year, it doesn't compound like interest and so loses ground to an interest based investment - but over 15 years, that's extremely good.

If you're financing it with a home equity loan, of course, you'll need to subtract that from the return.

If the SREC is half what you think, the payback is about 5 years.

 

[Artman]

That sounds high to me. What is the 6.5 hours based on? Is this a single axis tracking system? I would expect an average of about half that if it isn't due to the angle of the sun varying and clouds.

Thanks Russ, You're right, my SREC's number was too high. The 6.5 is the approximate number of hours that a fixed South facing solar panel will produce a high percentage of output at my latitude. This number is available on several websites, I think it is pretty accurate and even a little conservative. I have a large open field where the panels are planned to be, but they are still talking about removing some trees to get better unobstructed light.

I tallied my electric bills yesterday for the year and we used around 11,000 kWh, that would be 11 SREC's, now at 680 apiece that that would be more than 600 per month, which should cover the payments on the loan, then we pocket the electric bill money saved (or more likely kick it back into paying off the investment as soon as possible.

The sales people have been saying things like "a conservative return of $50,000 profit over 15 years," "make $3 for every $1 spent over the life of the system," "pocket $90 per month after all incentives."

Thanks everyone for your responses. I appreciate the thoughts. It is a very large investment.

 

[Artman]

Well, we're signed up. We will be installing an 8.8 Kw ground mounted panel grid system made of 40 panels rated at 220 watts per panel. Payback is estimated at 5-10 years (there are a lot of variables, hours of direct sunlight, SREC prices, rising cost of electricity, availability of taxable income to take as credit). It should be online by November 30th. I'll let you know more later.

 

[russ_watters]

Congrats. That's a neat project. Keep us informed about how it works out. Does the system include any type of monitoring that will tell you total kWh generated and differentiate it from kWh from the grid for consumption in your house? If so, by June 21st of next year (after 6 full months of generation, covering every conceivable sun angle), you'll be able to pin down your payback almost exactly.

 

[mheslep]

...

Electric charges in my area are about 15 cents per kWh, but expected to double within the next 5 years.

Wow, double? That's aleady 50% above the national average at 15. Any idea about the main reasons for such an increase in NJ? EIA shows NJ is half old nuclear (that is, bought and paid for). Oyster creek is old but small. Then there's 16% coal, 31% gas, and there's a large gas glut now.
http://www.eia.doe.gov/cneaf/nuclear/page/at_a_glance/states/statesnj.html
This must be due to some governmental regulation or tax interference if true.

 

[Topher925]

Well, we're signed up. We will be installing an 8.8 Kw ground mounted panel grid system made of 40 panels rated at 220 watts per panel. Payback is estimated at 5-10 years (there are a lot of variables, hours of direct sunlight, SREC prices, rising cost of electricity, availability of taxable income to take as credit). It should be online by November 30th. I'll let you know more later.

Make sure you check with your electric company to see if they support sharing. The way it works out here is that for every kwh you put in, you can take a kwh out free of charge. Unless of course you have a surplus of power for a month, then the power company will only give you something like 2 cents per kwh you supply.

My university has solar powered apartments that were built almost 10 years ago I guess and from what I hear they have almost paid for themselves.

 

[russ_watters]

Wow, double? That's aleady 50% above the national average at 15.

It is often said in the media that the removal of rate caps will cause the rate to double, but what might double is just the generation portion of the rate, which accounts for perhaps 30% of the total. So it is more likely that rates for states where rate caps are about to come off would go up by 30%...

...but no one really knows just what's going to happen.

[edit] Wait, have rate caps already come off in NJ? This link implies they have: http://www.mwn.com/files/FileControl/fb610dc7-4655-4e58-b89c-9edccee9eace/7483b893-e478-44a4-8fed-f49aa917d8cf/Presentation/File/RATE%20CAP%20FAQ.pdf

If they have and the increase has already been seen (which would explain why they are already so high), and future rate increases won't be as dramatic.

 

[ktech311]

Artman--- You are correct inn that your SREC numbers are way too high. Look to the OCE's website on the 8 year legislated schedule of SREC values based upon the Solar Alternative Compliance Penalty. Currently SREC ceiling are set to go down 3%/year---There is currently a shortfall in the RPS standard which should be made up for in the next few years. When we quote customers we use 500-511 for the next 8 years which is the weighted average. There are also a number of securitization efforts going on and we have been pushing our LSE's to commit to long term contracts at halfway decent numbers.

For SREC gen you can use a multiplier of 1.1-1.2 on the total KW of your system.

For reporting your inverter should have reporting capability but there are also aftermarket services that provide web based reporting for additional cost.

As the first company to be approved by the OCE back in 98' we have provided design and installation for 5-10% of all systems in NJ. This is a great time to go solar.

On a side note I'm pretty confident that HDs numbers are pretty high. I hope you got a couple quotes. They also 100% subcontract.

Any questions let me know.

Thanks Russ, You're right, my SREC's number was too high. The 6.5 is the approximate number of hours that a fixed South facing solar panel will produce a high percentage of output at my latitude. This number is available on several websites, I think it is pretty accurate and even a little conservative. I have a large open field where the panels are planned to be, but they are still talking about removing some trees to get better unobstructed light.

I tallied my electric bills yesterday for the year and we used around 11,000 kWh, that would be 11 SREC's, now at 680 apiece that that would be more than 600 per month, which should cover the payments on the loan, then we pocket the electric bill money saved (or more likely kick it back into paying off the investment as soon as possible.

The sales people have been saying things like "a conservative return of $50,000 profit over 15 years," "make $3 for every $1 spent over the life of the system," "pocket $90 per month after all incentives."

Thanks everyone for your responses. I appreciate the thoughts. It is a very large investment.

 

[ktech311]

Energy Year SACP (SREC ceiling price)
2009 $711
2010 $693
2011 $675
2012 $658
2013 $641
2014 $625
2015 $609
2016 $594

My state (NJ) is offering rebates of $1.75 per solar watt installed up to 10000 watts ($17,500 max) Feds are giving 30% tax credit (approximately $18,000 after state rebate is subtracted), utilities in NJ are forced to purchase SRECs to show they are complying with regulations to use green energy sources. These are at current market values of $680 per 1000 kWh solar electricity produced they will be issued for 15 years (a system can produce electricity 6.5 hours a day in my area so 10 kWh will produce about 23 SRECs a year or about $15,640 a year at current market value). Solar is a home improvement that is exempt from property taxes in my state. All the incentives add up to paying off the investment in just a few years not even counting the electricity saved.

My wife and I are considering installing a grid tied system of somewhere between 6.5 and 10 kW (cost will probably be between $60,000 and $80,000). What do you think, is now a good time to go solar?

 

[Artman]

mheslep, The reason for doubling in five years is that the electric utilities facilities in NJ are nearing their capacity for production of electricity, unless they expand by building new generating plants they will have to purchase electricity from other sources, either scenario could raise prices quite a bit.

Russ, our system is supposed to have a real time meter on the solar to tell us our production and a connection to the installer to let them know if there is a drop in production so they can check it.

ktech311, thanks for checking in. Yes, they have all used a figure of $475 for calculating the SRECs value. I think the price is a little high because we are a ground mount system, about a hundred feet of trenching is required, and we need five large trees taken down. They are going to use Schott Solar 220 watt panels, which seem pretty nice from what I read. They told us we could expect higher than rated production that is part of the reason for the meter, we can give exact numbers for SRECs based on actual production. Our installer suggested we find a decent long term price for the SRECs and lock in. I like that idea as well. I suspect as more people go solar this value will drop.

Thanks for replies all.

 

[Artman]

Just in our local news last night was a fight that is going to court because a homeowner purchased solar cells but his subdivision association won't let him put them up. He already has permission by the county but apparently homeowner associations here carry some clout. It may be something you want to look into if this could affect you.

I asked our contractor about this. He said in NJ there are laws protecting our right to use solar energy, but he said they will check with the local officials as well.

Topher925, it is my understanding that in NJ, because of the SRECs, the utilities are only required to purchase 1 kwh to 1 kwh plus about 5% overproduction at regular rates. Beyond that they pay nothing for any overproduction. So the idea is to size the systems as close as possible or slightly below the annual electric load. Ours was sized slightly below (about $11 a month worth at current electric rates), with hope we can conserve the difference or the system will produce better than expected.

 

[Artman]

The project is almost finished. Construction is complete and the system is functional, but we're now waiting for Local then State inspections.

It's been a long time coming (August till now). The array is huge, 56 feet long 12 feet high diagonally, 4 rows of 10 columns for a total of 40 panels at 220 watts each. We had to have about twenty trees removed because our local codes require 30 feet of setback from property lines, which moved us up into shade from several of our large trees. Rain put us back about two weeks because our tree removal service kept getting their equipment stuck.

 

[mheslep]

Artman - So you used Home Depot for the install?

I see Lowes is selling do-it-yourself panels now along w/ everything needed: integrated racking, wiring and grounding.
http://www.sustainablebusiness.com/index.cfm/go/news.display/id/19397

 

[dlgoff]

The project is almost finished. Construction is complete and the system is functional, but we're now waiting for Local then State inspections.

Thanks for the update. Let us know when you start generating to give us an idea of how well it's doing.

 

[Brian_C]

I wouldn't invest in anything right now.

 

[minger]

Very cool. Pictures?

 

[Artman]

Artman - So you used Home Depot for the install?

I see Lowes is selling do-it-yourself panels now along w/ everything needed: integrated racking, wiring and grounding.
http://www.sustainablebusiness.com/index.cfm/go/news.display/id/19397

No, I didn't use Home Depot. I found they were not competitive in either price, quality or service. Among other things, I was told they charge for the solar survey, which other contractors do for free.

I considered the do it yourself option and I am fairly sure I could have managed the tasks involved, but I think in order for me to qualify for State rebate and certificate programs, the installation has to be performed (or at least certified) by a licensed professional.

I used a company that was just starting into the field. I've been very happy so far with their staff and their work. The two owners of the company are a Mechanical engineer who used to work on submarines and his brother who is a CPA. They seem very good at the design and describing the financial benefits and they are a branch of a plumbing and heating outfit that has been in business forty some years.

Brian_C, oops. Now you tell me. It's in now. Time for it to start paying back.

 

[concaveup]

I don't live in NJ, but I hear that http://www.getsolar.com/new-jersey-solar-power-panel-installation-professionals.php" power has one of the most progressive incentive plans in the US. Personally I'm not sure about investing in solar right now. But if you have calculated it to return in 10 years, and already have funds available I think it could be a good idea to save on energy prices when they go up. I would just make sure that you can sell your excess energy back to the grid at least for the 10 years to breakeven. If you want to install solar panels, there are breakthroughs coming, but the technology hasn't actually changed much in decades. I wouldn't count on new panels coming out any time soon. Of course you risk that they might come out, but you can't be sure. Like the phrase goes, "the best time to plant a tree is twenty years ago, the second best time is now." I think the same applies to solar panels, except maybe 10 years. If you installed them 10 years ago you might be getting free energy already.

 

[jtesttubes]

US government is giving some benefits to those people who use solar energy. I have not decided on it, but sure in another 5 year yes i might go for solar energy.

 

[Artman]

Latest update is that the local inspector has passed the system. This was the technical inspection. The state interest is more in bookkeeping. It waits until after the local inspector has passed the system, then they just look to see that it was installed and write down serial numbers and performance data from the installed equipment. The state is mainly looking to see that it is not a fake installation designed to collect SREC certificates without producing electricity, or that it is duplicating installation details from another location (the State is looking that there is no evidence of fraud).

I don't live in NJ, but I hear that http://www.getsolar.com/new-jersey-solar-power-panel-installation-professionals.php" power has one of the most progressive incentive plans in the US. Personally I'm not sure about investing in solar right now. But if you have calculated it to return in 10 years, and already have funds available I think it could be a good idea to save on energy prices when they go up. I would just make sure that you can sell your excess energy back to the grid at least for the 10 years to breakeven. If you want to install solar panels, there are breakthroughs coming, but the technology hasn't actually changed much in decades. I wouldn't count on new panels coming out any time soon. Of course you risk that they might come out, but you can't be sure. Like the phrase goes, "the best time to plant a tree is twenty years ago, the second best time is now." I think the same applies to solar panels, except maybe 10 years. If you installed them 10 years ago you might be getting free energy already.

SRECs are supposed to be available for at least the next 15 years. That is the maximum projected payback, more likely 10 or less years, with a good SREC rate. Also, I want to install a heat pump to allow me to heat my house with electricity through much of the winter. I am going to have a State energy audit performed. If the audit suggests a heat pump be installed I can get half of the cost of a heat pump rebated to me from NJ. This can decrease my payback period by reducing my fuel oil consumption.

The reason I invested now are all the incentives are so high from state and federal governments and utilities through SRECs, rebates and tax credits. Payback through electrical savings alone would be in excess of 30 years for my system, depending on the rise in cost of electricity and that would not have been practical.

 

[markjkirk]

PSEG launched a new loan program .. Solar Loan II .. here is an interview with the Program Lead, Andres Salas, at http://solarpanelreporter.com/public-utility-interviews/pseg-solar-loan-program-lead-andres-salas" where he gets into the specifics of what makes their program useful for private and commercial projects.

Also key is a link in that article that goes straight to their complete Solar Developer package. That has the present NJ SREC rates and shows what PSEG SREC rates are going to be in the coming years. - the link is in the article at SolarPanelReporter.com - above

What I like best was that they work through a homeowner solar panel project example and a medium sized commercial solar panel installation with (what looked like) fairly realistic costs and revenues.

They make a strong case for investing as early as possible. But then again, it is their own business interest to make those loans.

 

[Artman]

Yeah!

Threw the switch on Thursday the 21st! We are harvesting solar electric power now.

The state inspector took a good look at the project and was very impressed with the quality of materials and workmanship. He said our installers used top shelf equipment even where other installers frequently might skimp. Such as metal for backer boards instead of pressure treated wood, lightning arresters, and temperature sensors on the panels where they are not required, but make a better job.

So far we've had some cloudy weather, but on a couple of nice sunny days it has produced admirably at about 7200 watts at the inverter at almost 12 noon, about 81.8% of its 8800 watt rated capacity and so far about 27 kwh per day average.

 

[mheslep]

at almost 12 noon, about 81.8% of its 8800 watt rated capacity ...

That's 82% at noon on 21 January, a month from the Winter solstice. No doubt it will improve substantially later in the year.

 

[dlgoff]

Yeah!

Threw the switch on Thursday the 21st! We are harvesting solar electric power now.

The state inspector took a good look at the project and was very impressed with the quality of materials and workmanship. He said our installers used top shelf equipment even where other installers frequently might skimp. Such as metal for backer boards instead of pressure treated wood, lightning arresters, and temperature sensors on the panels where they are not required, but make a better job.

So far we've had some cloudy weather, but on a couple of nice sunny days it has produced admirably at about 7200 watts at the inverter at almost 12 noon, about 81.8% of its 8800 watt rated capacity and so far about 27 kwh per day average.

Outstanding. Keep the data coming.

 

[Artman]

That's 82% at noon on 21 January, a month from the Winter solstice. No doubt it will improve substantially later in the year.

Thought I would post the effect of snow on the ground in front of our ground mount solar array. The panels were clear of snow, there was a solid layer of 3"-4" of snow on the ground in front of them creating a nice reflective surface, and the sky was sunny, pretty much cloudless. The 8800 watt system produced 8200 watts (measured by the inverter) at 1:30. That's 93.2% efficient under those conditions. I wasn't able to check it at noon, but I'll bet it was nearly 100% because the system produced a total of 43 kwh during its operation that day. The snow seemed to help because the following day was equally sunny, but some of the snow had melted off the ground in front of the panels and they only produced a total 39 kwh (still, not bad for middle of winter). I think the wattage was around 7800 at 1:00 that next day.

 

[mheslep]

Thought I would post the effect of snow on the ground in front of our ground mount solar array. The panels were clear of snow, there was a solid layer of 3"-4" of snow on the ground in front of them creating a nice reflective surface, and the sky was sunny, pretty much cloudless. The 8800 watt system produced 8200 watts (measured by the inverter) at 1:30. That's 93.2% efficient under those conditions. I wasn't able to check it at noon, but I'll bet it was nearly 100% because the system produced a total of 43 kwh during its operation that day. The snow seemed to help because the following day was equally sunny, but some of the snow had melted off the ground in front of the panels and they only produced a total 39 kwh (still, not bad for middle of winter). I think the wattage was around 7800 at 1:00 that next day.

It might be interesting to hook up an instantaneous amp meter, ie a scope with a current probe. I read that the power can vary substantially second to second on partially cloudy days, or due to bird and aircraft overflights, and that fast variation at larger scales can be a problem for grid operators.

 

[mgb_phys]

(still, not bad for middle of winter).

The panels are more efficient when they are cold - not sure how much difference there is summer-winter but it all helps

 

[mheslep]

Just so
http://www.solarpower2day.net/images/9t.png

 

[Artman]

It might be interesting to hook up an instantaneous amp meter, ie a scope with a current probe. I read that the power can vary substantially second to second on partially cloudy days, or due to bird and aircraft overflights, and that fast variation at larger scales can be a problem for grid operators.

We're getting an instantaneous meter as part of the package. The installer is contracted to monitor through the internet to see if there is a problem and we can monitor also. Not sure if it can do trending, or if I just have to log in and check it out from time to time. They are supposed to put it in next week.

 

[dr dodge]

so, with install, solar panels and controls and gound construction, what the total cost?
sounds like its putting out some nice power
good job in doing what many only talk about

jr

 

[Artman]

The latest development is that the installer came to put in a real time monitor yesterday. It took a few hours for us, and a service tech, to discover that MAC filtering on my network was blocking the signal from reaching their server. Got it straightened out and now I can monitor my solar output from any computer with internet capability.

so, with install, solar panels and controls and gound construction, what the total cost?
sounds like its putting out some nice power
good job in doing what many only talk about

jr

Installed price $74,020
NJ Buy down rebate -$15,400
Subtotal $58,620

Permit fees $500
Subtotal $59,120

Federal Tax credit -$17,736
Total $41,384

Sounds like a lot left, but with an estimated savings from electricity production, SREC sales, the payback should be less than ten years, with near zero cash outlay to make the payments. Also, it's a nontaxable $74,000 increased value improvement to my property.

 

[russ_watters]

Taking a swag at your energy savings, if you get 43 kWh on a sunny winter day, you'll probably get more like 80 on a sunny summer day. Figure though a 60 average and 60% clearness, you get 13,140 kWh per year. What's your all-up energy cost? $.15 / kwh? At that, you save $1971 per year (can you sell excess back to the grid at the same price?). How much money will you get for SRECs?

 

[rewebster]

sounds great artman--I'd love to do the same


I wouldn't doubt that they'll be even more state and federal tax credits in the future, and it may even come to pass that putting solar panels up may be a requirement someday

 

[mheslep]

Yes the excess sales to the grid must be part of this plan, no? Otherwise it sounds like you have too much panel at ~8kW, $74k.

 

[Artman]

What's your all-up energy cost? $.15 / kwh? At that, you save $1971 per year (can you sell excess back to the grid at the same price?). How much money will you get for SRECs?

Average all-up cost is about $.15 to $.17/kwh.

We can sell excess of about 5%. We have a new digital net meter on the house, so far we haven't caught up to our night/cloudy day usage because of all the cloudy days, but I think we will if given a few clear days in a row.

We should get 11 or 12 SRECs a year they are currently selling for around $670 each. We may try and lock into a lower long term deal for a guaranteed rate of about $500 each for a contract period of several years, if we can find a buyer. I think the Life Cycle Cost analysis was based on only $460 per SREC for 10 year payback at 11 SRECs per year.

 

[Naty1]

great discussion...I looked into this about six months ago...and decided the payback looked like it would be too long...8 or 10 years...but a lot depends on assumptions and actual performance.

Good to see your electrical production is robust...when I looked into a few solar panels for use aboard my boat, perhaps six or eight years ago, the assumptions were ridicuously optimistic and the investment not even worth considering...at that time unicellular panels were the most efficient and most expensive...that's perhaps more important where space restrictions are really limited.

Glad to see solar now makes marginal sense, but not glad that my tax dollars are supporting application of an inefficient and uneconomical technology...

good luck with all your efforts!

 

[mheslep]

Average all-up cost is about $.15 to $.17/kwh...

What, that is the rate you sell energy to the utility, or your internal expected rate amortizing the $42k out of pocket?

 

[russ_watters]

That's the cost of buying a kWh from the electric company. He didn't say what he can sell them for...

 

[russ_watters]

We should get 11 or 12 SRECs a year they are currently selling for around $670 each. We may try and lock into a lower long term deal for a guaranteed rate of about $500 each for a contract period of several years, if we can find a buyer. I think the Life Cycle Cost analysis was based on only $460 per SREC for 10 year payback at 11 SRECs per year.

12*$670= $8040
$8040+$1971=$10,011
$41,384/$10,0011 = 4.1 years

If that's what it really works out to, 4.1 years is an excellent payback.

Gotto admit though, I really don't understand the logic behind SRECs. From the wiki, it sounds like the point is to have electric companies subsidize private solar production by paying them 4x what the power is worth just for producing the power (ie, not actually buying the power). That seems like bad economics to me, but they are a great deal for you.

 

[Artman]

Glad to see solar now makes marginal sense, but not glad that my tax dollars are supporting application of an inefficient and uneconomical technology...

Actually, each year it will reduce greenhouse gases equivalent to those generated running a car for 19,000 miles, the efficiency approaches 100% of rated capacity on a very sunny day, placing it well over many forms of power plant electrical production efficiencies And the panels will continue to create electricity from sunlight for the next 20-40 years with only some additional maintenance to the inverter.

As a use of stimulus money, it begins by putting the money in the hands of those who will use it, myself, my contractors, their employees, the local bank that financed the project, their employees, the solar component companies, and if enough people take advantage of the opportunity, it will prolong the time till there is a need for increased power utility infrastructure.

Or, you could give the stimulus money to wall street and see how much works it's way down to the people.

Russ, as far as I know, I can sell the excess kwh for what I buy it for in NJ up to 5% overproduction.