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Sunday, January 27, 2013

PA Electricity Price review wrt. Solar

Thought I'd throw this together to show that electric rates in our area are actually decreasing.
Here are the variable amounts from our bill for some prior months going back to 02/2011.

02/08/11 (reading date)
Generation Charges 1,283 kWh X $0.09070 116.37
Alt. Energy Portfolio Standard 1,283 kWh X 0.00120 1.54
Transmission Charges 1,283 kWh X 0.00730 9.37
Distribution Charges 1,283 kWh X 0.05960 76.47
0.1588/kWh

09/08/11 - higher summer rates
Generation Charges 500 kWh X $0.09550 47.75
Generation Charges 1,595 kWh X 0.10820 172.58
Alt. Energy Portfolio Standard 2,095 kWh X 0.00140 2.93
Transmission Charges 2,095 kWh X 0.00730 15.29
Distribution Charges 2,095 kWh X 0.05960 124.86
0.1734/kWh

01/09/12
Generation Charges 1,404 kWh X $0.09180 128.89
Transmission Charges 1,404 kWh X 0.00740 10.39
Distribution Charges 1,404 kWh X 0.06000 84.24
0.1592/kWh

09/05/12 - higher summer rates
Generation Charges 500 kWh X $0.07830 39.15
Generation Charges 1,831 kWh X 0.08360 153.07
Alt. Energy Portfolio Standard 2,331 kWh X 0.00070 1.63
Transmission Charges 2,331 kWh X 0.00740 17.25
Distribution Charges 2,331 kWh X 0.06000 139.86
0.1505/kWh - far cheaper than prior year

We commissioned our Solar PV array on 12/15/2012
(a lot of clouds since this date)
The real benefit will begin next month with a full month of
production, no impact by the two test dates where I produced
75 kWh and got billed for it in this bill.

01/08/13
Generation Charges 1,134 kWh X $0.07660 86.86
Alt. Energy Portfolio Standard 1,134 kWh X 0.00070 0.79
Transmission Charges 1,134 kWh X 0.00960 10.89
Distribution Charges 1,134 kWh X 0.06190 70.19
0.1488/kWh


The .1488 is the cheapest I've paid for electricity in years. I have a graph going back to 2007 which showed rates as high as .176/kWh. Back then, into 2009/2010, there was a lot of incentive by the PA Sunshine Program to incent Solar PV installations. And SRECs were "higher" then at $300/ea. So, a variety of solar installers were busy back then.

PA has Generator competition now and the big issue is that the competition lowers their comparable Generation Charges.
What our PECO electric POCO does is lowers the Generation charges and then increases Distribution Charges. They charge Dist. for
the competitive Generators and as such, they'll recoup customer loss who shopped-around by charging an ever-increasing Dist. charge for controlling the wires.

Generation charges dropping is due to increased use of Natural Gas at a cheaper rate. It is also synthetic due to the increased Distribution charges.

Conclusion - cheaper rates now in January, 2013 than 2012 and 2011.

But how long will cheaper rates last?

I don't know if other states where Solar PV installs are being done more (CA, NJ, LA, AZ, NM, etc.) but in PA, the future of solar installations really lies in large commercial installs and not much in terms of homeowners. Our rates from PECO are higher than nearby counties (as much as 50% more than Lancaster County with PP&L). This could reverse but takes a lot of effort on the part of the electric POCOs to request rate increases through the state energy commissions. Solar installs in PA will wane for residential arrays due to no more state incentive available. The only way to really sell solar to residential owners in PA will be to find those with the personal incentive to do a project. There may be more and more DIY installs going on out there where people buy product themselves and use an electrician to do the installation. Seems to me that if someone is considering purchase of a system and would be even taking out a HELOC or other type of loan to do it - really think about doing a lease program rather than purchase. At least you don't have to pay interest on a loan to pay for the system that would have a long payback period like here in PA.

Example of how to look at this economically. If you put in an $8KW system for $35K and pay cash, your ROI is about 12 years in PA (not including inverter replacement). If you instead put $35K into a High Yield corporate bond fund that has an annual return of 10%, you are up to $38.5K after one year. Do that for 10 years, with an average return of 7%, you will have $68K. After 12 years when solar has finally reached ROI, you then are saving perhaps $4K per year on the electric bill. But you will be making $6K on the investment. We don't know how the economy will be doing in 10 years - and what the power costs will be then. But we are pretty sure in PA that electric rates won't double in 12 years unless laws and legislation are enacted to increase costs. Returns on investments are also of some risk. Yes, the negative to the investing is you pay taxes on your gains. Fine - we all know that is to be accounted for. Let's say you make a net 5% per year on the investment. After 12 years, you have $62K. Investing has a compounding factor if you re-invest dividends while you don't get compounding with solar PV, you get .5% lower production per year.

Solar PV usually won't save you money - you can do far better in the stock market with proper investing. There is risk in doing either and of course, living efficiently and conservation are even cheaper to perform and payback is immediate. Why did I install a Solar PV array? For the life experience, because I'm interested in the technology, for the slight chance electric prices go up some day. I don't have plans to do any batteries or any kind of "prepping". But I think it's cool technology. I wouldn't have done it without the federal tax credit. We don't expect to see any SREC incentives of any value available for years, either.

With lower electric prices now from the POCO(s) and with flat or perhaps ever-increasing gasoline prices, this is a good time to consider electric cars going forward. With leases such as the new 2013 Nissan Leaf at $199/mo, commuters have an opportunity to save dollars switching to electricity for their auto fuel and that can save more per year than a Solar PV system would. Do both if you can afford it and could take advantage of the tax credits that are avaiable to you (not for leasing an EV, just for purchase). If you believe in this political banter about "North American Energy Independence by <some random year>" then this is one way to participate.

Tuesday, January 22, 2013

Philadelphia Car Show 2013

The Philadelphia Auto Show - through 1/27/2013

I spent an hour and a half at the Philadelphia car show on Monday, 1/21/2013.  It was much like the 2012 car show when it came to electric vehicles.  A few more models to look at but a whole lot missing this year.  I was going to drive down to the show with my son and park at a parking garage which stated it had one Chargepoint L2 charger but the price to park would have been $25 plus the 90 miles round trip.  Instead we paid $1 to park and $22 for two round-trip tickets on the regional light rail.  Saving the 70 or so odometer miles and hassles of driving while using public transit is a good thing in my book.  I'm sure the charger would have been available at the lot as not much public charging activity happens in Philadelphia.

The car show starts off with a whole sub-floor of the DUB collections and customized rides.  I'm not really into that so I skipped taking pictures of that area.

For EVs, to sum it up - only about 8 actual models of available plug in vehicles were on display.
- Chevrolet Volt
- Fisker Karma
- Ford Focus EV
- Ford C-Max Energi
- Ford Fusion Energi
- Mitsubishi i-MiEV
- Nissan Leaf
- Prius Plug-in
- Volvo CUV (concept)

What was missing:
- BMW Active-E, or new i-models
- Cadillac ELR
- Fiat 500 E
- Tesla Motors
- Via Motors

Impressive 1921 Milburn Electric car in the classic car section.




On to what we can actually buy.

Ford was in the center of the big room and had a good spread.  The plug-ins were all in a central circle together for easy access.

Ford had the best "electric" visuals on hand.  They had an Energi engine taken-apart for viewing of the connection between the 4-cyclinder and the electric motor.

Volvo prototype of a plug-in hybrid CUV.

Ford Fusion Energi

Ford C-Max Energy engine/motor combo:

Ford Focus EV motor:

C-Max Energy trunk-space.  Not much when compared to the Volt.  The reason appears to be due to the battery placed behind the rear seat.  This offers the 5th passenger seat.


 Chevy Volts were sort of pushed off to the side, near the left-most wall of the entire convention center.  There was some traffic around the two (red and blue).  They should have had a white one in between.


Here's a Nissan Leaf sitting next to a nice black Nissan GT-R.  The GT-R was getting twice the attention of the Leaf.  The Leaf rep was saying the Leaf gets 100 miles per charge.  Not good as the window sticker states 73-miles per charge.

The auto show had limited EVs.  Now, what do people really want to see?  Here is a group around the Ford Raptor dual-duty truck.  Lots of interested kids and adults:


Dodge/Chrysler/Jeep have no plug-ins at the show (nor available at all).  People lined up to ride the Jeep course up and simulated hill and over the simulated bumps.  As Jon Stewart says people want to buy the truck to pull the boat they don't have to the lake they don't go to.

What did most people look at?  The Porches, Jaguars, Mercedes, and these two popular cars.  Based on the people lined up wanting to sit in the Porche, Jaguar and other high-end cars - these companies should do fantastically in 2013!! :)  Actually, yes, this is the oogle factor where 99% of those sitting in these expensive performance cars are only dreaming of taking them for a spin.

Big lines to sit in some of the USA-built Corvettes and the Canadian-built Camaros:

The star of the show really is this.  The Lexus LF-LC - Lexus Future - Luxury Coupe
This is a design for a 500-hp hybrid concept which really is a head-turner.



Ok - what lies ahead for the gasoline car culture?  The immediate issue is "will gasoline prices go up sooner or later?"

Let's review this for now.  The rate of growth over the last three months show that WTI oil is rising faster than Brent Crude oil.  WTI is used for the midwestern gasoline products and for exports from the Gulf refineries.  We are said to be producing more oil in the USA.  Doesn't help at all with lowering oil prices.  Brent Crude is imported and is used at the East and West Coast refineries.

Let's come back to the oil price charts in a year and see how things are doing after 2013 closes out.


The real lack of interest of car companies to pursue a strong marketing campaign for plug-in EVs is showing that both car firms and buyers are not showing a high interest in EVs compared to all the other cars that have powerful engines and flashy curves.  Buyers were looking at the EVs but how they spoke of them sounded to lack real interest and of more novelty.  I did see a family of five looking at the Volt...

I didn't really enjoy the car show this year very much.  I was hoping to see more activity for plug-ins and it was lack-luster.  My real hope is that we continue to see better sales that lead to a doubling of the 2012 unit-sales of plug-in models and renewed interest in plug-ins helped by Ford, BMW and others.  We will see changes in 2013 too with some predictions of mine.  I believe that Coda closes their doors in the USA.  Fisker comes very close to closing their doors as well.  Ford will become the plug-in sales leader of 2013 with the Energi and Focus EV models combined versus the GM plug-ins of Volt + ELR.  Volt will sell about 130% of the units of 2012 while ELR will sell about 2,500 units.  I think this is due to the lack of serious leadership to get dealerships on board other than the high-volume dealerships.  People will hear more about the 2014 Volt and start to consider waiting for that model to come out rather than going for a 2012 or 2013 model.  Oh yeah, Toyota will continue to sell the Plug-in Prius well.  I don't know why someone would want between 6-11 miles of electric power that may still use the engine during acceleration.  But they will sell in the 1,000-1,500 per month range.

Like the Philadelphia Auto Show catch-phrase this year says:  Find Your Vroom!   People want engines and noisy exhaust.  They are really not ready for plug-in vehicles in a large scale.  At all.  It may take the children of the current generation to catch onto plug-ins.  I saw a nice young girl being guided by her mom to sit in the Nissan Leaf.  It looked like they both were enjoying it.  Maybe that girl will drive an EV as her first car and perhaps as her only type of vehicle as she grows up.

Monday, December 31, 2012

Snow load on Solar PV and max output

Here's how Snow can impact Solar PV production.




Inverters show that on a good day, they can produce their rated maximum of right about 4000W each.  This happens on cold days with good sun or even with some edge of cloud effect.


They have produced more peak power (Ppk) than the numbers shown above - about 4011 and 4012 for the individual inverters on colder January days.

Saturday, December 22, 2012

Solar PV Project

The shed was in for a few weeks and then it was time to do the Solar PV Project.

The idea to "go solar" comes from an intererest to both cut our electric bill (PECO charges about 16-17c per kWh in SE PA) and to help fuel the Chevrolet Volt we purchased in summer of 2012.  With a clear sky and southern exposure, the backside of the shed was always to be used for this Solar project.  Rather than a ground-mount for the entire Solar PV array, we went with a 1/2 roof and 1/2 ground solution.

In August, 2012, we started to choose the equipment.  I did want to use USA-made components and not choose items imported from other countries.  Our nation needs continued jobs and I felt it would be best to pay the premium for the locally-made products.  Saving $1-2K on the project wasn't worth the mindset of not supporting our nation.  My kids may, some day, work in an industry that we support and carry forward now.

First negative was that my township charged a permit fee based on per square-foot of the array.  The shed's permit was $25 and the solar permit was over $270.  They randomly chose to use .50/sqft for the permitting fee.  It seems they are gouging those who are putting in "one of them there fancy-dancy solar things".  There is national movement to try to make permitting of solar installations smoother and lower-fee to incent more people to do installs.

On to the Solar PV setup.  Total peak power capacity is 8.16KW based on the module numbers.  Maximum output is roughly 8.0KW when the inverters hit their maximum AC power.  Over time, modules will degrade and will not hit these maximums but for the first few years, I hope we can hit the 8.0KW peak output on many good sun days.

This system is a 32-module array - actually two 16 module arrays - made up of

- 32 SolarWorld SW 255 Mono-crystalline Version 2.0 panels.  Each can make up to 255W of peak power.
- 2 PowerOne Aurora PVI-3.6 inverters
- Schletter ground-mount racking
- Pro Solar roof racking

Step 1 - Install the modules on the roof.  That's Misty, the miniature poodle wondering when the rabbit will come out from under the shed. The rabbit moved from under the old shed to this new one quickly.

Step 2 - reviewing the installation, the cable combiner box really wasn't right on the roof.  This is to be removed and wires rerouted.  Don't put up with installation steps which can be done better.

Step 3 - with combiner box now removed and roof-mounting cut down, the team adds the ground mount modules.

You will also notice the lower array is positioned over the grass area.  The guys did come back and pushed the whole array back, using jacks, so that the lower edge is behind the wooden border.  I have to say the installation team was very helpful in making everything right.
Roof rack angle is 39* and ground mount angle is 35*.  Since they are not tiltable, they may not produce the maximum possible during the summer months' high-sun and daytime heat.  But I do know that they can produce at full power during December days' peak sun as we have already seen this happen soon after installation.

Finished arrays:


Step 4 - The team then added the wiring and internal components for the inverters.
Shown here are two inverters - one for the roof and one for the ground mount.
A combiner breaker box taking both inverters' output into one 240V power output.
Also, a production meter (for possibly tracking production for SRECs).
And lastly, a small breaker box so we can install some lights and plugs into the shed.


The power is routed to the house 18" underground in a pvc pipe and then connected up outside using a "service side" interconnection.  No internal wiring was done to backfeed into the main 200A service breaker box.  This photo shows the meters before commissioning.  PECO, our local electric company came out to install two "Detented" meters allowing for proper metering for Net-Metering.  With the original home meter, if the Solar PV produced electricity back to the grid, the meter would still "spin-forward" digitally and you would pay for the electricity you sent to the grid.  Nobody wants that.  Using two meters for a net-meter configuration allows proper billing.



The shed doesn't look too bad after all the work.  We don't have a lot of neighbors around and so the big array shouldn't stand out too much.
The array is a total of 8.16KW.  The inverter maximum output is 4KW each so the array really is a 8KW maximum power output system.  I have seen it hit the maximum of just over 4KW per array on a cold day in December so I know that it is working properly.  We have had a number of cloudy days since it was commissioned so hopefully soon, we will have some good sun to put out some serious output.  On Dec 3-5, before it was properly commissioned, we had the array on for two test days and each day, the array put out over 50 kWh each day.


This system was built by Smucker's Energy, LLC of Kinzers, PA

The new Garden Shed

The following photos were taken during the week of setting up for and delivery of a large garden/yard shed that some might call a small house.

This shed was built by Stolzfus Structures of Atglen, PA

First, remove old shed,  This little guy served us well.  It was a 8' by 16' shed we kept our mower and yard tools in for about 16 years.

 
 

 
Next, prepare the spot for the new shed.  A local contractor prepared the ground and brought in the whitestone for this pad.
 

 
 
Finished pad:
 
Even large sheds are delivered by truck.

Using two of these motorized mules, the shed was brought to the backyard.


After all the work was done - here is the shed placed on the pad, built-out by the shed company and ready for use.
 
Some may ask "why get a front-porch built onto a shed?"  Well, the porch will make for a nice sitting area during summer months.  We hope to put in some flower beds or bushes around the front of the shed to give it some appeal.
 
Next step is to put some of our garage items into the shed and make room in the house by putting rarely-used bins out in the shed on the 2nd floor's storage area.
 
After that, the shed's "back area" will be used for a Solar PV system.  Pictures to come.

Niagara Power Project educational video

Below is an interesting video for kids and adults about the power project that I spent much of my youth visiting, sledding on the reservoir and riding dirt bikes under some of the power long-lines that lead from the project.

 
 
A series of four videos which go back a few decades.
 
 
 
Video part-2 - missing from Youtube.
 
 
 
Power Vista visitor's center;