Friday, June 27, 2014

Gone Solar (considering lease versus purchase)

The tipping point for going solar came in the form of a realization: instead of paying money to our local utility company for electricity, we could pay that same approximate amount of money each month and get solar photovoltaics instead. We'd save trees and eliminate green house gases in the process! We'd be less reliant on our local utilities company's pricing! Yes, eventually, there would be a return on our investment, but in the meantime, we could do something good for the environment without financial hardship.

There were a few requirements for going solar:
  •  a solid roof (ours is only about 4 years old)
  •  decent solar orientation (south is best, east is good, west can work, too.)
  •  not a lot of shade/big trees around your house/shading your roof
We knew we had 1 and 3. But it didn't occur to us until we lived in our house for about 2 years that our east roof was pretty well suited for solar panels.

Lease or Buy?
It was solar leases (also called as PPAs: Power Purchase Agreements) that caught our attention. Here in Colorado, many of them are constructed to be so simple, so hassle-free, and so affordable that signing up feels like a no-brainer. They were no money down, no lien against your house, and no home-owner maintenance required since the panels would be owned by a solar company. Our first quote averaged our electricity usage over the last year (about $100/month) and offered us a flat fee ($97/month) for the next twenty years. Yup: no rising cost for our electricity for TWENTY YEARS, no matter how much electricity we used! Essentially, we would lease the roof space to the solar company, they would maintain the panels, and we would agree to buy back our electricity from the solar company for a flat fee. The system would be about 2.7kW DC produce 3,850 kWh a year. The whole set up was transferable, should we sell our house. At first glance, we were ready to sign.

But then there were some things nagging us to look further. Regarding environmental responsibility, it felt wrong to know that we could use as much electricity as we wanted (for 20 years) and never 'pay' a cent extra for it. To put a finer point on it: what would stop us from turning our house in a giant grow house? (Because we could, legally and financially, at a flat rate of $97/month for solar electricity in Colorado!) As a matter of principle: we didn't want to go solar AND become more wasteful and negligent about our consumption. (Although we could have done this! Heck, maybe we're too honest and not entrepreneurial enough.) It would be pretty easy to be wasteful of electricity, knowing that the amount we pay was fixed for 20 years with a PPA.

Then there was the matter of selling our house. We don't plan to move. But we know that sometimes things don't go as planned. *I* think $97/month for electricity is good, but what if a future owner thinks it's lousy? I'm home in this house all day with kids, but what if nobody was here during the day? What if a future owner was rarely here and never turned on lights? What if the future owner was  my friend who spends only $25/month on electricity? With a PPA, a future owner would have to assume the credit liability for the solar, as well as buy our house. If a future owner was uninterested in taking over our leased solar system, we might have to pay to remove it, and pay for the remainder of the lease, at our expense. Would I want to buy a house with a leased system, based on someone else's consumption? I'm not sure....

What if something unexpected happens and electricity rates fall? (Unlikely!)

Then, we spent a good amount of time second-guessing the business plan of the solar companies doing PPAs. How were they making money? (Because, of course, they were somehow making money off us in this arrangement!) Would they be selling a solar tax credit from the system on our roof to some big, corporate player? Were they raking in short term profits at the expense of long term profits? What if they aren't around in 2018, because the federal solar tax credits they get to take advantage of expire in 2016? What good would they be as an owner if they weren't around to take care of the equipment? Were leasing companies intentionally under-reporting the amount of solar that our roof could produce? Were they using the cheapest panels possible and marking them up to maximize their rebate? How would these things affect us if they went out of business? (Twenty years is a long commitment!)

Maybe we shouldn't care about a company's business plan, but we do. We believe we voice our priorities and values with our dollars spent. So we want to spend our money with that in mind.

It seemed like maybe a PPA was not the right fit for our situation and goals at this point in time. So we started talking about purchasing solar panels.

Some things became clear as soon as we started looking into purchasing solar panels. We were looking for an option with little to no upfront costs, so financing was important. Also, our focus shifted from the service to the product. Here is the quick version of our next few findings and considerations:
  • In the beginning, we would be paying more money each month to cover financing for a 12 year loan at 1.9%, but not a huge amount more. ($120/month to purchase versus $97/month to lease)
  • This window during which we would be paying more for solar panels (versus utility grid electricity) lasted about 5 years, assuming electricity rates continued to rise at a steady pace while our consumption remained about the same. After 5 years, we would be paying less. That meant, if we were planning to move in less than 5 years, purchasing solar panels made less sense.
  • Assuming our electricity usage remains constant, we would see a much higher return on investment over 20 years with a purchase versus a lease. ($13K on purchased system versus $6K on leased system)
  • Production ability of the solar panels mattered more to us with a purchase than with a PPA.
  • Quality and installation of the solar panels mattered more to us with a purchase than with a PPA.
If purchasing solar panels, there are a lot of different ways to do so. You could go through a solar installer or you could hire an electrician who installs solar. Some brave people have been DIYing it. It would be nice if it were simple; but because solar panels usually tie into the public utilities grid, and have government rebates and utilities rebates, AND require permits and approvals by all sorts of different agencies, solar panels can seem awfully complicated. To make it more confusing, the rules and regulations and rebates vary depending on the state, the utility provider, and maybe even the city. We opted to go with a local solar company that installs panels. They have their own affiliation with a bank for financing. Wrapping financing and installing and approvals altogether in a package made it infinitely easier for us. It also helped us to understand all the different rebates, and make sure that we were taking advantage of as much as possible. If we built another house, I might be brave enough to attempt to save money by getting solar panels a different way. BUT for this time around – for getting our feet wet – finding a single, integrated company who could lead us through the whole process was important. We chose a local, employee owned company, Namasté. We have been really happy with them throughout the entire process.

Also, the more we looked into solar panels themselves, the more convinced we were that they were really low maintenance. This was important in our decision to walk away from a PPA. Our worries about the "hassles" of the panels seemed unfounded.* The ability of the installer to install the panels properly and most efficiently and to walk us through all the bureaucracy was important.  Finding the right installer meant we talked to several, compared them to each other, asked them to explain the differences in their approach and systems. This is one of my favorite parts of shopping for any big expense: you discover a lot about companies and their character when you ask them to explain why they do such-and-such this way and another company does it that way. I always learn tons while whittling down my list of prospectives.

The other factor that we really started thinking about more seriously when we decided to purchase was the quality of the panels. There are characteristics of solar panels that vary by brand: the degradation (panel production weakens over time), the warranty of the panels, production capabilities (some panels are more efficient per sf than others), and the durability. Through our searching process, we became huge fans of the SunPower solar panels that Namasté included in their proposal. They rank far above every other brand in all the considerations I just mentioned. More production capability in less square feet with less degradation over time, plus a full 25 year warranty, with the likelihood that they will last as long as 40 years.

After we had a quote for power production using SunPower panels with Namasté we asked a competitor to match the production using their alternative brand. Seeing the competitor's panels, scattered across more of the roof, using 25% more panels to match the production capabilities, at a greater financial cost to us, was a literal illustration of why the SunPower panels were our preferred panels.

We ended up with 18 panels at 327 watts each, a 5.886 kW DC solar PV system. That will produce about 8,352 kWh in the first year. (This is much bigger than the PPA system we would have received from the leasing company!) If we use more electricity than the system produces, we'll be paying to get that electricity from the utility company, unlike the PPA. But owning our own system means we're highly motivated to use LESS. What if we produce more power than we use? Well, in Colorado we have option of either carrying those kWh forward OR being paid by the utilities company for the extra power we produce. Honestly, I don't expect that our electricity consumption will change too much in the next few years. But if we were to produce more power than we used, it might make sense to heat the house with electric heaters, thus reducing our gas bill, or buy an electric car, thus reducing our gasoline consumption. (It probably doesn't make as much sense to let the utility company pay for the extra energy production, because they pay less for the energy than they charge. Still.) Pretty cool, right? It's really exciting to start thinking about your house as a power plant.

Our newly installed bi-directional meter - running "backwards" from 00,000!
Fritz hopes the utility company won't mistakenly charge us for
99,977 kWh in the week since the meter was installed.

Or, I can think of our house as a giant counterweight to all the CO2 pollution our society does. In one year we will reduce CO2 emissions by:

  • 17,100 pounds (OR)
  • the equivalent of reducing vehicle miles by 18,705 miles (OR)
  • the equivalent of planting 658 trees

That's huge! To think I was previously proud of the fact that we've planted 6 trees in the 4 years since moving into this house!

*The lack of hassle proved to be true in at least one regard sooner than expected. About a week after the panels were installed we were hit by a severe hailstorm. Our asphalt roof was damaged so badly that the insurance will replace the whole roof, including gutters and vents. The solar panels, however, were completely undamaged. Our insurance-recommended-roofer plans to subcontract this work to the original installer, making it much less of a hassle and risk than I even anticipated. (Seeing the damage to the asphalt shingles kind of made me wish the whole roof was solar panels.)

Wednesday, June 25, 2014

Shade Segue

Oma has been here visiting for the last two weeks. I tend to check out of blogging when we have houseguests, because I feel like blogging is a rather solitary activity, best left for a quiet evening alone. But I do miss blogging!

I've been mentally writing a lot of blog posts lately: on pergolas, solar panels, the garden, being/having houseguests, summer camps, 10 year anniversaries....

But for now, how about a photo segue?

[sorry, photo gone!]

We spent some time up in the mountains, courtesy of Fritz's very generous colleague who invites us to stay at his cabin sometimes. I DO SO LOVE being there. Given unlimited resources, I would definitely own a cabin in the mountains and invite you all to come stay. The weather was perfect: meaning sunshine and blue skies, but not too hot.

[this one is gone, too]

The sun. Oh, that sun. Surely I am passing along my shade loving genes to the boys. Just look at this contraption on their playhouse.

[guess you'll just have to subscribe to my blog if you really want to see the photos]

Let's hope they also get my good sense of orientation soon, because all of these umbrellas are facing NORTH. (Pssst! Put them on the other side of the house, guys!) Or maybe they didn't get my shade-loving genes, after all.

[this was a cute one!]

Speaking of genes, here are the kiddos with Oma. I think Trixie looks a lot like her. I rather hope she gets Oma's curls (curls which her maternal grandma has as well)! Although I, personally, would be at a loss to help her style her curly hair. That would have to be the job of the grandmas!

[another cute one!]

I'm going to tell you a secret about the 2 photos above: they're fake. By that I mean that I took 2-3 photos that were almost the same (same people, same background, taken within the same 30 seconds) and then traded heads. Even then, some child has his or her eyes closed or is looking slightly odd. These don't look like professional photos, but they have the ONE quality I want in a family photos: everyone looking approximately at the camera. That's it. That's all I want. I don't need airbrushed wrinkles, or moles removed, or big smiles, just multiple people looking at the camera simultaneously. I find it NOT EASY with kids. I have to take photos with the intention to cut and paste them together. But I decided faking it, especially with young families, is entirely okay. Hopefully, if you pay a professional photographer money for a photo shoot, they can do this same magic and more. In our modern, computer literate world, I don't think that's asking too much. In fact, it's probably pretty stuffy and boring and old-fashion of me NOT to care about filters and focus and spontaneity... What? You just want a photo where people look at the camera? That's so Nineteenth Century of you!

(Off soapbox.)

Spontaneity can be fun. For some people.

[funny one]

Obviously, the photo above didn't work out so well.

[also funny]

But we are seeing a lot of this lately. I think we could easily change Trixie's name to Tenacity. She is so undeterred by any physical pursuit; so determined to climb everywhere and anywhere. (Umm, Trixie, those are rocks you are walking on! Didn't you just get that cast off? Can you take it a little slower for your old mom?) Honestly, I find it unnerving because she's far less stable than I would like, but she just won't stop trying once she decides to do something. She's very different from her brothers in this regard.

[bye bye photo]

I'm pretty sure I had to help them both get down after I took this photo. Huh.

Sunday, June 8, 2014

Pergola (with Canopy)

I found this pergola kit on a german website the other day. I believe the manufacturer is Dutch. I really like the (deceptively) simple, thin wood frame and softness of the canopy overhead. Hmmm...I could take a wood that is less yellow-toned. But otherwise, I've been looking for something like this for our deck.

Hello, Home Depot? Please add this to your collection.
You don't usually see pergola structures like this in wood. What makes the design unusual is the physics that are implied. Theoretically, the wood beams in this design have to withstand a significant amount of force over a very small area (at the joint).

More commonly, wood designs tend to overlap and stack. Overlapping and stacking distributes the force over more area. It also makes the structure look more visually cluttered and heavy (below). In order for a "simple" design, like the one above, to be solid and safe, you need some special reinforcing brackets, or diagonal braces, or a particularly strong wood, or a particularly thick lumber dimension. The Dutch kit appears* to use special brackets.

Home Depot's Montego Bay Pergola.
Psst... not very cool even with the computer generated landscape.

So, if your favorite architect gets strangely excited about what seems to be a very simple pergola design, now you know why.

* appears, because my Dutch language ability is based on my already lacking German abilities!

Friday, June 6, 2014

Clean up

Thank you for all your cleaning-with-kids tips! I'm totally inspired to do much better this summer with our cleaning routine. This weekend we have some Major Cleaning to do because Oma arrives for a two week stay on Monday! I'll try to keep you posted on our cleaning challenge as it progresses. But not too much because that could be really boring, right?

[photo of The Cleanliness Saboteur]

Both Noah and Mattias cried about today being the last day of school. I think that's a testimony to what great teachers they had this year. Both of their teachers are looping – i.e. teaching (mostly) the same kids at the next grade level – next year. We're absolutely thrilled about this. It helps, of course, that both teachers seem to be such a good fit for the kiddo. Their tears about the end of the year did give me a nice dose of insecurity about my own mothering. Aren't they suppose to be excited about the summer? Maybe I'm not looking like very much fun these days. Hmm. Maybe I need to stop talking about our cleaning routine.

Monday, June 2, 2014

Summer Vacation Order

Hi there!

[photo removed]

Summer vacation is almost here and I'm nervous.

So...I have a question: do you have a method for keeping your house orderly when your children are home all day (as in, during the summer or on the weekends)?

We currently have no method. Sometimes we do an evening cleaning. Sometimes we clean all weekend. It's spotty and ill-enforced. It can depend on the day, how much we are home/in the house, and who is (or is not) actually available to do the cleaning. Consequently the house spends a lot of time in messy chaos when all the children are home.

I think it would be highly advisable to have some a plan or set expectations for my sanity this summer! But what? Chore charts? Set times to clean up? Rules to restrict play to certain items? (Actually, there's no way that last one is going to work in our house....)

I am also interested in some tangental things like:

  • What are non-cleaning children (like a one-year-old) doing while the older ones are cleaning?
  • What is a reasonable expectation of cleanliness? 
  • How about a reasonable expectation of frequency or time spent cleaning? (Since Noah is 7 and Mattias is 4, I guess expectation in line with their ages would be good...)
  • How much supervising/helping do you do?
Seems like I should know this stuff after 7 years, but I still haven't figured it out. 

Sunday, June 1, 2014


We managed to plant 360 grass plugs on Saturday.

It felt great to be working on a project as a family. Well, Trixie wasn't much help.

But Noah and Mattias actually helped quite a bit. Collecting dirt plugs, spraying water, and packing dirt is pretty much exactly what they like to do when they play in the yard anyway; so it worked well. They spent hours knocking the dirt off the roots of the grass and sorting into separate containers. I was impressed. If only every project channeled their creative play so well.

Planting the dogtooth grass plugs
Why we planted the grass (a dialog)
The African dogtooth grass experiment begins in May
The African dogtooth grass at 4 months in August
The additional bulb flower experiment
Where the bulbs get eaten by the rabbits
Fifteen months after planting
Two years in when the Japanese Beetle grub arrive