October 2019 was an okay month for solar production:
As you can see, my solar array exceeded the production of 2017 but fell short of what was produced in 2018. Those are the breaks. All in, my household ended up down ~229 kWh.
Granted, a lot of this delta between consumption and production can be accounted for by the Nissan Leaf sitting in my garage. For the month of October I drove 900.3 miles at an average efficiency of 5.4 miles per kWh. Total electricity consumption to drive my EV was ~167 kWh. This represents an approximate savings of 1,034 pounds of CO2 versus driving my prior vehicle.
For the year I have driven 6,794 miles with an average efficiency of 5.3 miles per kWh. Assuming all of the electricity I have used comes from the grid at an average carbon intensity for my region I have saved ~7,767 pounds of CO2 from being emitted.
What is really a good sign is that I should really be in the black when it comes to consumption versus production within a month or so. My local electric cooperative approved my revised interconnection agreement and an additional 8 360 watt solar panels are waiting to be installed. A weekend with snow has kind of messed up everyone’s schedule around these parts so I am just waiting for the phone call from the installers. Any day now.
An extra 62% production capacity will put me well above my consumption numbers, including my EV’s needs and a few electrification projects I have pending, for the foreseeable future. For the year I estimate that I would be ahead of consumption by 1,858 kWh assuming similar weather patterns. That is a lot of cushion to further decarbonize my household.
Posted in Household, Uncategorized
Tagged carbon emissions, climate change, decarbonize, efficiency, EV, global warming, Household, Iowa, kWh, lead, MPe, Nissan, October, photovoltaic, PV, renewable energy, solar, solar array, solar panel
My goal for the year was to plant an additional five trees in my yard. Before spring the yard contained thirteen trees (1 elm, 1 sycamore, 1 maple, 3 yellow poplars, 3 Norway spruce, and 4 red oaks). Over the years I have drawn out several plans to add to my trees.
However, the nursery stock this year was harsh. I rarely saw a shade tree worth a second look and the conifers were wicked expensive. Early in the season I was able to find a pair of Norway spruce for about $65 each. This was an easy choice since I had a spot picked out:
Both trees really took to being planted and put on a thrush of new growth within weeks. The weather this summer has been amenable to trees as well with well-spaced moisture and not too many blistering hot days. Even the days that were hot lacked the combination of heat and sun that really seems to knock the stuffing out of plants.
Hopefully before the end of fall I can trim around the trees like the maple in the foreground of the picture above. The surrounding mulched bed will not be planted with perennials like the maple. Over the years the branches will spread to encompass the entirety of the mulched bed. Also, this is just the start of what I have planned for this side of my yard. See the disastrous “sport” court in the neighbors’ back yard? Yeah, I do not want to see it either. Next year is going to be a heavy year for trees.
Just this weekend I ran across a store doing a fall sale of container grown conifers for just $15 each. Normally, I am not a fan of Colorado blue spruce as the species is over planted in eastern Iowa. I could not turn down relatively good looking trees at a low, low price. I picked up three and got to work finishing another planting bed where I am trying to take out all of the turf grass:
This part of my lawn is almost entirely sand. The only soil, so to speak, is what came on the rolls of sod that were laid down and what I have added when planting trees. The area has little soil fertility and retains very little moisture. It is like a thin layer of soil, compacted, and sitting on a jelly roll pan. If you pour out a bucket of water you can watch it flow downhill without really penetrating the soil. While the rest of the yard can handle a period of drought—mowing the grass extra high and allowing clover to spread helps—this little corner dries out and dies. I had considered top dressing the lawn in this area, but felt that it was a better use of space to plant trees and perennials, edge the area, amend the soil, and deeply mulch. I will get to the edging, amending, and mulching next year. I promise.
The only downside of all of this planting is that I have used up the contents of one of my compost bins. There is some compost left and a few things that did not break down over the years, like the muslin bags used to steep grains during my homebrewing days, which will go into a mixture to improve soil health in the areas where I remove turf. The other bin is fairly full, so in a year or so I should have a lot of nutrient dense compost to amend my sandy soil.
Posted in Landscaping, Uncategorized
Tagged C02, carbon dioxide, climate change, Colorado Blue Spruce, compost, conifer, cooling, evergreen, global warming, landscaping, lawn, microbes, mulch, Norway spruce, soil, trees, yard
There are times when driving my second hand Nissan Leaf feels like I am working on cracking a code. Change one behavior (e.g. turning on the heat) and relative efficiency takes a nose dive. Adjust a few things (e.g. make sure to drive with the car set in “B” mode) and it seems like you can do no wrong. Ambient air temperature, type of driving, route choice…on and on it goes.
I am certain that it is the same for a traditional ICE vehicle or even a Tesla, but when you are limited to a little more than 100 miles on a full charge there is a hyper heightened awareness to how quickly the “guess o’ meter” depletes. However, it was a lot less of a concern this month as I averaged 6.1 miles per kWh for just a tenth of a mile over 900 miles. That works out to a little less than 148 kWh of electricity consumed and ~1,053 pounds of carbon dioxide emissions avoided versus driving my truck.
Since January I have driven 4,607 EV miles at an average efficiency of 5.1 miles per kWh. This correlates to ~5,234 pounds of carbon dioxide emissions avoided versus driving my truck. As I have said before this assumes that I draw all of my power from the grid as opposed to generating it on site with my solar panels. Based on gasoline prices I have saved about $650 just in fuel since January.
Speaking of solar photovoltaic production, July was a fairly good month:
720 kWh for the month is good. It is a little bit less than the same month during the prior year, but I would say that it is within the margin of error. It is not like this is January and February where snow covered my panels up to a foot deep some times.
All in my household consumption ended up about 26 kWh more than my production. Included in my household consumption numbers are almost all of my EV charging, so without the Nissan Leaf in the garage we would have ended up over 100 kWh. Granted, that would mean I was spewing carbon dioxide from the tailpipe of my truck. I will take the trade.
Unlike some summer months we were home for every weekend and took no trips. Furthermore, for the entire month of July we went out to eat once. I feel fairly good about making all but one meal at home, charging my electric car, running the air conditioning when it got really hot, and still managing to almost be even in terms of household electricity consumption versus solar electricity production. It is my hope that in the next month I will adding about 60% more solar photovoltaic capacity to my roof.
Posted in Household, Uncategorized
Tagged array, carbon dioxide, climate change, electric vehicle, emissions, EV, gasoline, global warming, kilowatt hour, kWh, Leaf, Nissan, photovoltaic, renewable energy, solar
What the actual shit? This is the Secretary of State of the United States of America telling the public that the solution to climate change is to move to different places. Oh, and the travel time for goods shipped between continents might be slashed because of the lack of sea ice. I am sure everyone is going to be comforted knowing that their 65” television from China is getting here a little faster as they roast in a climate hellscape.
On to the links…
Report: Global Emissions At 7-Year High—Well, fuck.
EPA’s 3 Dirty Tricks to Undermine Regulation (and Why They Probably Won’t Work)— We live in an alternate reality now where dirty is clean, good is bad, and facts are fake.
U.S. Renewable Power Capacity Surpasses Coal For The First Time—Buried in all the grim news are some glimmers of hope.
Here’s Proof That Electric Cars Are Displacing Gasoline—Demand destruction is a bitch. Once that demand is gone it is not coming back and fossil fuel companies are starting to come to that realization. These are millions of gallons of gasoline demand just…poof…gone from the market:
Australia Missing Out on Huge Cuts in Emissions through Energy Efficiency Failure—Basically, if we just were more efficient with the energy that we already produce we could make major headway toward reducing emissions. Using less energy to begin with is the first step in a net zero emission future.
Climate Change Is the Symptom. Consumer Culture Is the Disease.—Our modern society is just a joke. We have become nothing more than money lungs bent on consumption of crap.
US Offshore Wind Race Heats Up, Now Connecticut In The Mix—To get to a zero net emission future offshore wind has to be part of the renewable energy portfolio.
Follow The Money: Global Investors Flee Coal Power Like A Hot Potato—Get used to the term stranded assets. It essentially means assets that have no value because there is no buyer in the marketplace. You may have invested hundreds of millions of dollars in a coal mine only to find that its value is zero because there is no other party willing to invest. What the market giveth the market can taketh away.
Renewlogy Turns Low-Grade Plastic into Usable Fuels—We have a plastic waste problem on this planet. I do not know if turning plastic waste into a liquid fuel is the right idea, but it is better than anything that we are doing right now.
ALDI Ranks First Out of 20 Retailers for Reducing Single-Use Plastic—This is kind of like winning an ugliest dog contest. Yes, you are a winner. However, it is for being an ugly dog.
Processed Foods are a Much Bigger Health Problem than we Thought—Maybe that hokey diet advice about not eating ingredients you cannot pronounce was not that hokey after all. Maybe there is no reason for PopTarts to exist.
Are McMansions Making People Any Happier?—A bigger house will not make you happier. A grill with twelve burners and a Bluetooth meat thermometer will not make you happier. As a matter of fact most stuff will not make you any happier beyond the initial sugar rush of the initial purchase. Get off the hedonistic treadmill.
Climate Change I Have Known—Climate change is real and its impacts on our lives are noticeable.
Your Coffee-Buying Habit Could Hamper Your Retirement—It is important to think about personal finance in terms that people can understand. Retirement for most people is something so far away that we fail to understand just how powerful actions taken today can be in setting us up for future success.
Posted in Linkage, Uncategorized
Tagged ALDI, Australia, climate change, coal, coffee, demand destruction, diet, electric vehicles, emissions, energy efficiency, EPA, EV, global warming, greenhouse gas, hedonistic treadmill, linkage, links, microbiome, Mike Pompeo, offshore wind, plastic, Renewlogy, single use plastic, stranded asset, weight loss
May was a rainy month in eastern Iowa. How rainy? It rained for twice the number of hours in May and three times the usual rainfall hit the ground. Things were really wet. Like the “ground is a sopping wet sponge” wet. It had an impact on May’s solar production:
Now, just over 542 kWh of clean, green solar electricity is not bad. It is down about 80 kWh from the same month the prior year.
All in all, my household ended up about 10 kWh ahead of consumption for the month of May including home charging of the Nissan Leaf. When you can drive all month and live in house with modern amenities all powered by the sun that is considered a win. Sometimes I just feel like I am living in the future.
For the month I drove 937.4 miles in my Nissan Leaf at an average efficiency of 5.5 miles per kilowatt hour. This beats my efficiency the prior month by 0.1 miles per kilowatt hour. This saved ~1,080 pounds of carbon dioxide emissions versus my prior vehicle assuming that I charged using grid electricity, which in Iowa averages about 1 pound of CO2 per kWh. As noted above, I actually ended the month ahead of my consumption so the emission savings were probably higher.
It does not seem like a big win in terms of efficiency. However, there are two round trips to Iowa City that totaled almost 140 miles of driving at highway speeds. For anyone who has driven a Nissan Leaf there is a moment of dread the first time that you get the little car up to 60 miles per hour or more and watch your efficiency drop like a stone in freefall.
The trick is to minimize interstate highway type driving in favor of more sedate state or county highway driving. That is to say, drive 55 miles per hour as opposed to the 70 miles per hour or more on the interstate. It takes a little longer, sure, but there is something really peaceful cruising along with the windows down and the silence of an electric vehicle drivetrain.
It also helps to have access to public charging at the midpoint of your trip. In Iowa City there are ChargePoint facilities available in several public parking ramps. You pay for parking (first hour is free and a $1 per hour for any additional time) and the charging is free as long as you have a ChargePoint account. My Leaf is equipped with a standard Level 2 charging port so it can accept, at most, 3.3 kWh of electricity per hour of charge. It is not a lot for the ninety minutes or so that my errands in Iowa City take, but it provides a margin of safety for the trip home that eases any potential range anxiety.
These trips have gotten me thinking about electric vehicles and range. Maybe the issue is not absolute range, as in 235 miles of range when fully charged, but rather the ability to gain a lot of range in a short period of time, as in 80% battery charge in 30 minutes. If I was able to regain more than three quarters of my vehicle’s charge in less time than it takes to make a quick trip into Costco that would change my route calculations considerably. Also, if more public charging facilities were available at destinations that might also change behavior.
Do I spend a little more time in downtown Iowa City because I am charging my Nissan Leaf? Probably. Think about that from an economic development standpoint.
Posted in Household, Uncategorized
Tagged ChargePoint, climate change, CO2, efficiency, electric vehicle, emissions, EV, global warming, greenhouse gas, Iowa, kWh, Leaf, May, miles per kWh, Nissan, photovoltaic, PV, rain, solar
What is it with my kids and John Tesh? Every night when we drive home from various activities they both beg for the radio to be turned to the station that plays Tesh’s syndicated “Music and Intelligence for Your Life.”
It is so odd to hear them discuss the relative merits of whatever study or lifestyle tidbit Tesh brings up between songs.
On to the links…
Minnesota’s Climate Begins its Descent Toward an Unrecognizable Future—The future is happening now when it comes to climate change. The impacts may not be noticeable in the short term, but the changes are happening.
Planting 1.2 Trillion Trees Could Cancel Out a Decade of CO2 Emissions—What are we waiting for?
Amazon’s $0 Corporate Income Tax Bill Last Year, Explained—This is the symptom of a failed policy. Amazon makes billions of dollars a year and uses a loophole to pay no tax.
The Secret Ingredient for Cutting Costs and CO2 Emissions in Infrastructure—There are huge savings in terms of energy efficiency when we look at the biggest users of energy across the United States. Cutting the energy consumption of these “low hanging fruit” could deliver massive savings for relatively low cost on a timescale that is fairly quick.
BP Energy Outlook Predicts Renewable Energy Will Be Dominant By 2040—Remember, this is an old line fossil fuel company putting out a technical analysis that says renewables are going to win.
Trump’s Intervention Fails to Save Coal-Fired Power Plant—Remember when Republicans were all about the free market because…uh, freedom? The market has said that coal is a dead technology and that the transition is underway, but people like Trump and McConnell have coal barons to keep happy.
EU Setting its First Emissions Standards for Big Trucks to Lower C02—Cutting the emissions of heavy duty and heavy use trucks is probably the biggest bang for the invested dollar that we can get in the near term.
World’s Biggest Battery to Boost Solar in Texas—Texas, surprisingly, is driving a lot of innovation in renewable energy. First it was a lot of wind and now it looks like solar plus storage is going to be the next big thing. Everything is bigger in Texas.
World’s Largest Offshore Wind Farm Hornsea One Generates First Power—I am noticing a trend with these renewable energy stories. Every other one seems to be about the “world’s largest” something. Largest storage battery, largest offshore wind farm…you get the idea.
Vineyard Wind Proposes 1,200 Megawatt “Liberty Wind” Offshore Project For New York—This would be America’s largest offshore wind farm. Okay, that would not take a lot.
Here Comes All Your California Offshore Wind Jobs—The craziest number in this article is 112 gigawatts. This represents the state’s technical offshore resources, which is a figure higher than the state’s current electricity needs.
Giant Wind Power Transmission Project Could Spark New Wind Rush In Wind Belt—The more wind power that we can deploy in the Great Plains the better. It is clean, green power that helps economically depressed communities by bringing much needed income and property tax base.
Adding Balance to the Meat Debate—There is something to be said for balance. What we eat is as important as how it was made. A processed meat free “chicken” nugget may not be any better than a piece of chicken from a pasture raised bird. There is a lot of nuance. People hate nuance. It forces them to think.
A Comeback for African National Parks—It’s not all bad news. It appears that if we resource the parks and do not encroach on the boundaries with development that large animals can succeed.
Posted in Linkage, Uncategorized
Tagged Africa, Amazon, battery, climate change, coal, electricity transmission, emissions, energy efficiency, global warming, heavy duty trucks, high power line, Hornsea One, Liberty Wind, linkage, links, Minnesota, moose, National Parks, offshore wind, solar, tax, Texas, Trump, TVA, Vineyard Wind
It is five days until election day. I cannot stress how important it is that everyone who is legally eligible to vote goes to the polls to cast a vote.
October turned out to be a decent month for solar:
Production for 2018 beat the production from the same month in 2017 by a little bit. According to my calculations I also ended the month in positive territory (production minus consumption) to the tune of ~45 kWh. I say it was a surprising month for production because the month started out very gray with a lot of rain. You can see the low production numbers for several days, but the sun came out at the back half of the month to bring in more than 316 kWh of clean, green electricity.
An unexpected car repair—nothing says welcome home quite like coming back from vacation and having your car not start—got my wife and I thinking about a new car. Naturally, as someone who has a solar array on top of their house an electric vehicle of some sort is part of the consideration set. The hard part, beyond the financial commitment of a new car which is something significant to consider after having zero car payments for the past five years, is comparable vehicles. Is a Chevy Bolt, or Volt for that matter, really comparable to a Tesla Model 3? Where does the Nissan Leaf fit into the equation?
In the end the part that got me the most excited about this discussion was how much solar photovoltaic capacity I would need to add to my roof to generate enough electricity to account for our annual driving of a single vehicle. In an average year we drive less than 10,000 miles for either of the vehicles in our garage. Some years it is quite less if we do not take any extended road trips, which are one of our indulgences.
How does 10,000 miles equate into electricity? Based on a cursory search of various message boards for EV owners I am going to use a figure of 3.5 miles per kilowatt hour of electricity. Therefore, a system would need to produce ~2,850 kWh per year to account for 10,000 miles of driving. Based on the actuals from my current solar photovoltaic array I figure that I would need to add 9 or 10 290 watt panels, which are equivalent to what is on my roof today. At a cost of $2.5 per watt installed I would be looking at $7250 before state and federal incentives.
Does anyone realize how scary that idea must be for oil companies? With just 10 panels on a west facing roof in Iowa I can account for 100% of my annual miles driven at a cost of little more than seven thousand dollars. No gas stations, no wars in the Middle East, no refineries…yeah, that is truly scary for oil companies. The revolution will be powered by the sun!
Posted in Household, Uncategorized
Tagged carbon, climate change, election day, electric vehicle, global warming, greenhouse gas, Iowa, kWh, October, photovoltaic, production, solar