If you’re worried about power use, think about motors

When reviewing power use with my Emporia Energy Vue I realized one highly overlooked power consumption item in homes – motors.

Motors are everywhere – ceiling fans, attic fans, sump pumps, furnaces, air purifiers, bath vents, etc. They’re easy to overlook but really should not be overlooked if you care about power use.

Take for example the ceiling fan. A common builder grade unit can draw 60 watts of power and while that’s still more efficient than an air conditioner and can help distribute cooling/heat in a room – its not very efficient. Look for an Energy Star ceiling fan with a DC motor and you’ll draw about 20 watts for the same air moving effect.

Obviously for occasional use that 40 watt difference isn’t a big deal. Run it constantly and you’re looking at about 350kWh difference a year – that could cost you on average $45 extra per year ($28-$122 depending where you live).

Once you take care of the obvious home stuff (LED lights, etc) motors may be one of the best ROI items for swapping out. Be sure to look for DC motors and/or Energy Star logos when buying things for your home with a motor, you’ll save a lot in the long run.

Emporia Vue is Changing My Mind About Home Power Monitors

In my past article about home power use I recommended the Kill-A-Watt to monitor individual device power use rather than a whole home unit like Sense. I figured the big stuff was obvious to change (water heater, lights, etc) and the small stuff couldn’t be worth $300 plus professional install (optional but recommended) given the low cost of power in the Northwest.

Since then Emporia Energy has come out with the Vue starting at $50 to monitor just the mains, or $99 with 8 individual circuit monitors. While you still have to consider install, it is DIY capable for most handy homeowners. Needless to say, this is a bit more Eco Friendly Cheapass friendly, so I bought one.

So what does Vue get you that a Kill-A-Watt doesn’t? First off 240v devices and hardwired devices you might not otherwise see like your furnace blower, ceiling fans, dishwasher, etc. You also will see loads you never considered like an attic fan.

Unlike Sense, Vue doesn’t try to identify individual devices only circuits. So I still think a Kill-A-Watt is useful to identify where power is going once you identify a circuit using a lot of power (for circuits with multiple devices on it).

So what are my results? After my first few weeks of trying it out I made a few adjustments which helped cut around 200kWh (about $20) off the December bill.

Aside from that I actually gained a lot of comfort with knowing where all my power was going. I now know 45% of our December power goes to the cars and now when bills fluctuate I can see if that’s related to driving patterns or other home use. The old dishwasher from the last homeowner I was worried about only uses a bit over one kWh per cycle (more than new units, but not enough to be worth changing). I also discovered an unknown power draw of 60 watts which I’m still hunting down.

The biggest downside is that home power meters help identify usage but not unusual use or areas for improvement. So for example you can see your beer fridge is using 300kWh monthly, but you need to do the research to realize that’s more than triple a new fridge’s power consumption.

However I hope this won’t dissuade you from the idea of a home power meter, rather set expectations you’ll have to do some legwork yourself to make the most out of the data you collect.

Interested in trying out the Vue? Grab one here and support the ecofriendlycheapass.com blog!

Don’t Worry About Perfection, Only Progress

As we end this year I’m going to get philosophical instead of my usual pragmatic nerdery. I’ve been reading a lot of criticisms of technology and people for being imperfect. Yes Greta Thunberg ate food out of plastic containers, AOC rode in a minivan, EV batteries do have an environmental impact to create, and even my solar panels were delivered in gas powered trucks.

Trolls would have you believe we should discredit anything that’s not perfect, while neglecting any progress or realizing we can’t control everything. I can’t magically put EVs at every airport rental counter and chargers at every hotel powered by wind or solar. Greta can’t magically make more foods get packed in compostable containers. I don’t think we should not work or eat until we solve the world’s problems.

The reality is we should be proud of what we actually have done and encourage other people and companies to improve what’s practical and effective. To that end in the year to come I suggest the following:

  1. Choose a couple things you can do to reduce your impact – no matter if that’s installing solar power or just bringing your own cup to get coffee, chose what you can realistically do better next year.
  2. Share the word – one person being perfect is often less effective than many people making modest changes. Getting 5 friends to insulate their ceilings and install smart thermostats would have more environmental effect than just about any project you could do to your own home.
  3. Ask for change from businesses you regularly do business with. I’ve asked IHG Hotels to reduce the trash created by their breakfasts – I suggested using reusable or compostable materials instead of disposable. If enough people ask for something some businesses will act on the demand.
  4. Vote with your dollars – frequent the businesses that try to do better. I made it clear to IHG Hotels if their competition does better on these matters, I’d switch where I stay.

Okay that’s enough soapbox for one year, I promise more nerdery next time.

The Surprising Power of the Off Button

I’ve long believed in the idea that most electronics power saving modes are very low power and left the stuff in my office on when not in use. However I decided to challenge that belief with my kill-a-watt power meter and was surprised to find enough power use to change my habits.

To start out I separated my power strips into two sections – things that need to stay on like the cable modem and router vs. things I only need during work hours like the PoE switches, printer, usb hub, etc.

Once I did that split it was easy to review the power use of the “work hours only” equipment. What I found is power saving modes do work, there was a 20 watt reduction when things went to power saving mode. However that still left about 40 watts being used by stuff I didn’t need outside of work hours.

While turning off stuff when not at work seems trivial (I’ll just be there the next morning) work hours are only about 1/4 of a year. So 3/4 of the power I was using was wasted. Turning off the power to that equipment in my case saves 263kwh annually, or about $34/year for the national average power rate and nearly 400lbs CO2.

If you happen to be the forgetful type you can pick up a smart plug for about $25 which can automate the scheduling and can be overridden as needed with a touch of a button or an app.

Even if you don’t have a home office this can apply to any number of things – your living room electronics for example can have a gaming system, set top box, etc wasting your power when you’re not using it.

Solar Update and Q&A

Many of our friends and family have expressed an interest in solar power but given the expense wanted to let us be the guinea pigs for it. Now that its been 8 months I figure we have some real world experience to share.

Does it Really Work?
From January through June we produced 5680kwh. Typically these months produce 52% of the annual production, so we’re on course to produce 10900kwh this year (a bit above the annual average use for a PSE customer). This is about 10% more than the installer estimated, meaning our system will be even cheaper than we originally predicted this if overproduction continues. So short answer, yes, solar power does work even in rainy Seattle.

Any Problems?
So far not a one. It has dealt with feet of snow and windstorms without issue.

What About Maintenance?
Zero so far, the rain has been keeping them clean and our trees are far enough back that debris hasn’t been an issue.

I’ve also gotten many recurring questions, here’s some common questions and answers about solar power.

Is my roof orientation okay?
A southern facing roof is ideal, but ours is more east/west and we produce only about 5% less than our cousin’s system which is more south facing. I’d avoid solar for heavily shaded roofs and north facing roofs, but otherwise don’t let concerns about the roof get in the way of considering solar power.

Will my HOA Allow Solar?
As long as you own the roof (e.g. not a condo) legally an HOA cannot ban rooftop solar in Washington State (RCW 64.38.055). HOAs can reasonably limit aesthetics (e.g. banning tilt kits) but a homeowner does have the right to install solar power.

What about cloudy days?
When people think of solar they often think of being off-grid, but most residential solar power systems are actually grid tied with net metering. When the system overproduces the power is sent to the grid and you get credits, when it is nighttime or overcast you pull from the grid and use the credits or buy power when the credits are all used.

What about power outages?
Solar power systems actually turn off when the grid power is down to protect the lineworkers from being electrocuted. If you want to use solar power to address outages you’ll need batteries like the Powerwall and an automatic transfer switch.

What About Online Estimators like Project Sunroof?
Project Sunroof is an interesting Google service using satellite data to estimate roof solar potential. It is however just an estimate – it appears to underestimate my production potential by at least 20% and overestimated the cost of my system about $14000 too high. When you get a solar installation quote any reputable dealer will use a Suneye (or similar PV analyzer) to get better data to estimate production.

Knowing Power Use

Every month you get a power bill but chances are you have no idea what most of the devices in your home cost to run. While that might sound nitpicky to understand, by knowing where your power use goes you can make smarter choices about upgrades and appropriate settings to reduce use.

For example in our previous article about beer fridges it turns out a 90s fridge uses so much power you can save hundreds a year by replacing it. The same can be true for old AC units, some set-top boxes, older plasma TVs, etc. Rooting out power hogs can have a huge impact.

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LED Bulb Replacement Calculator

I’m sure you’ve already heard about LED lights, but I’m in awe how often I still see incandescent and halogen bulbs around. There are a few common reasons people give such as color, dimming, and cost – but I think they’re outdated concerns with the latest LED bulbs.

People understandably like the warm glow of incandescent bulbs, however LEDs have come a long way. The Wirecutter says the Cree bulbs “look as good as incandescents” and dim all the way to zero without humming.

I also hear people say they only use their bulbs a few hours in the evening, but when I made a calculator I was surprised to find an LED bulb will often pay for itself in the first year with just an hour of use a day. Not to forget changing out the lights in a living room alone can save hundreds of pounds of CO2 annually.

Check out the calculator below, its preloaded with some average defaults but you can also tweak the numbers to your needs.

Your Beer Fridge is Wasting Your Beer Money

There’s few things more American than keeping an old fridge in the garage stocked with beer. But have you considered how much beer money that fridge wastes?

Take for example a 1990 side-by-side fridge. Running that for a year costs over 500 cans of Kirkland Signature Light Beer. Even a year 2000 top freezer refrigerator costs 260 cans of Kirkland Signature Light Beer.

There’s a few simple answers – consider doing without or getting a new fridge. For example at Best Buy a 115 can beer fridge is $199 and costs just 73 cans of Kirkland Signature Light Beer to run.  A larger 10 cubic foot fridge freezer costs just $299 and costs just 75 cans of beer. In 1-2 years replacing an old beer fridge can pay for itself, leaving you plenty more beer money.

Learn more about your current beer fridge’s operational cost (in dollars) at EnergyStar.

Two Easy Things To Cut Your Home Heating Bill and CO2

Home heating turns out to be a huge impact environmentally, heating a 2000sq foot home in the Seattle area can commonly range from $500-1700/year and 7000-17000lbs of CO2 annually. Needless to say modest improvements in efficiency can have major impacts.

While there’s huge, expensive projects you can undertake to cut these factors, there’s two simple things we did which cut our impact roughly by a quarter.

Below is a picture of our “new” (1980s) home gas use (we’re the blue line). In October things started to cool off here and you’ll notice we were running at the same gas use of an “efficient” neighbor, but since then we did just the two improvements below and now use 26% less natural gas than an “efficient” neighbor.

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