Smart Home Energy Savings: How to Cut Your Electric Bill with Smart Plugs
Phantom power costs most homes $15-40/month. Smart plugs with energy monitoring find your biggest offenders and schedule them off — real savings every month.
title: "Smart Home Energy Savings: How to Cut Your Electric Bill with Smart Plugs" date: "2026-03-26" description: "Phantom power costs most homes $15-40/month. Smart plugs with energy monitoring find your biggest offenders and schedule them off — real savings every month." category: "Smart Home" heroImage: "/images/blog/smart-home-energy-savings.jpg"
There's a decent chance your home is spending $15–$25 a month on electricity right now with nothing turned on.
Not a glitch. Not a billing error. Just the quiet cost of devices that are never fully off — televisions, game consoles, cable boxes, coffee makers, phone chargers, desktop computers. All of them draw power when they're sitting in standby. Not a lot, individually. But across an entire home, it adds up to real money every month, year after year.
This is called phantom power, and most people have no idea it exists.
→ Shop Kasa EP25 smart plugs with energy monitoring on Amazon
What Phantom Power Actually Is
Modern electronics don't fully turn off when you press the power button. They go into a low-power standby mode — ready to spring back to life the moment you press the remote or open an app. The TV is waiting for a signal. The game console is waiting for a voice command. The cable box is always on because your provider needs it that way.
Each device in standby draws somewhere between 1 and 25 watts continuously. That doesn't sound like much. But run the math:
15 watts × 24 hours × 30 days × $0.14 per kWh = $1.51 per month
For one device. Now count the standby devices in your house. Most households have 15–25 of them. Suddenly phantom power is costing you $15–$40 a month — every month, whether you used those devices or not.
The U.S. Department of Energy estimates that standby power accounts for 5–10% of the average home's electricity bill. On a $200 monthly bill, that's $10–$20 in pure waste.
Finding Your Biggest Offenders
The problem with phantom power is that it's invisible. You can't feel a device drawing 12 watts. You just see the electricity bill and wonder why it's always a little higher than you expected.
The Kasa EP25 smart plug changes that. It has built-in energy monitoring — plug a device into it, open the Kasa app, and you can see exactly how many watts that device is drawing right now. Not an estimate. The actual number.
This is how you find out that your cable box draws 17 watts around the clock, that the gaming console your kid "turned off" is pulling 9 watts, and that the coffee maker on the counter uses 3 watts just sitting there.
Once you can see the numbers, you can make decisions.
Typical standby power draws by device type:
| Device | Typical Standby Draw | |--------|---------------------| | Cable/satellite box | 12–20W (often always-on) | | Gaming console (PS5/Xbox) | 0.5–2W sleep, up to 10W quick-start | | Desktop computer | 2–10W | | Television (50"+) | 0.5–3W | | Coffee maker | 1–5W | | Phone charger (plugged in, no phone) | 0.1–0.5W | | Microwave | 2–7W (just the clock) | | Home theater receiver | 15–30W standby |
What a Smart Power Schedule Looks Like
The goal isn't to micromanage every device. It's to build a schedule so the heavy-standby devices are only drawing power when they might actually get used.
Here's a practical setup:
Home office power strip: connected to a smart plug, scheduled off at 7 PM (when you stop working) and back on at 7 AM. Everything connected — monitor, speakers, printer, desk lamp — cuts to zero overnight.
→ Shop smart plug for home office automation on Amazon
TV and entertainment center: scheduled off at midnight. If no one's watching by midnight, they're not going to be. Wake-on-demand still works in the morning.
Coffee maker: off via smart plug from 11 AM to 5 AM. It's not doing anything useful during those hours anyway.
Cable box: This one is harder — some cable providers require the box to stay on for guide updates. But during overnight hours (2–6 AM), you can safely cut it with minimal impact.
With three plugs and three schedules, you're cutting standby power from your biggest consumers. The setup takes 20 minutes. The savings run every month without you doing anything.
Smart Plug Options for Energy Monitoring
Not all smart plugs include energy monitoring. Here are the best options in 2026:
Kasa EP25 — Built-in energy monitoring, schedules, works with Google Home and Alexa. No hub required. About $17 each, often available in 2-packs for better value.
Kasa KP125M (Matter) — Kasa's Matter-compatible version with energy monitoring. Best if you're building a Matter-based smart home ecosystem.
Eve Energy — HomeKit + energy monitoring. The only major energy monitoring plug for Apple HomeKit users.
→ Shop Eve Energy smart plug on Amazon
Meross Smart Plug with Energy Monitor — Lower cost option, works with HomeKit, Alexa, and Google Home. Good budget choice.
Energy Monitoring Smart Plug Comparison
| Plug | Energy Monitor | Protocols | Smart Home | Price | |------|---------------|-----------|-----------|-------| | Kasa EP25 | ✓ | Wi-Fi | Alexa, Google | ~$17 | | Kasa KP125M | ✓ | Wi-Fi + Matter | Alexa, Google, HomeKit | ~$20 | | Eve Energy | ✓ | Thread/Bluetooth | HomeKit | ~$35 | | Meross Energy Monitor | ✓ | Wi-Fi | Alexa, Google, HomeKit | ~$15 |
For most households without HomeKit, the Kasa EP25 hits the best value mark. For Apple HomeKit users, Eve Energy is the clear choice.
Real Savings: What to Expect
Home office (monitor, speakers, printer): 35W standby × 12 hours/day × 30 days × $0.14/kWh = $1.76/month
Entertainment center (TV, receiver, cable box): 40W standby × 8 hours overnight × 30 days × $0.14/kWh = $1.34/month
Gaming console (quick-start mode): 10W × 16 hours/day × 30 days × $0.14/kWh = $0.67/month
That's roughly $3.77/month just from three smart plug schedules. Add the coffee maker, a second home office setup, and a spare TV — you're looking at $10–$18/month in real savings. The plugs pay for themselves in 2–3 months.
After three plugs in our entertainment center, home office, and kitchen: $18/month off the bill. $216/year.
The Energy Monitoring Piece Matters
There are cheaper smart plugs. But most of them don't show you the actual wattage draw, which means you're flying blind on whether the schedule is actually making a difference.
The EP25's energy monitoring turns this from a vague "save energy" experiment into something you can measure. You can see the before and after. You know which devices are worth scheduling and which ones barely draw anything in standby anyway.
That visibility is the part that makes it stick — and it's also just interesting. You'll discover that your cable box is your single biggest phantom draw, that the phone charger everyone worries about barely registers, and that the home theater receiver you use twice a week is costing you $3/month just sitting there.
FAQ
Does cutting standby power affect device performance? For most consumer electronics, no. TVs come back on in 2–3 seconds. Game consoles take a bit longer if you cut them completely, but the trade-off is worth it overnight. The one exception: cable boxes sometimes take a few minutes to reload their guide after full power cut. Many people cut cable boxes overnight and accept this trade-off without issue.
How do I know which devices to prioritize? Plug in and monitor for a week before making any scheduling decisions. The Kasa app shows cumulative kWh usage over time — sort by highest use to find your biggest savings opportunities. Cable boxes, home theater receivers, and gaming consoles in quick-start mode are almost always at the top.
Will smart plugs affect my Wi-Fi network? Each smart plug uses a small amount of Wi-Fi bandwidth. A household with 10–15 smart plugs will typically see no measurable impact on Wi-Fi performance. If you have an older, lower-end router, grouping plugs on 2.4 GHz (which has better range than 5 GHz for IoT devices) helps.
Can I use smart plugs with appliances like washing machines or dishwashers? Generally no — high-draw appliances (washer, dryer, dishwasher, HVAC) require dedicated circuits and shouldn't be run through smart plugs. Smart plugs are rated for 15A or 10A maximum. Stick to consumer electronics, lamps, and small kitchen appliances.
Is there a risk of smart plugs themselves drawing significant power? Smart plugs draw 0.5–2W themselves. This is negligible compared to the standby loads they're managing, but it's worth knowing: you're not getting "zero" standby load from the plug itself.
The Bottom Line
Phantom power is a real cost that most homeowners never think about. Smart plugs with energy monitoring make it visible — and schedulable. The payback period is 2–3 months. The ongoing savings compound every year you have them installed.
If you're building out a smart home, start with smart plugs as your first purchase — they're inexpensive, instant to install, and start saving money on day one.