How Much Does It Cost to Run a Window or Portable AC?
Running a window or portable AC costs between $0.09 and $0.26 per hour of compressor time at 2026 rates, depending on the unit's size and efficiency.
9 min read
Electricity
Guides in the Electricity category — explained in plain English.
How to Tell If a Neighbor Is Stealing Your Electricity
If your electric bill spiked without a change in habits, a neighbor might be tapping your power—but a simple main-breaker test can prove it before you call the utility.
7 min read
Best Thermal Camera for DIY Home Energy Audits (Honest Limits Included)
A ~$116 USB-C thermal camera can find drafts, cold spots, and missing insulation patches — but it cannot see inside walls or read R-values. What the Thermal Master P1 can and cannot do, with the method that makes it work.
9 min read
Level 1 EV Charging: What It Actually Costs on Your Electric Bill
Level 1 EV charging — the 120V cord in the trunk — is just billed electricity, not free. Here is the honest outlet math, the monthly dollar range for a real commute, and how to measure your own car's draw instead of guessing.
12 min read
Best Home Energy Monitor in 2026: What to Buy After Sense's Exit
Sense stopped selling monitors in 2025, so the 2026 best pick depends on your question: free utility data, metering smart plugs, or the Emporia Vue 3 for circuit-level whole-home data.
9 min read
Kill A Watt Alternatives in 2026: 4 Ways to Measure an Appliance's Real Cost
The Kill A Watt P4400 is back in stock, but it is not the only way to measure what an appliance costs. The real alternatives — and when each one is the better tool.
8 min read
Sense Is Discontinued: What Owners Should Do and What to Buy Instead
Sense stopped selling its home energy monitor on December 31, 2025. What still works for owners, and the honest alternatives — from free utility data to the Emporia Vue 3.
7 min read
Smart Thermostats on Time-of-Use Plans: Where the Savings Actually Come From
A smart thermostat doesn't lower your rate — it changes when you buy power. How automation intersects with time-of-use pricing, what the math really depends on, and which features matter.
6 min read
Emporia Vue 3 vs Sense: How They Actually Differ (Impartial)
Emporia Vue 3 meters circuits directly; Sense guesses devices from mains data. An impartial comparison of install, channels, and failure modes.
8 min read
How Many Watts Does a Refrigerator Use? (and How to Measure Yours Exactly)
A fridge's running watts matter less than kWh per day. How to measure both with a plug-in meter — or a free one from the library — and price your own.
10 min read
Which Smart Plug Measures Energy Usage? (And Which Just Switch On and Off)
Most smart plugs only switch on and off. How to tell which ones actually measure watts and kWh — and what they can safely meter, including window ACs.
10 min read
Do Home Energy Monitors Save Money?
A whole-home monitor finds the changes that lower an electric bill — what CT-clamp monitors see, what they miss, and when the free app is enough.
12 min read
How Many kWh Does a House Use per Day? Averages by Home Size
The average US house uses about 30 kWh per day. See typical daily kWh by home size, what pushes usage up, and what your number means on the bill.
6 min read
What Time Is Electricity Cheapest?
Find the cheapest electricity hours for your time-of-use plan, plus a quick-reference table by plan type and off-peak habit checklist.
5 min read
Which Rate Plan Is Right: Fixed vs Variable vs TOU
A decision framework for residential utility rate plans: match your household's usage pattern to fixed, variable, time-of-use, or tiered pricing before you switch.
6 min read
How EV Charging Can Affect Your Electric Bill
Estimate EV charging electricity from your vehicle, driving, and utility rate plan instead of relying on a national cost average.
9 min read
Net Metering: How Solar Affects Your Electric Bill
Understand how exported solar electricity can be credited, which bill items to check, and why your utility's current tariff controls the outcome.
8 min read
Phantom Power Draw: How to Find and Reduce Standby Use
Learn what standby power is, how it is measured, and how to reduce avoidable plug-load energy use.
8 min read
How to Review a Demand Charge on an Electricity Bill
Identify a demand charge from the applicable tariff, distinguish billed demand from energy use, and obtain the account-specific calculation from the provider.
7 min read
Whole House Generator vs Portable: True Cost
Compare portable and permanently installed backup-power options through a site-specific safety, load, installation, and written-quote review.
9 min read
How to Review a Utility Budget-Billing Plan
Review a utility budget-billing or level-pay offer using the provider's written terms, actual charges, settlement rules, and payment options.
6 min read
Understanding kWh Usage on Your Electric Bill
Learn how to compare kWh, billing days, and rate-plan charges on your own electric statement without relying on generic appliance-cost tables.
7 min read
Fixed vs. Variable Utility Rates: Which to Pick
Compare electricity offers using the current tariff, complete contract terms, and your own usage history instead of generic fixed-versus-variable rules.
7 min read
How to Read Your Electric Bill (Line by Line Guide)
Use your billing period, kWh, meter-read status, rate plan, and itemized charges to understand what an electric statement is telling you.
9 min read
How to Review a Time-of-Use Electricity Plan
Compare a time-of-use electricity plan using the utility's current schedule, tariff, and your own interval or bill history.
8 min read
How to Review Tiered Electricity Rates on Your Bill
Review block or tiered electricity rates from the tariff and itemized statement, then compare billed usage, thresholds, and all other charges.
6 min read
Electric Bill Breakdown: Every Charge Explained
Confused by your bill? We decode the charge categories you will find on a U.S. electric bill--supply, delivery, customer charges, and taxes--and show you how to check each one against your own rate plan.
12 min read
How Do Smart Meters Work? (And Should You Trust Them?)
Learn what a smart meter can report, how to compare its reading with your bill, and which questions should go to your utility.
6 min read
How to Lower Your Electric Bill Without Solar
Lower your electric bill without solar using verified measures ranked by leverage: thermostat setbacks, water heating, ducts and filters, standby loads, and your rate plan.
5 min read
How to Read an Electric Meter (Dial & Digital Guide)
Learn how to record an electric-meter reading, compare it with a bill, and ask your utility about meter-specific details.
6 min read