How many watts does a refrigerator use? (2026 numbers by type and age)

A typical full-size refrigerator runs at 100–200 watts when the compressor is active and averages about 1.0–1.5 kWh per day over a full 24-hour cycle. Older pre-2000 models and large French-door units can push 300–400 running watts, nearly doubling your monthly electricity cost from this one appliance.

Last verified: August 2026 by Helios Energy Global.

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Running watts vs. starting watts: why both numbers matter

Your refrigerator doesn't run at full power all the time. The compressor cycles on and off — typically 8–12 minutes on, 20–30 minutes off — to hold temperature. The watt figure you see on the nameplate or spec sheet is usually the running wattage during a compressor-on cycle.

Starting (surge) watts are a different story. When the compressor motor kicks on, it pulls 3–5× its running draw for a brief 1–3 second burst. A fridge that runs at 150 watts may surge to 700–900 watts at startup. This matters when you're sizing a battery backup system or a generator — the inverter has to handle the surge, not just the steady-state draw.

For solar and battery design, we use both numbers: running watts to calculate daily kWh consumption, and starting watts to confirm the inverter or battery can handle the motor spike without tripping.

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Watts by refrigerator type, size, and age

Fridge Type	Size	Model Era	Running Watts (est.)	Start Surge (est.)	kWh/Day (est.)
Mini-fridge / dorm	1.7–4.5 cu ft	Any	30–100 W	150–400 W	0.2–0.5 kWh
Top-freezer, basic	14–18 cu ft	Pre-2000	200–400 W	800–1,400 W	1.5–2.5 kWh
Top-freezer, basic	14–18 cu ft	2010–present	100–180 W	400–700 W	0.8–1.3 kWh
Side-by-side	22–28 cu ft	Pre-2000	300–450 W	1,000–1,600 W	2.0–3.0 kWh
Side-by-side	22–28 cu ft	2015–present	150–250 W	600–900 W	1.0–1.8 kWh
French door / bottom freezer	25–30 cu ft	2015–present	100–200 W	500–900 W	0.8–1.5 kWh
French door, Energy Star certified	25–30 cu ft	2020–present	80–150 W	400–700 W	0.6–1.2 kWh
Built-in / pro-style (Sub-Zero style)	36–48 cu ft	Any	200–500 W	800–1,800 W	1.5–3.5 kWh

All figures are estimates based on EIA residential consumption data and ENERGY STAR certification benchmarks. Your actual draw depends on ambient temperature, door-open frequency, and thermostat setting.

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How many amps does a refrigerator use?

Amps are just watts divided by voltage. At the standard U.S. household voltage of 120V:

• 100-watt running load = ~0.8 amps
• 200-watt running load = ~1.7 amps
• 400-watt running load = ~3.3 amps
• 900-watt start surge = ~7.5 amps

Most full-size refrigerators are rated for a 15-amp dedicated circuit, even though they rarely pull more than 3–4 amps during normal operation. The dedicated circuit requirement exists specifically to handle that startup surge without tripping a shared breaker.

If you're wiring a new kitchen or adding a second fridge in a garage — common in Southern California homes — plan on a dedicated 15A or 20A circuit per unit.

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Monthly electricity cost: SCE vs. LADWP

This is where utility territory makes a real difference. SCE customers in Los Angeles County, Orange County, and the Inland Empire pay roughly 34–35¢/kWh on average (blended across baseline and above-baseline tiers, or a TOU plan). LADWP customers in the City of Los Angeles typically pay around 22¢/kWh — meaningfully less.

Estimated monthly cost for a modern full-size fridge (1.2 kWh/day average):

• SCE: 1.2 kWh × 30 days × $0.345 = ~$12–$13/month
• LADWP: 1.2 kWh × 30 days × $0.22 = ~$8/month

Estimated monthly cost for an older, inefficient fridge (2.5 kWh/day):

• SCE: 2.5 × 30 × $0.345 = ~$26/month
• LADWP: 2.5 × 30 × $0.22 = ~$17/month

SCE's 4–9 PM peak window (on TOU plans) matters here too. Refrigerators run continuously, including during peak hours, so SCE TOU customers on plans like TOU-D-PRIME pay the higher peak rate on whatever portion of the fridge's daily cycle falls in that window. On a TOU plan, the effective blended rate for a always-on appliance can push toward 38–42¢/kWh if you're in a higher usage tier.

If you're an SCE customer frustrated by refrigerator costs, this is one reason pairing solar with a battery makes financial sense — you can charge the battery cheaply during off-peak hours and run the house (fridge included) from storage during the expensive 4–9 PM window.

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Energy Star: how much do you actually save?

ENERGY STAR-certified refrigerators use at least 15% less energy than the federal minimum standard, and the "Most Efficient" tier models can use 30–40% less than a standard unit of the same size.

For a Southern California household replacing a 10-year-old side-by-side with an Energy Star French-door model:

• Old fridge: 2.0 kWh/day → **$248/year on SCE**
• New Energy Star fridge: 1.0 kWh/day → **$124/year on SCE**
• Estimated annual savings: ~$100–$125 on SCE; ~$65–$80 on LADWP

A new Energy Star refrigerator typically costs $800–$2,000. The payback from energy savings alone is 8–15 years — not a slam-dunk on its own. But if you're also sizing a solar system, a more efficient fridge means a slightly smaller (cheaper) system to cover your load. That's where the math gets interesting — see our home electricity load guide for how appliance efficiency stacks up in system sizing.

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Solar and battery sizing: what does your fridge mean for your system?

When we size a solar system for a Southern California home, the refrigerator is one of the baseline loads — it runs 24/7, it can't be shifted off-peak easily, and it's non-negotiable during an outage.

For solar system sizing: A modern fridge at 1.2 kWh/day adds roughly 0.4–0.5 kW of solar panels to your system requirement (assuming ~5 peak sun hours/day in SoCal). An older energy-hog fridge at 2.5 kWh/day pushes that to 0.8–1.0 kW just for the fridge. This is why we always audit your actual appliances before recommending a system size — see our design and savings tool.

For battery backup sizing: The most common question we get: will a Powerwall keep my fridge running during an outage?

A Tesla Powerwall holds 13.5 kWh usable. A modern Energy Star fridge drawing 1.0–1.2 kWh/day would, in theory, run for 10–13 days on a full Powerwall — if that were the only load. In reality, you'll also be running lights, phone chargers, a router, and maybe a few fans, which cuts that down significantly. For a realistic whole-home critical-load estimate, read our dedicated page on how long a Powerwall lasts in an outage.

The startup surge (800–1,200 watts) is also relevant: Powerwall and most modern home battery inverters handle this comfortably. Older or cheaper battery systems with lower surge ratings may trip on compressor startup — always check the inverter's surge capacity before assuming any battery will run a fridge.

Key battery sizing rules of thumb:

• Fridge-only backup for 24 hours: ~1.5–2.5 kWh of battery capacity needed (with margin)
• Fridge + lights + router for 24 hours: ~3–5 kWh
• Whole critical-load panel for 24 hours: typically 5–10 kWh — see our battery sizing guide

If you want to understand how your refrigerator fits into your total home electricity picture, our what uses the most electricity in a home guide ranks every major appliance, and our how many watts to run a house page walks through whole-home load calculations.

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Frequently asked questions about refrigerator wattage

How many watts does a refrigerator use per hour?

A refrigerator doesn't draw a steady wattage every hour — the compressor cycles on and off. When the compressor is running, a modern full-size fridge draws 100–250 watts. Averaged over a full hour (including the off cycles), effective draw is more like 40–100 watts per hour, or 1.0–1.5 kWh over a full 24-hour day.

How many amps does a full-size refrigerator use?

At 120V, a full-size refrigerator running normally draws 1–3.5 amps. The startup surge can hit 6–10 amps for 1–3 seconds. That's why the NEC requires a dedicated 15A or 20A circuit — not because the fridge needs 15A continuously, but to handle the motor surge without nuisance tripping.

How many watts does a mini-fridge use?

Mini-fridges (1.7–4.5 cubic feet) typically run at 30–100 watts and use 0.2–0.5 kWh per day. That works out to roughly $2–$6/month on SCE or $1–$4/month on LADWP. They're one of the most battery-friendly appliances to keep running during an outage.

Does a refrigerator use more electricity in a hot garage?

Yes — significantly more. A fridge in a 90°F garage works harder to maintain 37°F than one in a 72°F kitchen. Compressor run-time can increase by 30–50%, pushing daily consumption up by 0.3–0.8 kWh/day. In Southern California summers, a garage fridge can easily cost $5–$10/month more than the same unit indoors. Shade and ventilation around the unit help.

Will solar panels offset my refrigerator's electricity use?

Yes — a refrigerator using 1.2 kWh/day adds roughly 438 kWh/year to your load. In Southern California, one 400-watt solar panel produces approximately 500–600 kWh/year, so a single panel more than covers a modern fridge's annual consumption. Visit our solar cost and sizing page to see how this stacks up against your full bill.

Is it worth replacing an old refrigerator to save on electricity?

If your fridge is pre-2005, probably yes — especially on SCE. Older models can use 2–3× more electricity than a current Energy Star unit of the same size. At SCE rates of ~34–35¢/kWh, the savings can reach $100–$200/year. It also reduces the solar system size you'd need to cover your load, which has its own cost implications.

How does refrigerator wattage affect my solar system size?

Every 1 kWh/day of continuous load adds roughly 0.3–0.5 kW of solar capacity to your system requirement in SoCal (based on ~5 peak sun hours). Swapping an old 2.5 kWh/day fridge for a 1.0 kWh/day Energy Star model could reduce your needed system size by 0.5–0.75 kW — saving several hundred dollars on installation. Use our custom design tool to model your specific appliances.

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Next steps

• Book a free consultation and custom design — we'll audit your appliance loads and size a system that actually fits your home.
• See what uses the most electricity in a home — the full appliance-by-appliance breakdown for Southern California households.
• How many watts does it take to run a house? — whole-home load calculation, with SCE and LADWP examples.
• How long does a Powerwall last in an outage? — fridge, lights, and critical loads modeled by battery size.
• Explore home battery options — sizing, cost, and what to expect from backup storage in 2026.
• Get a solar cost estimate — current installed pricing for Southern California, with no federal tax credit assumptions baked in.
• Understand NEM 3.0 and how it affects your solar payback — critical reading if you're on SCE, PG&E, or SDG&E.