What Summer Power Costs Look Like in Fullerton
Summer energy bills in Fullerton can climb significantly compared to milder months. While spring electric bills average around $90, costs rise sharply in June, July and August. The average July electric bill in Fullerton is about $220, over double the cost of more temperate months.
Fullerton residents can expect their power bills to peak in July or August, when temperatures routinely top 90°F. Air conditioning becomes a necessity during these hot summer stretches. Households may see their energy use and costs double during this period compared to winter lows.
While exact bills vary based on home size, cooling habits, and energy rates, most Fullerton families budget at least $500 extra for electricity over the summer season. Larger homes with older cooling systems may spend $300+ per month on energy in July and August alone.
Why Are Energy Bills So High in Fullerton During the Summer?

Several factors drive up summer energy bills in Fullerton. The main culprit is increased air conditioning use. As temperatures climb into the 90s, A/C systems have to run frequently to maintain a comfortable indoor environment. Older, less efficient units work even harder, consuming more power.
Fullerton’s climate and geography exacerbate cooling demands. As an inland city, it lacks the moderating coastal influence that keeps temperatures milder in beach towns. The many hills and valleys around Fullerton also limit wind and trap heat. Homes absorb solar energy throughout the day, and the lack of shade trees in some neighborhoods offers little relief.
Other summer-specific energy needs add to costs as well. Pool pumps often run longer to keep water clean and algae-free. Irrigation systems work overtime to maintain lawns. Some families use more hot water for showers after sweaty days outside. Even electric vehicle charging can tick up during summer road trip season.
Sample Monthly Bill Breakdown
To illustrate where summer energy costs come from, here’s a sample July electric bill breakdown for an 1,800 square foot Fullerton home with typical A/C use:
Component | Cost | Percent |
---|---|---|
Cooling | $140 | 58% |
Appliances | $40 | 17% |
Electronics | $25 | 10% |
Lighting | $20 | 8% |
Water Heating | $15 | 6% |
Total | $240 | 100% |
Expect cooling to account for 50–60% of your July energy bill in Fullerton. Air conditioning is by far the biggest component, often exceeding the combined cost of appliances, electronics, lighting and water heating during peak summer months.
Ways to Lower Summer Energy Bills
While summer energy bills are unavoidably higher, Fullerton residents can take steps to control costs:
- Sign up for off-peak billing and shift energy use to lower-cost hours
- Install a smart thermostat to automate A/C and avoid over-cooling
- Have your ducts professionally sealed to improve cooling efficiency
- Plant shade trees or add awnings to block solar heat gain
- Upgrade to energy efficient appliances and LED lighting
🏆 Energy Tip: Set your thermostat to 78°F during the day and use ceiling fans to feel cooler. Every degree above 72°F saves 3% on cooling costs.
Time-of-Use Pricing in Fullerton
Some Fullerton utility providers like Southern California Edison offer Time-of-Use pricing plans. Under TOU billing, energy rates vary based on the time of day and season.
Summer weekday afternoons are most expensive, while nights and weekends cost less. For example, peak rates from 4-9 PM might cost 48¢/kWh, compared to just 28¢/kWh during off-peak hours. Shifting energy-intensive activities like laundry and EV charging to mornings, nights or weekends can notably lower bills.
Customers usually need to actively opt into TOU plans. While not ideal for everyone, these rate structures reward those who can adjust their energy habits. Households with solar panels or EVs often benefit the most from time-variant pricing.
Summer Cooling FAQs
Q: How much more are summer electric bills vs. spring in Fullerton?
A: Summer cooling costs often add $150+ to monthly electric bills compared to the April/May average. Total energy costs can easily double during July and August.
Q: Does solar help with summer energy bills?
A: Yes, solar panels can significantly offset summer energy costs. A properly sized system often covers 50-90% of cooling needs. Excess energy can also be sold back to the grid for credits.
Q: What’s the best thermostat temp for summer savings?
A: Aim to set your thermostat to 78°F or higher when home during the day. Raise the temperature 7-10° when away. Avoid setting your thermostat below 72°F, as costs rise quickly at cooler settings.
Smart Cooling Prep for Fullerton Summers
With average July electric bills topping $220 in Fullerton, it pays to plan ahead for summer cooling costs. Budget an extra $150-300 per month for A/C needs during peak season.
Beyond that, adopt energy-savvy cooling habits. Opt into off-peak rates, raise your thermostat to 78°F, and shift chores to cheaper hours. Seal cooling leaks and consider strategic upgrades like a smart thermostat, shade trees, or duct work. With some preparation, you can keep summer bills in check while still staying cool.