Why Is My PG&E Bill So High in Modesto, CA?

Peak vs. Off-Peak Electricity Costs in Modesto

PG&E Time-of-Use (TOU) Rates

PG&E's standard residential TOU rate plan divides the day into pricing windows based on grid demand. For Modesto customers in 2026, typical rates look like this:

Peak (4–9 PM weekdays): ~$0.45–$0.55/kWh Off-Peak (all other hours): ~$0.25–$0.35/kWh Super Off-Peak (overnight): ~$0.15–$0.22/kWh

With sweltering valley heat, the peak window is exactly when AC demand is highest — creating a situation where you use the most electricity at the most expensive time of day.

How TOU Rates Affect Your Monthly Bill

On a TOU rate plan, when you use electricity matters as much as how much you use. A household that consumes 800 kWh per month could pay $120 or $220 depending entirely on what time of day that usage occurs.

In Modesto, where sweltering valley heat keeps AC running into the evening hours, most of that usage lands in the peak window — which is why many residents are surprised to see bills that seem disproportionate to their actual consumption.

Use Climapp's free tool to see exactly how much of your usage falls in peak vs. off-peak hours based on your actual bill.

Why PG&E Bills Spike in Modesto

Modesto’s agricultural valley climate means long, hot cooling seasons where households run AC from late May through early October.

Beyond temperature, several household factors combine to push Modesto bills higher:

• Tiered rate overages — once you exceed your baseline allowance, rates jump significantly; most Modesto households exceed this in summer
• Peak-hour concentration — dishwashers, laundry, and cooking during evening hours stack on top of cooling loads
• Phantom loads and standby power — always-on devices and chargers contribute a steady background cost
• Rate schedule mismatch — some customers are on flat-rate plans that penalize low off-peak usage

Understanding which tier your usage falls into is the first step to cutting costs. See your exact breakdown with Climapp's free analyzer.

Hidden Drivers of High PG&E Bills

Baseline Allowance and Tiered Pricing

PG&E assigns every residential customer a monthly baseline allowance — a modest amount of electricity at the lowest Tier 1 rate. In Modesto, most households burn through this allowance quickly during summer, triggering Tier 2 and Tier 3 rates that can be 40–80% higher than Tier 1.

This tiered structure means that the marginal cost of each additional kWh rises as you use more — making high-usage months disproportionately expensive compared to moderate months.

Rate Changes and Annual Adjustments

PG&E has increased rates significantly over the past five years, and further increases are expected through 2026 and beyond. These adjustments reflect infrastructure investment, wildfire mitigation costs, and grid modernization programs — all of which are passed through to ratepayers.

Even if your usage stays flat year over year, your bill may still rise due to rate increases alone. Understanding your per-kWh rate is essential to projecting future costs.

How Solar Changes the Equation

For many Modesto homeowners, rooftop solar directly addresses the root cause of high bills: it offsets the kWh you would otherwise buy from PG&E at peak or Tier 2/3 rates. Depending on system size and local conditions, solar can reduce monthly electricity costs by 60–100%.

The economics depend on your specific usage, roof orientation, and local generation potential. Climapp's free calculator shows you a personalized solar savings estimate based on your actual bill data — no sales call required.

Frequently Asked Questions