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Understanding Your SRP Bill: What's Inside

The Salt River Project (SRP) bill arrives monthly and contains several key sections that tell you about your electricity use, charges, and account details. Many people find their bills confusing because they don't know what each section means or why certain charges appear. This guide section explains the main parts of an SRP bill so you can understand what you're paying for.

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Your SRP bill typically opens with account information at the top, including your account number, service address, and billing period dates. This section confirms the property being billed and the specific dates covered by this bill—usually a month of service. Below that, you'll find your meter reading information, which shows how much electricity your home or business used during the billing period. The bill displays both your previous meter reading and your current reading, with the difference representing your consumption in kilowatt-hours (kWh).

The charges section breaks down what you're paying. This includes a customer charge (a fixed monthly fee), energy charges based on your usage, and any demand charges if applicable. Many SRP customers also see transmission and distribution charges, which cover the cost of maintaining the power lines and infrastructure that deliver electricity to your property. Depending on your rate plan, you may also see time-of-use charges that vary based on when you used the electricity—peak hours typically cost more than off-peak hours.

Some bills include additional line items such as taxes, regulatory recovery charges, or credits from solar panels if you have rooftop solar installed. Understanding these sections helps you track where your money goes and identify potential savings opportunities. Your bill also shows your payment due date and current balance owed. At the bottom, SRP typically provides contact information and usage graphs showing your consumption compared to previous months or years.

Practical Takeaway: Spend a few minutes reviewing each section of your bill line by line. Take note of the meter reading, total kWh used, and the breakdown of charges. This foundation makes it much easier to understand changes from month to month and to identify unusual spikes in your usage or charges.

How SRP Rate Plans Affect Your Monthly Cost

SRP offers several different rate plans to residential and commercial customers, and your choice of plan directly affects how much you pay each month. Not all customers have the same rate plan—your plan depends on factors like when you signed up for service, the time of year, and whether you've made any rate plan changes. Understanding your current plan and how it calculates your bill is important for recognizing costs and exploring potential changes.

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Standard plans typically include a customer charge and an energy charge based on your total monthly usage. Under these plans, you pay a set price per kilowatt-hour regardless of when you use the electricity. This means running your air conditioner at noon costs the same per kWh as running it at midnight. The advantage of standard plans is simplicity—your bill is straightforward and easy to predict. However, standard plans don't incentivize using electricity during lower-demand times of day.

Time-of-use (TOU) plans charge different rates depending on when you use electricity. These plans typically divide the day into peak hours (when demand is highest and electricity is most expensive), off-peak hours (when demand is lower and electricity costs less), and sometimes super off-peak hours (the cheapest times). For example, peak hours might run from 3 p.m. to 8 p.m. on weekdays, while off-peak hours cover nights and early mornings. Time-of-use plans reward customers who shift their usage to cheaper hours by running appliances, charging vehicles, or cooling their homes during off-peak times.

SRP also offers specialized plans for customers with electric vehicles, solar panels, or storage systems. EV plans may include special charging rates during night hours when electricity is cheaper and the grid has more capacity. Solar plans account for the electricity you send back to the grid and may credit or pay you for that excess generation. Understanding which plan you're on and how its rates work helps explain your monthly bill and suggests where you might reduce costs through behavioral changes or timing adjustments.

Practical Takeaway: Locate your rate plan name on your bill or contact SRP to confirm which plan you're on. Once you know your plan, request a detailed explanation of when peak and off-peak hours occur and what rate you pay during each period. This information lets you identify the best times to run high-energy appliances and potentially lower your bill through timing adjustments alone.

Identifying High-Usage Months and Seasonal Patterns

Your electricity usage varies significantly throughout the year, and in Arizona, the biggest driver of high bills is usually air conditioning. Understanding seasonal patterns helps you recognize whether a high bill represents truly abnormal usage or is simply part of the normal cycle in your region. Most SRP customers see their highest bills during summer months (June through September) when cooling demands peak, and secondary high usage in winter months (December through February) in some areas where heating is needed.

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Summer months in Arizona can be brutally hot, with temperatures regularly exceeding 100 degrees Fahrenheit. During these months, air conditioning systems run nearly continuously to maintain comfortable indoor temperatures. An air conditioner can account for 40 to 60 percent of a home's total electricity use during peak cooling season. If you live in an older home with inefficient cooling systems, aging insulation, or large windows that admit heat, your summer bills may be particularly high. A single summer month's bill might be two to three times higher than a mild spring month's bill, which is completely normal for Arizona residents.

Winter usage patterns vary depending on your location in the SRP service area and your home's heating system. If you have electric heating, your winter bills may rise significantly during the coldest months. Homes with natural gas heating typically see smaller winter increases because gas provides heat more affordably than electric resistance heating. However, even gas-heated homes use more electricity in winter for lighting (since days are shorter) and other appliances.

By reviewing 12 months of historical usage data, you can establish a baseline understanding of your personal patterns. Many SRP bills include a usage comparison graph showing your current month against the same month from the previous year and a 12-month history. If your April bill is consistently around 800 kWh and suddenly jumps to 1,400 kWh one year, that increase might signal a problem like an inefficient air conditioner or a refrigerator that isn't cooling properly. Conversely, if your June bill is consistently 2,200 kWh, that's your expected normal peak usage and not cause for concern.

Practical Takeaway: Collect your SRP bills for the past 12 months and create a simple chart showing the month and usage for each bill. Look for patterns—which months are consistently highest, and which are lowest? Use this baseline to recognize genuine anomalies in future months that might warrant investigation.

Common Charges Beyond Basic Energy Costs

Beyond the basic energy charge for kilowatt-hours consumed, SRP bills include several other charges that contribute to your total cost. These additional charges can confuse customers because they appear separately and aren't always clearly explained. Learning what these charges represent helps you understand the true cost of electricity service and how different factors beyond simple usage affect your bill.

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The customer charge is a fixed monthly fee that SRP assesses regardless of how much electricity you use. This charge covers the cost of maintaining your connection to the grid, reading your meter, sending your bill, and maintaining customer service infrastructure. Customer charges typically range from $10 to $15 per month for residential customers but can be higher for commercial accounts. You pay this charge even during months when you use very little electricity, and it doesn't change based on your usage—it's the same every month.

Demand charges are common on commercial and large industrial accounts but less common on residential bills. These charges are based on your peak power demand during a specific period rather than your total energy consumption. For example, if you run your air conditioner, water heater, and clothes dryer all at the same time for an hour, your demand spikes. Demand charges encourage businesses to spread their electricity use more evenly throughout the day rather than creating high-demand spikes.

Transmission and distribution charges cover the cost of the physical infrastructure that delivers electricity to your home—the power lines, transformers, poles, and maintenance of the grid system. These charges are typically calculated per kilowatt-hour, so higher usage results in higher transmission and distribution charges. Regulatory recovery charges may appear on your bill to recover specific costs approved by the Arizona Corporation Commission, such as investments in grid improvements or renewable energy programs. Taxes (state and local