Fixed vs. Variable Electricity Rates: What's the Difference?
Fixed-rate plans lock in a set price per kWh for the length of your contract, while variable-rate plans let the price change month to month. Here's how each works and what to weigh before choosing.
A fixed-rate electricity plan charges the same price per kilowatt-hour (kWh) for the entire length of your contract. A variable-rate plan lets that price per kWh change from month to month based on market conditions and the supplier''s pricing decisions. The core difference is price stability: fixed rates stay the same until the term ends, and variable rates can move up or down at any time.
Both plan types deliver the same electricity through the same utility wires. The only thing that changes is how the supply portion of your bill is priced.
## What Is a Fixed-Rate Plan
A fixed-rate plan is an electricity supply contract that locks your price per kWh for a defined term, typically 6, 12, 24, or 36 months. During that term, the supply rate on your bill does not change, even if wholesale energy prices rise.
Key characteristics of a fixed-rate plan:
- The price per kWh is set in the contract and printed on your Electricity Facts Label or terms of service document. - The term has a defined start and end date. - Most fixed-rate contracts include an early termination fee if you cancel before the end date. - At the end of the term, the plan usually rolls to a month-to-month rate unless you renew or switch.
Fixed pricing does not mean your bill is the same every month. Your total bill still depends on how much electricity you use, plus delivery charges and taxes set by the local utility and regulators.
## What Is a Variable-Rate Plan
A variable-rate plan is an electricity supply contract with a price per kWh that can change from one billing cycle to the next. The supplier sets the rate each month, often influenced by wholesale market prices, seasonal demand, and their own pricing strategy.
Key characteristics of a variable-rate plan:
- No long-term price commitment from the supplier. - The rate can rise or fall each month without prior notice, subject to the terms in the contract. - Most variable plans are month-to-month with no early termination fee. - Introductory or "teaser" rates may apply for the first billing cycle before the standard variable rate takes effect.
Variable rates give flexibility to switch plans at any time, but they also transfer month-to-month price risk from the supplier to the customer.
## Key Differences
The main tradeoffs between the two plan structures are price stability, flexibility, and exposure to market swings.
- Price stability: Fixed rates stay the same for the full term. Variable rates can change every billing cycle. - Contract length: Fixed plans have a defined term. Variable plans are typically open-ended. - Early termination fees: Fixed plans usually include one. Variable plans usually do not. - Market exposure: Variable customers benefit if wholesale prices drop and pay more if prices rise. Fixed customers are insulated from both directions during the term. - Budgeting: Fixed rates make it easier to predict the supply portion of a bill. Variable rates make monthly cost harder to forecast. - Renewal behavior: Fixed plans require action at the end of the term to avoid rolling to a default rate. Variable plans stay in place until the customer changes them.
Neither structure is inherently cheaper. Which one costs less over time depends on when the plan was signed, the term length, and how wholesale prices move during the contract.
## Which Might Be Right for You
Choosing between fixed and variable rates comes down to how you value predictability versus flexibility.
A fixed-rate plan may fit if you:
- Want a predictable supply rate for budgeting. - Prefer to make a decision once and not revisit it for a year or more. - Want protection from rate spikes during high-demand seasons.
A variable-rate plan may fit if you:
- Are in a short-term living situation or expect to move soon. - Want to stay flexible so you can switch plans without an early termination fee. - Are comfortable monitoring your rate each month and switching if it rises.
Read the Electricity Facts Label or plan terms before enrolling. That document lists the rate, term, fees, and how the price is calculated.
## FAQ
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Frequently Asked Questions
What is the main difference between a fixed-rate and variable-rate electricity plan?
A fixed-rate plan locks the price per kWh for the length of the contract. A variable-rate plan lets the price per kWh change from month to month.
Can my fixed rate change during the contract term?
No. Under a fixed-rate contract, the supply rate per kWh stays the same until the contract''s end date, regardless of market conditions.
Do variable-rate plans have early termination fees?
Most variable-rate plans are month-to-month and do not include an early termination fee, but you should confirm this in the plan''s terms of service.
What happens when my fixed-rate contract ends?
Most fixed-rate plans automatically switch to a month-to-month variable rate at the end of the term unless you renew or choose a new plan. The supplier is required to notify you before the term ends.
Is a fixed or variable rate cheaper?
Neither is automatically cheaper. The lower total cost depends on the specific rates offered, the contract term, and how wholesale energy prices change during that period.