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Eversource CT's current standard service rate is 11.19¢ per kilowatt-hour (kWh). This rate is set through competitive wholesale auctions and remains fixed until the next adjustment period in July 2025. Competitive supplier offers currently start as low as 9.67¢/kWh, providing potential savings opportunities for Connecticut electricity consumers.
Did you know Connecticut households who switched from Eversource in early 2023 saved an average of $436 over six months? When Eversource's standard rate spiked to 24.17¢/kWh, customers who chose alternative suppliers paid just 13.78¢/kWh on average – a 43% discount. This significant price gap narrowed in July 2023 when Eversource's rate dropped, highlighting the importance of timing and market awareness when making energy decisions.
This guide breaks down exactly how Eversource's electricity rates are determined, why they can change dramatically twice a year, and how you can leverage this knowledge to make smarter energy choices. Whether you're a homeowner trying to lower your bills, a business manager optimizing energy costs, or a market analyst tracking industry trends, you'll find actionable insights backed by real market data and actual customer savings.
Here's what makes this analysis different: while most resources simply tell you current rates, we'll show you the entire system behind those numbers—from the competitive wholesale auctions that set Eversource's rates to the market forces that drive supplier offers. You'll see precisely what happened during the unprecedented price swings of 2023-2024, how hundreds of thousands of Connecticut customers responded, and what they actually paid compared to Eversource's standard rate.
Ready to become an informed energy consumer? Use the navigation menu to jump to specific topics, or start from the beginning for the complete picture. Need just the current numbers? Visit our Eversource CT dashboard for today's rates and market trends.
Remember that dramatic price spike that cost customers who didn't switch an extra $436? It wasn't random—it was the direct result of Eversource's procurement system. Understanding this system is your first step toward avoiding costly surprises in the future.
Eversource sets electricity rates through competitive auctions held twice yearly. In these auctions, power generators, investment banks, and energy traders bid to supply electricity. Eversource secures power in stages, buying portions in multiple auctions to reduce market risk. The weighted average price from these auctions becomes the standard service rate that customers pay. Rates change on January 1 and July 1 each year, reflecting the results of these procurement auctions.
Your monthly Eversource CT electricity bill has two main parts: supply charges and delivery charges. While delivery charges are set through regulatory processes, you have a choice when it comes to supply. You can either stay with Eversource's "standard service" rate or choose a different supplier.
To set the standard service rate, Eversource conducts competitive auctions where major players in the electricity market—generation companies, investment banks, and energy traders—compete to supply power. These auctions determine the rate you'll pay if you stick with Eversource's standard service.
Another auction took place in January 2025, but those results won't be public until April. This auction likely secured most of Eversource's remaining power needs for 2025, so it will strongly influence where rates go next.
The chart below reveals the full story behind Eversource's price volatility. Pay special attention to January 2023, when the blue line (auction-determined price) jumped dramatically. This procurement approach created the conditions for the 24¢/kWh rate that cost standard service customers substantially more than those who switched to alternative suppliers.
Eversource's auction system creates both risks and opportunities for informed consumers:
Now that you understand how Eversource's auction system sets rates, let's explore what this means for your shopping options. The auction system we just examined creates windows of opportunity where savvy consumers can secure better rates than Eversource offers.
| Service Type | Current Rate (¢/kWh) | Contract Length | Rate Changes |
|---|---|---|---|
| Eversource Standard Service | 11.19¢ | No contract | Changes twice yearly (Jan/July) |
| Lowest Competitive Offer Town Square Energy | 9.67¢ | 4 months | Fixed for contract duration |
| Average Competitive Offer | 13.04¢ | 12 months | Fixed for contract duration |
The data proves these savings opportunities are real. During the 2023 price spike, Connecticut customers who switched to alternative suppliers paid an average of just 13.78¢/kWh compared to Eversource's 24.17¢/kWh—saving the typical household $436 over six months. And while today's price differences aren't as dramatic, meaningful savings opportunities still exist.
Connecticut makes it surprisingly easy to compare and switch electricity suppliers. Your first stop should be the Energize CT Rate Board—a state-run website that lists all available offers and walks you through the switching process if you find a better deal.
Want more context? Our Eversource CT data dashboard takes this same rate board data and adds historical trends. You can see how supplier rates have changed over time and make more informed decisions about contract length and timing.
The chart below shows current supplier offers as of March 2025. Each point represents a different offer, arranged by contract length and rate. The dotted line shows Eversource's current rate (11.19¢/kWh) for comparison. Notice how the best 6-month offers are currently about 1.5¢ below Eversource's rate—enough to save the average household around $10 per month.
The current market presents an interesting timing decision for Connecticut consumers. With Eversource rates expected to decrease in July 2025 (based on recent auction results), here's how to approach your options:
Remember that switching only affects your supply charges—about half of your total bill. To compare offers properly, use the Energize CT Rate Board, which standardizes all offers and makes switching straightforward. And check our data dashboard regularly to stay informed about changing market conditions.
Seeing current offers is helpful, but understanding how these offers evolve over time reveals deeper insights about market conditions and can help you make smarter timing decisions about when to shop for electricity.
The chart below tracks two key market indicators that tell a fascinating story about supplier behavior:
Notice the growing gap between these two lines over recent months. While the average 12-month offer has been creeping upward to around 12.5¢/kWh, the lowest available offer has steadily dropped to below 9.7¢/kWh. This widening spread tells us we're in a period of increased competition, with some suppliers using aggressive pricing to win customers.
This difference in trends is key to understanding today's shopping opportunity. The average offer reflects suppliers' general assessment of market conditions, while the lowest offers show how far some suppliers will go to attract customers in a competitive environment. Currently, the most aggressive suppliers are offering rates nearly 2.8¢/kWh below the market average—a significant discount that translates to about $20 monthly for the average household.
These trends also help explain the relationship between Eversource's rates and supplier behavior. Eversource builds its supply portfolio gradually through auctions spread months apart—a strategy that helps smooth out market volatility. In contrast, supplier offers reflect today's view of future prices, which can adjust rapidly as market conditions change.
We saw this dynamic play out dramatically in 2023. Look at the auction results chart above—Eversource's earlier procurements locked in higher prices, leading to that 24¢/kWh spike in their standard service rate. But suppliers could immediately adjust to falling wholesale prices, creating that significant savings opportunity for customers who switched.
For the most up-to-date market data and trends, visit our data dashboard, which is updated daily with the latest supplier offers and market indicators.
We've seen how Eversource's auction system creates price volatility and how suppliers respond with competing offers. But does this actually drive customer behavior? The data tells a remarkable story about how Connecticut consumers react when prices change significantly.
Connecticut's standard service rate is the default electricity supply price that customers pay if they don't choose a competitive supplier. This rate is determined by Eversource through competitive wholesale auctions and changes twice yearly (January and July). The current standard service rate is 11.19¢/kWh for Eversource customers. By law, Eversource cannot profit from the supply portion of your bill—they pass through the auction-determined wholesale cost directly to consumers.
The chart below tracks the number of Eversource customers choosing alternative suppliers over time. What stands out immediately is the dramatic spike in early 2023—the exact moment when Eversource's rate jumped to 24¢/kWh while suppliers offered rates around 13.8¢/kWh.
The numbers are striking: from November 2022 to April 2023, the number of residential customers with alternative suppliers nearly tripled from approximately 90,000 to over 250,000. This mass exodus from Eversource's standard service represents one of the largest customer migrations in Connecticut's electricity market history.
Equally telling is what's happening now. Since July 2024, we've seen a steady decline in shopping customers as Eversource's rates have become more competitive. This return to standard service confirms that Connecticut consumers are price-sensitive and will move back and forth as market conditions change.
For you as a consumer, this pattern offers valuable perspective. While the current price difference between Eversource (11.19¢) and the best supplier offers (around 9.7¢) isn't as dramatic as during the 2023 spike, it's still significant enough that some consumers find it worthwhile to switch. The fact that many customers have returned to standard service in recent months suggests you should carefully evaluate whether the current savings justify the effort of switching.
Looking ahead to July's expected rate change, history suggests there may be less incentive to switch then—but market conditions can change rapidly. Our data dashboard lets you monitor these trends in real-time so you can time your decisions optimally.
Beyond understanding how many customers choose competitive supply, seeing how customers distribute across different suppliers reveals the healthy diversity in Connecticut's electricity market. The supplier-level data demonstrates how consumers benefit from having multiple reputable options.
The chart below shows customer counts by supplier over time, illustrating how Connecticut's robust competitive market has evolved. Each colored segment represents a different supplier's customer base, all of which offer valuable alternatives to standard service.
Constellation Energy (blue) has established a strong presence with consistent customer numbers throughout market fluctuations, demonstrating their commitment to the Connecticut market. Meanwhile, suppliers like Town Square Energy (green) and Direct Energy (pink) showed impressive growth during the 2023 market expansion, successfully connecting with customers seeking alternatives during the price spike.
Each supplier brings distinct offerings to the market, contributing to a healthy competitive environment that ultimately benefits consumers through enhanced choice and innovative service options.
Connecticut consumers can approach supplier choices with confidence, thanks to:
Whether you choose to stay with Eversource's standard service or select one of these competitive suppliers, Connecticut's electricity market is designed to give you meaningful choices backed by strong consumer protections. Our data dashboard lets you explore current offers from all of these suppliers to find the option that best suits your needs.
Connecticut's electricity market offers a powerful lesson in how market structures, timing, and information affect real household budgets. The data tells a clear story:
The data consistently shows that price signals drive customer behavior—when significant savings are available, Connecticut consumers actively switch, and when differences narrow, many return to standard service. This rational response demonstrates that consumers benefit from having both Eversource's standard service and the diverse array of competitive suppliers available in this well-regulated market.
Electricity markets are dynamic, with conditions and opportunities changing regularly. To make the most informed decisions:
As we've seen from the 2023 market dynamics, electricity pricing can change significantly, creating both risks and opportunities for consumers. By monitoring the market regularly, you can make decisions based on current conditions rather than outdated information.
Based on our analysis of auction results, supplier trends, and customer behavior patterns, here's what to watch for in Connecticut's electricity market:
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