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A backup battery that lowers your power bills
Base members enjoy consistent power and clear pricing, saving at least 15% vs ComEd’s Price to Compare.
- See your savings on your monthly ComEd bill.
- Shift your energy usage to the lowest priced hours.
Base provides the most affordable home backup on the market—up to 24 hours of outage protection, for 95% less than alternatives.
- Back up your home for up to 24 hours with reduced energy consumption.
- Automatically powers your whole home in the event of a power outage—no effort required.
Energy + Backup
Time-of-use (TOU) supply rate
On-peak rate: 15% savings vs. ComEd PTC
Off-peak rate: 18% savings vs. ComEd PTC
Prices as of June 1, 2026
Backup battery
One-time installation
Save at least 15% vs. ComEd’s Price to Compare
Home backup that kicks in automatically
Deliver more savings on your power bill
Support a more stable grid
Plan overview
One 25 kWh battery—get up to 24 hours of backup with reduced energy consumption
24-month plan
Energy rate at least 15% below ComEd’s PTC during on-peak
No Purchased Electricity Adjustment (PEA) charge as a Base member
Price details
- Installation fee
- $295
- On-peak rate
- 8.8¢/kWh
- Off-peak rate
- 8.5¢/kWh
What would cost you $13,000+ is $295
Save at least 15% vs. ComEd’s Price to Compare
You will still get billed by ComEd without any service interruptions.
The battery delivers the savings
It charges overnight when power is cheap, and runs your home when it’s expensive.
Home backup that kicks in automatically
When the grid goes down, your battery kicks in. Most members don’t even notice there was an outage.
No Purchased Electricity Adjustment charge
ComEd passes this fee through to customers and it can add up fast. Base covers it for members, so there’s no surprise fees on your bill.
Steady under pressure
Cut costs on good days. Stay on through bad ones.
When the grid is up and running.
Your Base battery optimizes your home’s energy use, while sharing with the grid during demand spikes. The result: lower monthly bills and whole home outage protection.
Trusted by 15,000+ members
What changes on your ComEd bill
On your ComEd bill, you'll see “Base Retail LLC” on the supply line. This is the cost of the actual electricity you use. This is the part that Base will handle for you.
ComEd | ||
|---|---|---|
| Plan type | Time-of-use supply | Fixed supply |
| Rate you pay | 8.8¢ on-peak 8.5¢ off-peakPrices as of June 1, 2026 | ~10.4¢ /kWh |
| Savings vs. ComEd's PTC | Yes, always at least 15% less than PTC | no |
| Renewal Rate Guarantee | Yes, guaranteed to renew lower than PTC | no |
| No additional fees | yes | Purchased Electricity Adjustment (PEAs) applied monthly |
| Whole home battery | Yes, for just $295 vs. $13k for comparable backup | no |
| Outage protection | Yes, up to 24 hrs | no |
How the savings actually happen
ComEd still delivers your power and sends the bill
Nothing about the physical grid changes. ComEd owns the infrastructure, manages outages, and sends you one bill — every month, same as always.
Base replaces the supply rate on your bill
On the supply line, you'll see "Base Retail LLC" instead of ComEd's default. On-peak rate: 8.8¢/kWh. Off-peak: 8.5¢/kWh. Both are at least 15% below what ComEd would charge you.
Your battery charges cheap and runs during peak hours
The Base battery charges overnight when power is cheapest — and you don't pay for that charging. During peak hours, when the rate is higher, it powers your home instead of the grid, delivering you a lower rate without changing anything about how you use electricity.
And when the grid goes down, your home keeps running
Same battery. When there's an outage, it automatically powers your home — up to 24 hours of backup. No generator, no gas, no noise.
Affordable reliable power is just a few clicks away
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We’re happy to answer all your questions
If you are raising a complaint to our team, you have the right to receive our response to your complaint in writing. Base will respond to your complaint as soon as possible, typically within (1) day and always within fourteen (14) days. You also have the right to file a complaint with the Illinois Commerce Commission at 1-800-524-0795 or at www.icc.illinois.gov, and with the Illinois Attorney General’s Consumer Fraud Hotline at 1-800-386-5438.
A negative balance on your Base supply means your credits exceeded your energy supply charges for that billing period. This can happen when Base uses your battery frequently to support the ComEd grid. Credits on your ComEd account roll forward to offset charges in future billing periods. Base handles this automatically. Base cannot independently issue refund checks for negative balances.
ComEd performs two roles: it delivers electricity to your home through its grid infrastructure, and it sends you one consolidated monthly bill.
What you’ll see on your ComEd bill:
Base Energy Supply Charge
The amount Base Retail LLC charges for supplying your electricity. Base sets this rate to be indexed at least 15% below ComEd’s price to compare.
ComEd Delivery Charges
Fees for ComEd’s infrastructure: power lines, distribution equipment, and grid maintenance. These are the same regardless of which energy supplier you choose. Base does not control these and receives no portion of them.
Why they’re listed separately
Your bill separates energy supply (Base) from delivery (ComEd). Both appear as distinct line items on your single ComEd bill.
Your energy bill comes from ComEd — not directly from Base. ComEd consolidates all charges into a single monthly statement. Here’s what you’ll see:
Base Energy Supply Charge
Base Retail LLC’s charge for supplying your electricity. Calculated as your monthly usage (kWh) × Base’s rate, which is indexed to be at least 15% below ComEd’s price to compare.
Battery Dispatch Credit (if applicable)
When Base uses your battery to support the ComEd grid during peak demand, you receive a credit. This appears as a line item on your ComEd bill.
ComEd Delivery Charges
Fees for maintaining the infrastructure that delivers electricity to your home (power lines, poles, transformers, meters). These are set by ComEd and the ICC — Base has no control over these charges and receives no portion of them.
Taxes & Other Fees
State and municipal taxes, the Illinois Renewable Portfolio Standard charge, and other regulatory assessments.
Base is Illinois’s only Alternative Retail Electric Supplier (ARES) that provides members with a home backup battery system — at little cost. Unlike traditional energy suppliers, Base makes money by using your battery to help stabilize the grid during peak demand. This lets Base offer energy rates at least 15% below ComEd’s price to compare — not by cutting corners, but by earning revenue from grid services rather than from you.
What you get as a Base member
- • A home battery system installed at your property (owned and operated by Base)
- • Energy supply from Base Retail LLC indexed to be at least 15% below ComEd’s price to compare
- • Backup power during outages
- • A single consolidated ComEd bill that includes Base’s energy supply charges alongside ComEd’s delivery charges
Your rate commitment is built into your Energy Service Agreement when you join Base. Base earns revenue by providing grid-balancing services through your battery, so your rate stays competitive without the need to profit from your energy usage.
Base Retail LLC (an affiliate of Base Power) supplies your electricity as an Alternative Retail Electric Supplier (ARES), with ComEd maintaining distribution and emergency management responsibility. Your energy rate is indexed to be at least 15% below ComEd’s price to compare. ComEd publishes their price to compare periodically, and Base’s rate adjusts accordingly.
Your energy supply charges appear on your monthly ComEd bill — not as a separate Base invoice. You pay ComEd directly for your energy.
Base Retail Product Offerings
Commonwealth Edison (ComEd) service territory | Illinois
The table below shows the highest and lowest time-of-use supply rates charged by Base Retail over the past twelve months. Historical pricing is not indicative of present or future pricing.
| Product | Effective date | End date | On-peak | Off-peak |
|---|---|---|---|---|
| Battery TOU Supply Plan | 06/01/2026 | Present | 8.8¢/kWh | 8.5¢/kWh |
| Battery TOU Supply Plan | 05/02/2026 | 05/31/2026 | 8.2¢/kWh | 7.9¢/kWh |
On-peak and off-peak periods are defined in your electric service agreement. The ComEd price to compare is published by the Illinois Commerce Commission at plugin.illinois.gov, where you may also compare electric suppliers.
Base Retail, LLC is an Alternative Retail Electric Supplier (ARES) licensed in Illinois. You are not required to purchase electricity from Base Retail, however, enrollment in a Base Retail supply plan is required to maintain battery service at your home.
Last updated: 06/01/2026
Here’s an overview of the process:
After we receive your authorization, we will submit your switch request to ComEd. We will send you confirmation when ComEd approves your switch. ComEd will also send you confirmation of the pending switch. Your confirmed service start date will be dependent on your battery installation date and your meter read cycle. We will notify you as soon as we have a confirmed start date. It will typically be on the next billing cycle after battery installation.
Until your Base service starts, ComEd remains your electricity supplier. Once your Base service starts, your monthly energy bill will still come from ComEd — it’ll just have your new Base supply rate as a line item.
Activating Base in Illinois involves six (6) agreements* that work together:
- • Energy Service Agreement (ESA) — your supply agreement with Base Retail, LLC
- • Uniform Disclosure Statement (UDS) — a one-page summary of your rate, your right to cancel, and how to reach us
- • Battery Services Agreement (BSA) — your battery service terms
- • Net Metering Addendum — how credits work on your bill
- • Automatic Contract Renewal Notice — what happens at the end of your 24-month term
- • Letter of Authorization, Supplier Switch — your permission for us to switch your service
- • Letter of Authorization, Interval Data — your permission for us to access your usage data from ComEd
*These summaries are (1) provided for convenience purposes only and (2) do not describe the full contents of the agreement and (3) that the user agrees they have read and agree to the terms of the agreements themselves.
Ready to get started? Let's chat.
We'll be in touch with you about how Base can help give you peace of mind during power outages and save you money.