- Get upto a $200 Reward Card
- upto $30 off Fiber for 12 Months
- Reliable Fiber Speeds up to 5 Gbps
Electricity
Top 5 Electric Providers in Old Greenwich
Constellation Energy
Proven Leader in Clean Energy
- Renewable
- 0%
- Guarantee
- 90 days
- Rate lock
- 8-21 Months
Major Energy
Price Protection Plans
- Renewable
- 34%
- Guarantee
- None
- Rate lock
- 12 Months
Direct Energy
Best for Apartments
- Renewable
- 0%
- Guarantee
- None
- Rate lock
- —
Xoom Energy
Wide Plan Selection
- Renewable
- 0%
- Guarantee
- None
- Rate lock
- —
- Renewable
- —
- Guarantee
- —
- Rate lock
- —
Rates accurate as of October 30, 2026
EnergySage
Save up to 20%! Get custom solar quotes online, no phone calls required!
- Service
- Home solar
- Quotes
- Free
See Top Plans in Your Area
Internet
Top 9 Internet Providers in Old Greenwich
Optimum
3 Year Price Lock*
- Speeds up to
- 8 Gbps
- Type
- Cable & Fiber
- Data cap
- Unlimited
- Availability
- 92.78%
- Speeds up to
- 7 Gbps
- Type
- Fiber
- Data cap
- Unlimited
- Availability
- 85.63%
AT&T Fiber
Get a $200 Reward Card*
- Speeds up to
- 5 Gbps
- Type
- Fiber
- Data cap
- Unlimited
- Availability
- 61.21%
Starlink
Internet Anywhere You Are
- Speeds up to
- 400 Mbps
- Type
- Satellite
- Data cap
- Unlimited
- Availability
- 100%
Verizon 5G Home Internet
Wireless Internet Great for Renters
- Speeds up to
- 300 Mbps
- Type
- 5G
- Data cap
- Unlimited
- Availability
- 100%
T-Mobile 5G Home Internet
Wireless Internet
- Speeds up to
- 498 Mbps
- Type
- 5G
- Data cap
- 1.2 TB
- Availability
- 58.62%
AT&T Air
Wireless Internet
- Speeds up to
- 300 Mbps
- Type
- 5G
- Data cap
- Unlimited
- Availability
- 58.62%
- Speeds up to
- 150 Mbps
- Type
- Satellite
- Data cap
- 150-850 GB
- Availability
- 99.89%
- Speeds up to
- Varies
- Type
- Fiber, Cable, 5G, & Satellite
- Data cap
- Varies
- Availability
- 95%
From
$39.95
/mo
Call 866-452-1131
*Not all internet providers and speeds are available at every address.
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Utilities Summary for Old Greenwich, CT
| Electric Companies: | 5 |
| Municipal Electricity: | No |
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Old Greenwich Internet Connectivity
Broadband Availability
94.1777%
Percent of population with access to speeds of 100 Mbps download and 20 Mbps upload
1 Gig Availability
91.38%
Percent of population with access to download speeds of 1 Gbps
Fiber Availability
91.38%
Percent of population with access to fiber Internet
Fastest Internet Providers in Old Greenwich
| Provider | Connection Type | Download Speed |
|---|---|---|
| Optimum | Cable & Fiber | 8 Gbps |
| Frontier | Fiber | 7 Gbps |
| AT&T Fiber | Fiber | 5 Gbps |
| Starlink | Satellite | 400 Mbps |
| Verizon 5G Home Internet | 5G | 300 Mbps |
| T-Mobile 5G Home Internet | 5G | 498 Mbps |
| AT&T Air | 5G | 300 Mbps |
| Viasat | Satellite | 150 Mbps |
| Earthlink | Fiber, Cable, 5G, & Satellite | Varies |
*Not all speeds available in all areas
Utilities in Nearby Cities
Frequently Asked Questions
Can I choose my electric company in Old Greenwich?
Yes, the state of Connecticut has deregulated electric utilities. Deregulation allows for multiple electric providers within each city and lets customers choose or switch to a provider or plan best fits their needs. Assuming your area has started allowing retail electric competition, you can choose between Constellation Energy and Major Energy or any of the 5 electric providers available in Old Greenwich.
Can I choose my natural gas utility provider in Old Greenwich, CT?
Yes, the state of Connecticut has deregulated its natural gas utilties, but only for commercial customers, at this time. Residential customers must use the primary gas company in Old Greenwich, .
Does Old Greenwich offer municipal electricity services?
No, Old Greenwich does not provide municipal electric service to it's residents. However, it is likely that there are essential municipal services offered to the Old Greenwich area, like providing safe and clean water, handling sewage treatment and wastewater disposal.
Who is the fastest internet provider in Old Greenwich?
Optimum is the fastest internet service provider in Old Greenwich, offering speeds up to 8 Gbps to 92.78% of the city.
Who is the cheapest electricity supplier in Old Greenwich?
Major Energy is the cheapest electric provider in Old Greenwich, offering plans starting at $0.1399 /kWh.