100Green customer service

This advice applies to Scotland. See advice for See advice for England, See advice for Wales

100Green scores for October to December 2025

Overall rating

3.6 out of 5
Fewer complaints received

4 out of 5
Contact waiting time

5 out of 5
Billing and metering

4 out of 5
Customer commitments

0 out of 5

100Green ranked 6th in the supplier comparison table.

Rank	Supplier	Overall rating	Fewer complaints received	Contact waiting time	Billing and metering	Customer commitments
1	Ecotricity	3.9 out of 5 More details	4 out of 5	4 out of 5	3 out of 5	5 out of 5
2	Outfox Energy	3.9 out of 5 More details	3 out of 5	4 out of 5	4 out of 5	5 out of 5
3	Octopus Energy	3.8 out of 5 More details	4 out of 5	4 out of 5	3 out of 5	5 out of 5
6	100Green	3.6 out of 5	4 out of 5	5 out of 5	4 out of 5	0 out of 5

Showing 5 of 4 suppliers

Check the full table to compare more energy suppliers' customer service

Scores breakdown

We give energy suppliers a score out of 5 for each category, based on various data. You can look at this data in more detail below.

Find out how the scores are worked out

Fewer complaints received

If a supplier gets a low number of complaints, we give them a higher star rating.

Complaints to Citizens Advice Consumer Service, the Extra Help Unit, Advice Direct Scotland, and the Energy Ombudsman: 17.9 per 10,000 customers

Billing and metering

We measure billing accuracy by looking at how many bills are based on a meter reading, rather than an estimate.

Bills accuracy (smart meters): 99.81%
Bills accuracy (traditional meters): 99.98%
Smart meters working correctly: 88.67%

Contact waiting time

How long can you expect to wait when contacting this supplier?

Average call centre wait time: 10 seconds
Emails responded to within 2 days: 96.9%
Average Webchat response time: 48 seconds

Customer commitments

Is the supplier a member of the Energy Switch Guarantee or the Vulnerability Commitment?

Customer commitments: N/A

Fuel mix

The fuel mix is the percentage of energy sources used by this supplier. 100Green uses:

Fossil fuel: 0%
Nuclear: 0%
Renewable: 100%
Other: 0%

Customer service contact details for 100Green

Telephone: 0192 048 6156
Freephone: 0808 175 4975
Email: hello@100green.com
Website: 100green.com
Web chat: No
Ring backs: No
Mobile hotline: No
Minicom/text: No
SignVideo: No

Opening Hours

Monday: 8am-8pm
Tuesday: 8am-8pm
Wednesday: 8am-8pm
Thursday: 8am-8pm
Friday: 8am-8pm
Saturday: 9am–1pm
Sunday: 9am–1pm

Ways to contact

Web chat: Yes
Ring backs: Yes
Mobile hotline: No
Minicom/text: No
SignVideo: Yes

Payment Information

Direct debit: Yes
Cash or cheque: Yes
Prepayment: Yes