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CNG Energy
Ceased trading · 2021

CNG Energy archive

CNG Energy ceased trading in 2021. Business customers were transferred to Pozitive Energy under Ofgem's Supplier of Last Resort scheme. This page is kept as a historical record.

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Founded 1994 About 41,000 business customers at the date of cessation (2021) Harrogate, North Yorkshire B2B specialist

Ceased trading · 2021

CNG Energy no longer supplies UK businesses

Unable to absorb the 2021 wholesale gas price spike that took out 30+ UK suppliers during the wholesale gas crisis. Business customers were transferred to Pozitive Energy under Ofgem's Supplier of Last Resort (SoLR) scheme. This page is kept as a historical record.

Founded

1994

Years supplying UK businesses

Customers

About 41,000 business customers at the date of cessation (2021)

Business sites served

Fuels

Gas only (electricity supply had been announced but never launched before closure)

Energy types offered

Business sizes

SMEs only (gas-only specialist; multi-site customers received separate invoices per site)

Customer segments served

About

Who is CNG Energy?

Yorkshire-based CNG Energy (Contract Natural Gas Limited) was a 27-year SME-gas specialist that ceased trading on 3 November 2021 during the wholesale gas crisis. Its ~41,000 business customers were transferred to Pozitive Energy under Ofgem's Supplier of Last Resort (SoLR) scheme — supply was never interrupted. This page is an archival profile only.

Registered as Contract Natural Gas Limited, CNG Energy uses this legal name for Ofgem licence filings, B2B contracts and any formal communications. The trading name customers see on invoices is the shorter, recognisable form.

The company is headquartered in Harrogate, North Yorkshire, where it runs its commercial operations, account management and regulatory liaison with Ofgem.

CNG Energy was founded in 1994. The supplier operated under a non-domestic supply licence until its closure.

CNG Energy is part of the CNG Group group, which provides shared governance, financial backing and a wider pool of expertise in wholesale trading, hedging and regulatory work.

The company is regulated by Ofgem, and complaints fall under the Energy Ombudsman alternative dispute resolution scheme,but only for microbusinesses with under 10 staff and under £2m turnover. Larger I&C customers must take complaints through commercial dispute resolution.

Review

CNG Energy,pros and cons

A 27-year SME-gas specialist that won customer-service awards in earlier years but could not survive the 2021 wholesale gas crisis. Trustpilot 2.7 / 5 and Google reviews 3.5 / 5 at the date of closure. The only worthwhile action for former CNG customers now is to confirm they have since moved off the SoLR-inherited deemed contract with Pozitive Energy. Final Selectra score 2.0 / 5.

Strengths

  • Multiple customer-service awards over its 27-year lifetime.
  • Single-fuel specialist focus (gas only) with deliberately simple product range.
  • Customised payment terms and separate per-site invoicing for multi-site customers.

Watch-outs

  • Ceased trading on 3 November 2021 — supplier no longer exists as an active brand.
  • Trustpilot polarisation in final years: 32% "Excellent" / 12% "Great" against 49% "Bad" / 5% "Poor".
  • Recurring complaints about fluctuating bills and unexpected variable-rolling-contract rollovers.
  • Could not absorb the 2021 wholesale gas price spike that took out 30+ UK suppliers.

Timeline

CNG Energy: key dates

A short timeline of CNG Energy: founding, milestones, regulatory events and the closure that brought it to an end.

  1. 1994

    Contract Natural Gas Limited founded shortly after UK gas market deregulation, supplying gas exclusively to business customers.

  2. 2021

    3 November: CNG Energy announces it will cease trading following the wholesale gas price spike. Ofgem revokes its licence.

  3. 2021

    November: Ofgem appoints Pozitive Energy as Supplier of Last Resort (SoLR). ~41,000 CNG customers transferred onto a deemed tariff with supply unbroken.

  4. 2022

    Late 2021 to early 2022: Pozitive Energy onboards CNG accounts, transfers customer data, credit balances and final reads. Free switching window opens for former CNG customers to leave the deemed contract without exit fees.

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Common questions

CNG Energy,frequently asked questions

Unable to absorb the 2021 wholesale gas price spike that took out 30+ UK suppliers during the wholesale gas crisis.

Business customers were transferred to Pozitive Energy under Ofgem's Supplier of Last Resort (SoLR) scheme,supply was never interrupted.

Your supply is uninterrupted under the SoLR scheme. Contact the successor supplier to confirm your business account details and download your final CNG Energy statements while the legacy portal is still online. You are not tied to the deemed tariff,compare current business deals through Selectra to find a cheaper plan.

Yes, business credit balances are protected under Ofgem's SoLR scheme just like domestic balances. The successor supplier (Pozitive Energy) honours the balance. Reconcile your final CNG Energy bill against your records within the first 30 days to flag any discrepancy.

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