New era for AIM

The new AIM Rules for Companies became effective on 5 August 2026 and have been heralded by the London Stock Exchange as the start of 'a new era' for its junior exchange.

The AIM reforms are expected to benefit energy firms by making it easier and less expensive to access public investment. The changes reduce the complexity and cost of listing on AIM, simplify fundraising requirements and provide greater flexibility for companies looking to raise capital or acquire new projects and assets.

This is particularly important for energy businesses, which often require significant funding to support project assessment, development, infrastructure construction and expansion.

In addition, the introduction of founder-friendly voting structures may also encourage innovative clean energy and technology companies to go public while retaining strategic control.

At the same time, new admission routes for international firms could attract a wider range of energy companies to the UK market.

Although companies must still meet disclosure and governance standards, the overall aim of the reforms is to create a more attractive and growth-oriented environment for ambitious energy businesses seeking investment and expansion.

The London Stock Exchange says the reforms are the start of “a new era” for its junior exchange.

These new rules benefit both the admission process itself and life post-admission and include the following:

• an easier and cheaper admission process. Achieved via:
  • the removal of the traditional Working Capital Statement and its replacement with more informative and less onerous disclosures about an issuer’s capital resources, financial commitments and liabilities, intended use of funds raised and the directors’ assessment of a Company’s funding needs over the next 12 months
  • offering greater flexibility in accounting standards used by issuers. UK-incorporated companies may now prepare accounts under UK GAAP rather than using IFRS. International issuers are able to use EU IFRS, USGAAP, Canadian GAAP, Australian GAAP and Japanese GAAP.
• lighter corporate governance requirements. The previous “comply or explain” approach has been replaced with governance more focused on disclosure, which should provide firms with greater flexibility while providing information to investors
• a new express market route, which is eligible for international companies already listed on a recognised overseas exchange
• easier fundraising: AIM’s New Capital Access Window allows AIM companies to request temporary suspension while negotiating fundraising or securities transactions
• changes to transaction rules. The threshold for a substantial transaction has increased from 10% to 25%, giving AIM issuers greater flexibility when undertaking acquisitions. 

As at 31 July 2026, only 69 (12%) of the 598 issuers on AIM represented the energy sector. This year to date, only Rift Helium Plc has joined AIM. It is no surprise that the exchange is hoping that its new rulebook will encourage more companies in the energy sector to take the plunge and list.

Against this backdrop, it should be noted that once on the market, energy issuers are popular with investors, with the sector accounting for 40% of trades by volume in July 2026. Further, the sector had two of the top 10 traded stocks in that month in ITM Power and Serica Energy.

This is no surprise as both ITM Power and Serica Energy have been busy in recent months adding to their respective portfolios and growing their businesses. This is what AIM was designed to do since its launch in 1995 and what investors are looking for when investing.

If energy companies are ambitious, have a stated growth plan on which they deliver and communicate with investors along the way, AIM should now be an attractive option to consider.

Conclusion

If energy companies are looking for investment with which to grow, AIM has put its hand up as an option. It has delivered a more pragmatic approach to admission and offers issuers a more efficient environment in which to raise capital and carry out an M&A programme.

This article was first published by Energy Voice and has been reproduced here for our readers.