While traditional storage has hit delays, the falling cost of lithium ion batteries and National Grid’s call for enhanced frequency response has created a boom in battery projects.

The energy business, like most others, operates best – and most cost-effectively – in a stable environment with policy visibility. And in recent years most will say that the biggest uncertainty has been political risk.

A year on from the launch of National Grid’s Power Responsive campaign, the system operator caught up with aggregators, energy companies and customers at a follow-up meeting in London.

Following 23 June’s referendum on exiting the ­European Union, companies in the energy space expect a period of uncertainty. One of those uncertainties is how long it will be before companies can be confident in making plans.