Approved Provider of the Demand Flexibility Service

Delivering an end-to-end solution that enables energy suppliers and energy technology businesses to participate in National Grid ESO’s Demand Flexibility Service.

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Who we serve

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Energy Suppliers

We provide smart meter data access, baselining, forecasting, bidding and settlement services. All energy suppliers have to do is recruit the customers.

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Battery OEMs

We deliver full end-to-end engagement with National Grid ESO for DFS delivery. We can either directly control your customers' batteries to allow for optimum demand reduction during an event, or dispatch signals to allow the OEM to perform control.

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EV Charger OEMs

For EV chargepoint makers and operators, we offer the same end-to-end engagement service as we do for Battery OEMs. We simply control your customers' chargers via our FlexiGrid platform, or enable you to control them.

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Smart Meter Apps

You sign up your customer base, we deliver everything else, from smart meter access through to the settlement of your customers' consumption data.

How it works

We collect consented data from users’ smart meters who are opted-in to the scheme via our data platform, n3rgy. Using this consumption data, we then utilise our intelligent aggregation software, FlexiGrid, to calculate actual demand reduction during DFS events, allowing you to pass on rewards to your customers.


Data provided in a timely manner at aggregated and individual levels.


Ongoing calculations to determine available volumes for forecasting, bidding and settlement purposes.


SMS pricing models based on market analysis and proxy data points.


Indicative forecasts weekly and day ahead for volumes and pricing.

Our Partners

We’re Award Winning…

We were recently recognised by the Utility Week Awards 2023, being honoured with the ‘Unlocking Data Award’ for our outstanding contribution to National Grid ESO’s Demand Flexibility Service (Winter 2022/23 programme). By broadening the reach of DFS and the benefits available to both consumers and the grid, the Utility Week Awards judges recognised how SMS’s turnkey package of data and flexibility solutions helped not only increase, but diversify the spectrum of approved providers and end consumers who took part in the first ever DFS events, enabling access to hundreds of thousands of UK homes and businesses.

Interested in our DFS solution?

Deliver the benefits of DFS to your customers today by working with an Approved Provider with specialist data and aggregation expertise.

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