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DNO Renewables
Battery Storage (BESS)

Grid connections for battery storage projects.

Commercial and utility-scale BESS, standalone or hybrid with solar. Feasibility, G99, G100 export limitation, connection strategy and offer review. Delivered by engineers who work with DNO storage teams every week.

Why BESS developers work with us

Battery storage sits at the messy intersection of generation, demand and G100. We handle every part of that.

Standalone and hybrid

Standalone battery projects, solar-plus-storage hybrids, retrofits to existing renewable sites. G99 across every configuration.

Import and export sorted

We handle the full G99 application including import capacity, export capacity, G100 export limitation and connection strategy.

Utility-scale credentials

From 30 kWh commercial batteries through to multi-MWh utility BESS. Direct experience of transmission-level connection strategy where needed.

The BESS-specific DNO challenges we solve

Storage projects fail in different ways to pure generation. Here's how we get them through.

Common challenge

Client wants revenue stacking but doesn't know what the grid will allow

How we handle it

We run pre-DNO feasibility on your target site with an indicative view on import capacity, export capacity and any curtailment risk.

Common challenge

DNO treats BESS import as a full new-connection request

How we handle it

We know which DNOs treat storage as generation-only, and which want the full new-connection review. We prepare the right submission first time.

Common challenge

Grid-forming vs grid-following inverter specification

How we handle it

We can advise on which DNO regions are pushing for specific inverter capabilities and how that changes the application requirements.

Common challenge

Long connection offer timescales blocking investment

How we handle it

Independent offer review, phased connection strategy, and negotiation on programme where the DNO's default timescale doesn't work.

What we deliver for BESS projects

Every stage of the storage DNO workstream, from feasibility to commissioning.

Standalone BESS G99
From 30 kWh commercial through to utility-scale.
Hybrid solar-plus-storage
Full G99 for combined systems, including G100.
Retrofits to existing sites
G99 variation applications to add battery to consented solar.
Feasibility studies
Desk-based feasibility including capacity, revenue and curtailment view.
Connection offer review
Independent view before you sign a multi-million-pound offer.
Commissioning
G99 and G100 commissioning submissions, all UK DNOs.

Move a battery project forward.

Send us the site, capacity and revenue model. We'll come back with a connection route and cost within two working days.