Battery storage grid connections, handled.

Yes, in almost every case. Battery storage that connects to the mains supply is treated as generation and requires DNO notification or approval, most commonly through a G98 notification or a G99 application, depending on the system's inverter capacity and whether other generation is already connected. If unsure, send us the equipment details and we'll confirm the right route.

G99 is the formal application route used for the majority of commercial battery systems, and for domestic systems that fall outside G98 thresholds. As a general rule, larger single-phase and three-phase battery installations use G99. We'll confirm which route applies once we've seen the equipment schedule.

It depends on how the battery is being added and what's already been approved. Sometimes the existing approval can be amended, sometimes a new application is required. Send us the existing DNO approval, inverter details and proposed battery equipment and we'll review what needs to be submitted.

G100 is the ENA engineering recommendation covering export limitation schemes. It applies where a battery or generation system is designed not to export unrestricted power to the network. Where G100 is proposed, we support the application process and provide the DNO with the relevant information they require.

Yes. Battery systems can have separate import and export capacities and, for larger projects, this is often central to the connection strategy. Getting these figures right at application stage matters, they directly influence how the DNO assesses the project.

Yes. Standalone BESS is a core part of our work. We support developers with feasibility, connection strategy, formal applications, DNO liaison and commissioning documentation for standalone battery projects.

Our Grid Connection Feasibility service can investigate indicative import and export capacity, known network constraints and indicative costs and timescales. Definitive figures come from the DNO's formal assessment, but feasibility can establish viability before you commit to the formal application.

Yes, for routine battery projects we can prepare a single line diagram as part of the application where included within your quotation. For larger, more complex schemes an SLD prepared by your project engineering team is usually the right approach, and we work from that.

Site address, existing supply details, any existing generation, battery and inverter make and model, battery capacity, inverter AC capacity, proposed export limit, any existing DNO approval, an SLD (or the information for us to prepare one) and a signed Letter of Authority. For larger projects we'll also want requested import and export capacity, site boundary and proposed point of connection.

Yes. We support installers, EPCs and asset owners running multi-site programmes with feasibility across multiple DNO regions, centralised tracking, standardised reporting, formal applications and connection offer management.

No. The DNO may charge separate application, assessment or design fees depending on the project and connection requirements. These are payable separately and are not included within DNO Renewables' professional fees.

Yes. Once the installation is complete we manage the commissioning documentation with the DNO so the battery can operate to the terms of the connection agreement.