Electrical infrastructure projects in the UK must adhere to several regulatory codes, most notably G99 (for generation connections) and G100 (export limitation). These codes define requirements for protection schemes, frequency response, voltage support, and DNO interface coordination.
This article outlines what project developers and engineers must submit, such as protection studies, export limitation plans, and witness testing protocols. We also provide tips for communicating effectively with DNOs and navigating the ENA Engineering Recommendation checklists.
With OXCART’s experience in utility liaison, documentation preparation, and testing, we help clients complete their grid approval process efficiently—avoiding costly delays or rejections.
