Understanding the Connection Process
Decision Tree for the Distributed Generation Connection Guide
The Energy Networks Association, in conjunction with Distribution Network Operators, has produced a series of Connection Guides to assist with connection of generation to the network. There are three separate Distributed Generation Connection Guides and the flowchart guides you to the most relevant Connection Guide for the Distributed Generation you are planning to install.
Note: This decision tree is only relevant where one generating unit is installed in each premises; in other cases advice should be sought from the relevant Distribution Network Operators (DNOs).
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Examples of Distributed Generation with a rating ≤ 16 Amps per phase, which is approximately ≤ 11.04 kW 3-phase and ≤ 3.68 kW single-phase
PV SYSTEM

Size < 30 m2
Or < 15 large panels
Or < 20 small to medium PV panels
WIND

QR5 turbine
Rated 6 kW with a rotating section of 5m height.

Bergey wind turbine
A) Rated 1.0 kW with a diameter of 2.5m
B) Rated 7.5 to 10.0 kW with a diameter of 7m

Proven 7
Rated 3.2 kW with a diameter of 3.5 m
Proven 11
Rated 11 kW with a diameter of 5.5 m
Combined Heat and Power (CHP)
A micro-CHP plant rated 6 kW (3-phase) (the size of a big dishwasher 0.8 x 1 x 1m)could have a thermal output of 18 kW