Ofgem has released its official installation figures for May, June and July which determine what the feed-in tariff rates will be starting from November 1.

The Department of Energy and Climate Change (DECC) has identified three capacity bands in which installed capacity is monitored: Domestic Scale (0-10kW), Small Commercial (10-50kW) and Large Commercial installations (50kW-5MW). The installation levels in each of these bandings will determine how much the various FiT banding rates will be reduced by.

Installations in the domestic-scale banding stood at 163.769MW. As this lies in between 100-200MW this will enact a 3.5 percent tariff digression on the existing ≤4kW tariff band (16p) and >4-10kW tariff band (14.5p).

From November 1, the ≤4kW FiT rate will be 15.44p while the >4-10kW FiT rate will stand at 13.99p.

Installations in the small commercial-scale banding stood at 57.09MW. Although only marginally above the 50MW threshold, this too will enact a 3.5 percent digression to the existing >10-50kW tariff rate (13.5p). As of November the 1, the >10-50kW tariff rate will be 13.03p.

Finally, installations in the large commercial-scale banding stood at just 13.94MW. As this is less than the stipulated 50MW digression point, the FiT rates for installations >50kW-5MW will remain the same until, at least, February 1. From November 1, the tariff rates will be 11.5p for >50-150kW installations, 11p for >150-250kW installations and 7.1p for >250kW-5MW installations.

A full summary of the tariff changes can be viewed in the table below:

Digression Band

Tariff band

Deployment level

Digression rate

FiT tariff from November 1

0-10kW

≤4kW

163.77MW

3.50%

15.44p

>4-10kW

3.50%

13.99p

 

 

 

 

 

>10-50kW

>10-50kW

57.09MW

3.50%

13.03p

 

 

 

 

 

>50kW-5MW

>50-100kW

13.94

0%

11.5p

>100-150kW

0%

11.5p

>150-250kW

0%

11p

>250kW-5MW

0%

7.1p

Stand-alone

0%

7.1p