Incredible UK solar installation figures revealed

Facebook
Twitter
LinkedIn
Reddit
Email

After Solar Power Portal last week reported that photovoltaic installations in the UK had begun to tail off, the Department of Energy and Climate Change (DECC) has quietly updated its weekly data revealing shocking figures not even the most optimistic of us would have expected.

With the feed-in tariff deadline fast approaching, it would come as no surprise to hear that hundreds of UK solar installers were rushing to complete projects before Monday’s cut-off point. However, when DECC last week published a graph showing that the installation figures had begun to decline, we assumed that all those who were planning to install had already done so.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

What we didn’t realise was that DECC had seemingly made a mistake, and that the figures had in fact continued to climb at an alarming rate.

The latest data on the DECC website in fact shows that a total of 83.121MW was added to the MCS data last week (ended December 4) with 60.905MW of that total within the 0-4kW bracket, equating to more than 21,000 installs.

The corresponding graph (to the left) also highlights how the dip featured in last week’s graph was in fact fantastical, as install figures have now continued to climb to reach a total of more than 611MW of installations since the beginning of January 2011.

These figures are far more revealing in comparison to regulator Ofgem’s severely out of date numbers, which claim that only 24.874MW for the same week period and only 381.477MW for the year.

Discouragingly, Ofgem’s stale figures are being picked up by mainstream press, including the BBC, as well as market analysts and the industry itself, sending a seriously distorted message out to the public en masse.

The real-time figures revealed here show the incredible amount of solar uptake evident in the UK, with more than 83MW added last week alone, it is no surprise the MCS website crashed.

Read Next

September 10, 2026
The US added 11.4GW of solar PV capacity in Q2 2026, a 45% year-on-year increase, according to data from SEIA.
September 10, 2026
Sonnedix has secured US$1.3 billion refinancing covering 1GW solar and wind and 117MW BESS under construction in Chile.
September 10, 2026
US technology giant Oracle is seeking proposals for 2GW of solar PV, wind power, geothermal and “other renewable technologies” to power its data centre operations in New Mexico.
September 10, 2026
Rana Holdings has proposed a 2GW solar power portfolio in Madhya Pradesh with a planned investment of INR352 billion (US$4 billion).
September 10, 2026
GameChange Solar has filed a patent infringement lawsuit against Nextpower, alleging infringement of US Patent 12,449,161.
September 10, 2026
The three EU Parliament rapporteurs on the proposed Industrial Accelerator Act are calling for increased European content in solar modules and other net-zero products.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK