Solar generation records were broken in the UK on 13 May on the back of clear and bright weather conditions, according to the Solar Trade Association.
STA said that around midday yesterday a generation peak of 9.47GW was achieved, surpassing the previous record of 9.38GW set in May 2017.
The trade body added that a new record may be set again today.
STA director of advocacy and new markets Leonie Greene said: “It is impossible to argue with the numbers.
“The bright clear skies combined with mild temperatures means solar has consistently met big portions of electricity demand throughout recent days.
“Days like these show that the technology can deliver clean, affordable power in abundance.
“We now need government to provide a level playing field with other technologies and then solar can thrive without public support.
“Currently solar in the UK faces a plethora of barriers which have dramatically slowed deployment.”
STA said UK solar is facing a number of challenging policy and regulatory issues, including proposed changes to the way reduced-rate VAT is applied to the sector as an energy saving technology.
It added that there is also a lack of clear and fair remuneration for small-scale power exports to the grid, unfair exclusion from secure government Contracts for Difference, unfair business rates for organisations that install solar on their buildings and a glut of unhelpful charging regulation reforms proposed by Ofgem.
STA said its recent analysis shows that with stable support solar could hit less than £40 a megawatt-hour before 2030.