As per the space.com, the United Kingdom wants to generate solar energy in space and believes they will be able to do so by 2035

*Paromita Das

The UK Space Energy Initiative, which was launched last year in an effort to investigate options for developing a space-based solar power plant, has brought together over 50 British technology organizations, including heavyweights such as aerospace manufacturer Airbus, Cambridge University, and satellite manufacturer SSTL.
According to the programme, using the sun to beam power from space could help the UK meet its goal of zero greenhouse gas emissions by 2050 at a lower cost than many existing technologies.

According to the initiative’s chairman, Martin Soltau, the technology needed to develop the plant already exists; the challenge is the size and scope of the project.
According to Soltau, the programme has devised a 12-year development plan in which a prototype power plant erected by robots in orbit could beam gigawatts of power from space to Earth as early as 2035.

The British engineering firm International Electric Company’s CASSIOPeiA (for Constant Aperture, Solid-State, Integrated, Orbital Phased Array) modular design will be used in this initiative.

The modular design of the orbiting power plant allows it to be extended after the demonstration phase. According to Soltau, even the demonstrator would be massive, measuring several miles across, and would require 300 launches of a rocket the size of SpaceX Starship to reach orbit.
It would be 22,000 miles (36,000 kilometers) above Earth, with an unobstructed view of the sun and Earth.

According to Soltau, the primary function would be similar to that of an earth-bound solar plant, with the only difference being that CASSIOPeiA would produce far more electricity than a similarly sized terrestrial plant.

Furthermore, the plant would not be affected by issues such as an overcast sky, which affects most terrestrial plants.