The projects in East Anglia are scheduled to be completed by February 2015.
Push Energy collaborates with landowners, local stakeholders, planners and power networks for delivering renewable and green energy into the grid.
Yingli unveiled in June 214 that demand from utility-scale projects in the UK may rise in the coming years.
About 18% of Yingli’s shipments came from Europe in the first quarter of 2014, compared with 10% in the fourth quarter of 2013 due to a better demand in the UK.
Push Energy finance director Jason Wallis said: "Solar PV farms have an important role to play in the U.K.’s long-term energy security. Working with strong partners such as Yingli Green Energy is critical to our vision for the future.
"The company has provided invaluable support and hands-on practical advice which has allowed us to complete all projects to a very tight time schedule."
Yingli Green Energy chairman and chief executive officer Liansheng Miao said: "We are committed to working with well-established companies with a solid project pipeline such as Push Energy.
"It also supports our long-term commitment to the U.K. market where we see sustainable growth potential in the coming years."
Image: Yingli will deliver 66MW of PV panels for four UK projects. Photo: Courtesy of Pixomar/FreeDigitalPhotos.net.