The EU and China intend to exchange potential innovative solutions and legislative improvements to "meet the global power demand with clean and green alternatives", the text reads, although no financial commitment is envisaged.
The joint statement is set to be made public on 17 July.
The two sides believe improving security of energy supply will involve maximising energy efficiency, increasing the share of renewable energies, and "supporting fuel-switching to low-carbon energy sources traded on open and transparent global markets".
China and the EU face similar challenges in securing a cleaner energy supply since they are both highly dependent on fossil energy imports.
They represent around 22% and 12.5% respectively of global energy consumption, according to findings published by the European Commission.
Two reports will be produced to address how to increase the share of renewable energy sources and the potential of smart grids.
One report will deal with policies to support "sustainable and affordable" generation capacity construction in both regions. The other sets out policies to support the "integration of variable renewable in the energy system".
The EU recently concluded the most contested files of its clean energy package and is currently drafting a 2050 decarbonisation strategy, expected by the end of the year.
China has committed to decreasing its carbon footprint by setting, among others, 2030 carbon reduction and renewable targets.
The signatories of the joint statement, EU energy commissioner Miguel Arias Cañete and the director the National Energy Administration of China Nur Bekri, met on 2 June in Brussels for an EU-China energy dialogue.
They signed a 2017-2018 work plan to implement a joint roadmap on energy cooperation.