A modular solar panel including multiple solar panel modules. Each solar panel module includes multiple solar cell assemblies. Each solar cell assembly includes a protective glass, a base plate, a solar cell array located therebetween, and an electrical connection ribbons extending from the ends of the solar cell array. The solar panel module further includes multiple coupling modules. Each coupling module includes an interior cavity to receive one end of the solar cell assembly, a pin joint located on exterior of a first coupling module to interlock with a pin joint located on exterior of a second coupling module, and an electrical connection plug to receive one of the first and the second electrical connection ribbons. The electrical connection plug of the first coupling module electrically connects with an electrical connection plug of the second coupling module.