The two companies will work either as separate project partners or as a consortium to provide coordinated system solutions and services in all areas of electrical engineering to their customers from a single source.

Under the terms of the accord, SMA will supply solar inverters while Siemens will provide transformers and switchgear for the high-voltage and medium-voltage range, including grid connection.

The services to be provided by the companies range from planning and commissioning to maintenance of complex large-scale projects in the megawatt range.

Siemens division energy management CEO Ralf Christian said: "By partnering with SMA, Siemens will be able to benefit more than before from the photovoltaic growth market.

"By taking mutual advantage of our global sales and service networks, both companies will increase their market coverage in real terms.

"Coordinated project management and joint technological developments will ensure that our customers worldwide will be able to rapidly realize large-scale PV projects with maximum overall efficiency and a high return on investment."

SMA CEO and CFO Pierre-Pascal Urbon said: "As specialists in our respective areas, we will be able to offer our customers a range of individually customized complete solutions that is unique in the industry, comprising overall system design and system technology as well as grid connection and services."

SMA will display the system for the first time at the Intersolar Europe, being held in Munich, Germany.