AEPONYX, a leading North American telecommunications equipment manufacturer, has developed a low-cost optical micro-electrical-mechanical-system (MEMS) switch that costs one-tenth of legacy optical switches and operates one hundred times faster. The optical switch consumes less than one-tenth of the power the incumbent electrical switch currently used in data centres and telecommunications applications. AEPONYX and its manufacturing partners are proposing to design, test and fabricate optical circuit switching (OCS) modules that can be packaged with optical amplifiers and custom-control circuitry. The modules will be tested by consortium members Mellanox, Ericsson, Fiber Mountain, and USIS with the goal of demonstrating the required optical performance for data centre and cellular-base-station applications at a lower power consumption cost than that of current electrical switching technology. The use of these OCS modules is expected to lead to reduced electricity use in data centres and cell networks, with a corresponding reduction of greenhouse gas emissions.