Defence and security operations often require power in locations that are difficult to reach, exposed to extreme weather, or where noise and heat signatures create tactical risk. Diesel generators struggle in these conditions, demanding constant refueling and producing noise, emissions, and detectable signatures. MOBISMART delivers autonomous hybrid solar + fuel cell + battery systems that provide silent, reliable, low-signature power for surveillance, sensors, communications, and border monitoring, even in –40°C cold, heavy snow, and low-sunlight environments.