USMC seeks to develop a renewable 1kW-class hybrid energy power source that will reduce the weight and volume by 50% versus currently deployed systems. West Coast Solutions (WCS) is meeting the challenge with the hybrid/solar Ultra-Lightweight Expeditionary Power System (U-LEPS). Our approach is anchored in our industry-leading, inherently safe, high energy density (150 Wh/kg) lithium-Ion batteries. Peak power handling capacity of U-LEPS is up to 2 kW with over 6400 Wh energy storage, meeting or exceeding the capabilities of existing systems. U-LEPS is inherently more robust and user-friendly than currently-fielded technology. Simulations, risk reduction tests, and engineering reviews have been accomplished to ensure requirements will be met. U-LEPS solves SWaP issues, saves fuel, and reduces convoys, thus reducing operational costs and, most importantly, saving lives.