Atelierworkshop is an innovative Wellington based architectural practice that has advanced into the area of off- site manufacture of container-based housing solutions. Their product, the Port-a-Bach (PAB) is moving into its second generation (PAB Gen-2). This product development initiative has resulted in a range of projects that have been undertaken to improve off-the-grid energy systems, water supply and storage, packaging, transportation and cost reduction. This particular project documents the design and development of an energy management and supply accessory product, called the Bach Pack. The Bach Pack seeks to create a viable product energy system solution, at reduced cost and environmental impact (compared with existing solutions) and to achieve this through the development of the usability aspects and features of the product system. The focus is on developing a quality experience for the end user with regards to the attachment and deployment of the components that make up the Bach Pack product. This accessory and modular product solution enables the PAB Gen-2 to be self-sufficient with regard to electrical energy and water supply, and can be specified at point of sale or added later if required. This document focuses explicitly on the design and development of the solar array segment of the Bach Pack.