This article discusses the 'smile curve hypothesis' and provides a method for quantifying and demonstrating that the potential for added value generation varies significantly across the Solar PV value chain. A smile curve is a straightforward and visually appealing tool that can aid in our understanding of industry's role in the solar photovoltaic installation process, both upstream and downstream. Solar PV technology, as a rapidly growing market, has the potential to add value to the supply chain if it is fully utilized. Using the OECD's Indonesia 2021 Input-Output Table, it is demonstrated that the addition of 4.68 GWp of solar PV adds very little value to our upstream sector. This demonstrates the industry's reliance on imported inputs. Additionally, we examine the requirements that must be met to increase added value in the Solar PV supply chain.