The Inflation Reduction Act (IRA) represents America’s most significant investment in clean energy. This law accelerates the transition to renewables, involving huge upgrades to energy infrastructure and grids; implementing it is no simple task.

Open source is mentioned only once in the IRA, requiring open-source monitoring tools to track “weather-normalized energy use of a home before and after the implementation of a home energy efficiency retrofit”. This requirement of the $4.3 billion grant to states for home energy efficiency improvements is essential for consistent, transparent evidence that impacts were real. This will…