I wanted to get thoughts on how best to model the impacts of residential solar panel sales and installation in California. For example, if I assume $10 million in sales of new residential solar systems, this is essentially a consumer purchase from a solar system "retailer" who also does the system installation. I am having trouble with the sector and activity type. Would this $10 million be a commodity change to sector 3319 wholesale trade distribution services (industry sales), or an industry change to sector 319 wholesales trade (industry sales) , or something else? So...do I run commodity or industry? Do I need to run a margin or RPC?
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