FE is interpolating bad rooftop solar data

[simonhac]

might be better to fix this in the backend.

you can see that the FE is interpolating down to zero and up to valid values:

the historical data ends with a run of zeros (should probably be null or NaN):

btw, the forecast data looks fine, and the code dutifully (but not really desirably) interpolates back up to these valid values:

[simonhac]

there's an argument for interpolating the solar data (down to 5 minute intervals) on the BE… as this is required for flow accounting.