# Read the cumulative annual radiation based on the surface area

Dear @chris,

sorry if I bother you.

I want to ask you if there is already a component that makes the sum of the annual radiation between all sensors and gives how many kWh/m2 the surface receives, regardless of how many sensors are analyzed.
Why out from the HBAnnualCumValues I have the annual sum of the radiation for each sensor, and adding the GH native mass addition component, then gives me the total sum of all sensors, but if I have the same surface analyzed, one with 150 sensors and one with 300 sensors, obviously I have a greater value.

Thanks and best regards

if I understand the question, should be easy to solve.
You need to calculate the portion of the area of each sensor, based on the grid size you have set, and then multiply it by the annual Radiation of each respective sensor.
In fact could be a good addition.

Hope It helps

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Thanks for the help!!