I calculated it in two ways.
Solar panel accumulator ratio.
Solar panels and accumulators optimal ratio.
Solar panel max output.
The optimal ratio is 0 84 21 25 accumulators per solar panel and 23 8 solar panels per megawatt required by your factory this ratio accounts for solar panels needed to charge the accumulators this means that you need 1 428 mw of production of solar panels and 100mj of storage to provide 1 mw of power over one day night cycle.
Then when both of those are met build some more.
I had found that a ratio of 1 2 to 1 5 accumulators per solar panel worked out perfectly fine.
Now connectible to the circuit network.
If your power draw is constant then the optimal ratio is 25 solar panels to 21 accumulators.
In general this is a technique which works well when you ve just researched accumulators and solar panels but don t have enough resources to build big solar farms and accumulator farms yet.
Provide power p recharge accumulators.
Now you have enough for a while.
During daylight hours every panel provides the maximum power level 60kw.
Alternatively this works out to a ratio of 25 solar panels to 21 accumulators.
500 21 p mw solar panels 20 p mw accumulators these are the numbers i use.
The amount of solar panels and accumulators you need is more.
Reduced collision box of big electric pole to allow squeezing between it and an accumulator.
Night solar panels are producing 50 nominal power 40 of the day.
If there is variance than you need to know what the greatest possible drain over the timespan from beginning of dusk to end of dawn is i e.
This means one solar panel produces an average of 42 kw over one day and night cycle.
Your solar panels have 2 functions.
If your batteries can t fully charge during the day build more solar.
K2 changed the power output of panels and capacity of accumulators.
Generated power will increase decrease linearly during dusk and dawn and no power is produced at night.
The ratio doesn t matter nearly as much as people seem to think it does.
While the sun is out your solar panels have to output q power where q p.
100kw from 60 accumulator capacity.
Dusk dawn so on average they produce 70 of nominal power.
Entire timespan that solar panels are not producing 100 energy will be.
The ratios posted result in more solar panels then are needed to power factory and charge accumulators i had posted this in a topic on the steam forum a week ago when somebody was asking about solar panels and another person brought up the 0 8 1 ratio.
Take the current ratio of 0 84 and multiply it by 100 60 5 10 which gets me 0 7.
10 mj from 5 as far as i know the length of the day hasn t changed.
If they don t last the night build more batteries.