Calculator · Peak and capacity
Does your site fit its grid limit?
Enter your connection limit and your highest peak. The calculator shows how far over or under the limit you are, and a first estimate of the battery needed to stay within it.
Result
First estimate from single values, with a 20% margin on battery energy. A real design uses a full year of interval data, because the worst event decides the size. It is not a quote or a connection offer.
Send these numbers for a free reviewHow it is calculated
A first sizing you can check by hand.
- Future peak = highest measured peak + planned extra load.
- Excess over the limit = future peak − connection limit.
- Covered by shifting loads = excess × the part that loads can shift.
- Battery power = the excess that remains.
- Battery energy = battery power × longest time above the limit × 1.2. The 20% is a margin for ageing and for events worse than last year’s.
- If the site is under its limit: possible saving = unused capacity × capacity charge, if your tariff lets you lower the contracted capacity.
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