Guides
Understanding
Where a number comes from, and what it says when nobody explains it.
Deep dive
Understanding
How much does every kWh passing through the battery cost
Price divided by capacity tells you what it costs to buy, not what it costs to use. The sum that brings together price,…
Deep dive
Understanding
How long does a battery storage system really last, and what runs out first
Six thousand cycles on the box and two years on the warranty certificate are two promises that never meet. Which number…