Capacitors and supercapacitors and Rail traction

Energy flows from capacitors and supercapacitors to rail traction; their prices have moved together.

Capacitors and supercapacitors (energy) and Rail traction (energy): 2 relationships.

How they are linked

1. Energy flow

Physical flow · Direct · Capacitors and supercapacitors → Rail traction

Trams use supercapacitors to run between charging stops.

2. Price link: onboard storage

Cost and price · Weak · Both ways

Trams and metros use supercapacitors to store braking energy and run short distances without wires. The capacitor proxy correlates at -0.14 monthly with the rail equipment index, so no price link shows; this is a technology link only.

• -0.14 monthly change correlation
• -0.27 12-month change correlation
• 0.14 fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.