Question 1

What electrical upgrades are typically needed for EV charging?

Accepted Answer

Common upgrades include: electrical panel capacity increases (from 200A to 400A or 800A), transformer upgrades or additions (from 300 kVA to 750–1000 kVA), new utility service connections for high-power DCFC, trenching and conduit installation from electrical rooms to charger locations, sub-panel installations near charging areas, and demand management systems. The specific upgrades depend on your property's existing infrastructure and the number and type of chargers planned.

Question 2

How much do electrical upgrades cost for EV charging?

Accepted Answer

Costs vary significantly by scope. Panel upgrades run $10,000–$30,000. Transformer upgrades cost $25,000–$100,000. Trenching and conduit averages $50–$100 per linear foot. New utility service connections range from $50,000–$250,000 depending on utility requirements. A typical Level 2 installation for 20 ports costs $40,000–$80,000 in electrical work. DCFC installations for 4 ports typically require $150,000–$350,000 in electrical infrastructure.

Question 3

How long do electrical upgrades take?

Accepted Answer

Timeline depends on scope and utility coordination. Panel upgrades take 2–4 weeks. Transformer installations take 4–8 weeks after equipment procurement (which can add 8–16 weeks). New utility service connections take 6–18 months depending on the utility. Trenching and conduit work takes 1–3 weeks. Wins Parking coordinates all permitting, utility engagement, and contractor scheduling to minimize timeline.

Question 4

Can I phase electrical upgrades over time?

Accepted Answer

Yes, and phasing is often the smartest approach. Install conduit for future capacity during initial trenching (the marginal cost is minimal). Size transformers for your 5-year plan, not just immediate needs. Start with Level 2 chargers that require less power, and add DCFC as demand grows. Wins Parking designs phased plans that avoid costly re-work while matching investment to actual demand.

Question 5

What about demand charges — how do they affect operating costs?

Accepted Answer

Demand charges are based on your peak power draw in any 15-minute interval during the billing period. They can represent 30–50% of a commercial electricity bill. Without load management, plugging in 20 chargers simultaneously creates a massive demand spike. Our software staggers charging sessions and manages load to keep demand charges within budget — typically saving 20–35% on electricity costs.

Parking Lot Electrical Upgrades for EV Charging