HomeWattCost

Delmarva Power MD R vs R-PIV

For a typical Maryland home using 955 kWh a month, R is cheaper by about $69 a year ($234 against $239 a month). R is cheaper at every level of use from 200 to 2,500 kWh a month, with the same daily pattern of use.

Utility Delmarva PowerTariffs checked 2026-11-03Typical use 955 kWh/mo, Maryland

Head to head

ScenarioRR-PIVCheaper
Typical home, per month$234$239R
All-in price per kWh24.5¢25.1¢R
Home + EV, charged at the cheapest hour$298$294R-PIV
Home + EV, plugged in at 6 pm$298$325R
Fixed charge$9.75$9.75

Typical home: Maryland average use by month (EIA), shaped hour by hour (NREL ResStock), before taxes. EV: Tesla Model Y Long Range AWD, 1,000 miles a month; cheapest start any hour on R, 12 am on R-PIV.

R-PIV is an EV or electrification rate: check the eligibility rules on Delmarva Power’s tariff before switching.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
R$322$287$216$178$182$221$281$260$199$166$196$295
R-PIV$325$294$220$183$197$225$286$265$202$174$202$300

R: price by hour

July weekday.

Same price all day
22.9¢12a3a6a9a12p3p6p9p12a

R-PIV: price by hour

July weekday.

Off-peakPeak
19.8¢31.2¢19.8¢12a3a6a9a12p3p6p9p12a

R or R-PIV: common questions

Is R or R-PIV cheaper?

For a typical Maryland home using 955 kWh a month, R is cheaper by about $69 a year ($234 against $239 a month). R is cheaper at every level of use from 200 to 2,500 kWh a month, with the same daily pattern of use. Adding an EV driven 1,000 miles a month and charged at each plan’s cheapest hour, R-PIV gives the lower total ($294 against $298 a month).

What is the difference between R and R-PIV?

R is flat: the same price at every hour, with a fixed charge of $9.75 a month. R-PIV is time-of-use (summer weekdays: Peak noon–8 pm; lowest price 8 pm–noon next day), with a fixed charge of $9.75 a month.

More Delmarva Power comparisons

How the two plans work

R: Residential Service

  • One price per kWh at every hour: 22.9¢ in July and 23.7¢ in January.
  • Shifting use to other hours changes nothing on this plan; using less is the only lever.
  • Fixed charge: $9.75 a month.

R-PIV: Residential With Plug-In Vehicle Charging Service

  • Peak noon–8 pm on July weekdays; 8 of 24 hours carry the top price of 31.2¢.
  • The cheapest July weekday hour costs 19.8¢, so moving 1 kWh out of the top hours saves 11.4¢.
  • January weekdays range from 20.0¢ to 37.8¢.
  • Summer pricing applies Jun–Sep; winter pricing Oct–May.
  • Weekends differ: off-peak all day.
  • Fixed charge: $9.75 a month.

Your own pattern of use decides the winner: compare every Delmarva Power plan on your usage, or see all Delmarva Power plans, sources and peak hours.