Current Tariffs and Change Process

Electricity Tariffs

CPUC’s electricity tariff is a totally variable tariff by customer type. There are no fixed charges, minimum charge, demand or capacity charges. The tariff is specified based on a cost of diesel to CPUC of $3.80 per gallon. The tariff is adjusted (approximately monthly) to reflect the actual cost of diesel.  Table 1 sets out CPUC’s base electricity tariff (assuming a cost of diesel of $3.80 per gallon) and the current tariff.

Table 1 – Electricity Supply Tariff Base

  Base Tariff Current Tariff (2020/03/17)
Residential $0.5026/kWh $0.4309/kWh
Commercial $0.5326/kWh $0.4609/kWh
Government $0.5526/kWh $0.4809/kWh

 

Almost all CPUC’s 2100 customers use a prepay system with a simple accumulation meter.  The system can charge fixed charges and rate block tariffs, but doesn’t have any smart or multi-register functionality (so, for example, day/night, peak/shoulder/off-peak or demand tariffs could not be implemented). There are also 61 larger commercial and government customers with post-pay accounts.

Water Supply Tariffs

Table 2 – Residential Water Supply Tariff Usage

Usage Tariff
First 2,000 gallons p/m $1.50 per 1,000 gallons
Next 2,000 gallons p/m $2.00 per 1,000 gallons
Next 4,000 gallons p/m $2.50 per 1,000 gallons
Over 8,000 gallons p/m $3.00 per 1,000 gallons
Minimum Charge $7 per month


Table 3 – Commercial & Government Water Supply Tariff

Usage Tariff
First 3,000 gallons p/m $3.50 per 1,000 gallons
First 3,000 gallons p/m $4.00 per 1,000 gallons
First 3,000 gallons p/m $4.50 per 1,000 gallons
Over 8,000 gallons p/m $5.00 per 1,000 gallons
Minimum Charge $7 per month

Sewerage Tariffs

For sewerage system customers that are also connected to CPUC’s water supply system, CPUC’s sewerage tariff is charged as a portion of the water bill. Residential customers are charged 15% of their water bill for sewerage.  Commercial and government customers are charged 50% of their water bill for sewerage. CPUC proposes to increase sewerage tariffs over the next three years asset out in Table 4.

Table 4 – Proposed Sewerage Tariff Price Path (Portion of Water Bill)

  2020 2021 2022 2023
Residential Customers 15% 25% 35% 50%
Commercial Customers 50% 60% 70% 80%
Government Customers 50% 60% 70% 80%

 

For sewerage system customers that are not connected to CPUC’s water supply system, CPUC charges a fixed monthly charge.  The residential charge is $10 per month.  The commercial and government charge is $80 per month.