Calculating Avoided Costs with the Latest Tariff Changes

PVComplete has a excellent partner in getting the lastest in rate tariff information into the Cost Savings Calculator for accurate proposals.  Here’s the latest changes

May brings another round of tariff rate updates that affect the Avoided Cost of Power (ACP) for solar customers.  The largest changes were in New England where Eversource Connecticut’s ACP increased 1.3¢/kWh and National Grid – Massachusetts increased by 0.6¢/kWh.  On the flip side, two Maryland utilities (Baltimore Gas & Electric, Delmarva) saw their ACP decrease by 0.5¢/kWh.

Here’s the entire list of rate changes in active solar markets for May:
Baltimore Gas & Electric (MD): -0.5¢/kWh

• Tariff: R Residential
• Average kWh Rate: Was 13.4¢/kWh, Now 13.0¢/kWh, -0.4¢/kWh
• Avoided Cost of Power: Was 13.4¢/kWh, Now 12.9¢/kWh, -0.5¢/kWh
• Updated Rates: Generation Charge, Monthly Rate Adjustment, Energy Cost Adjustment

Delmarva (MD): -0.5¢/kWh

• Tariff: R – Residential
• Average kWh Rate: Was 14.7¢/kWh, Now 14.2¢/kWh, -0.5¢/kWh
• Avoided Cost of Power: Was 14.7¢/kWh, Now 14.2¢/kWh, -0.5¢/kWh
• Updated Rates: RGGI Rate Credit, Bill Stabilization Adjustment, Procurement Cost Adjustment

Eversource Connecticut (CT): +1.3¢/kWh

• Tariff: 1 – Residential
• Average kWh Rate: Was 17.3¢/kWh, Now 18.6¢/kWh, +1.3¢/kWh
• Avoided Cost of Power: Was 17.3¢/kWh, Now 18.6¢/kWh, +1.3¢/kWh
• Updated Rates: Customer Charge, Energy Charge

El Paso Electric (NM): -0.2¢/kWh

• Tariff: 1 – Residential
• Average kWh Rate: Was 11.7¢/kWh, Now 11.5¢/kWh, -0.2¢/kWh
• Avoided Cost of Power: Was 10.9¢/kWh, Now 10.7¢/kWh, -0.2¢/kWh
• Updated Rates: Fuel & Purchased Power Cost Adjustment

Eversource NH (NH): +0.4¢/kWh

• Tariff: R- Residential
• Average kWh Rate: Was 18.7¢/kWh, Now 19.2¢/kWh, +0.5¢/kWh
• Avoided Cost of Power: Was 18.7¢/kWh, Now 19.2¢/kWh, +0.4¢/kWh
• Updated Rates: Stranded Cost Recovery Charge, Default Energy Service

Jersey Central Power & Light (NJ): -0.1¢/kWh

• Tariff: RS – Residential
• Average kWh Rate: Was 13.6¢/kWh, Now 13.5¢/kWh, -0.1¢/kWh
• Avoided Cost of Power: Was 13.7¢/kWh, Now 13.6¢/kWh, -0.1¢/kWh
• Updated Rates: St. Lawrence Hydroelectric Power Credit, BGS Reconciliation Charge

Maui Electric (HI): +0.2¢/kWh

• Tariff: R – Residential (Before), R-CSS – Residential Customer Self Supply (After)
• Average kWh Rate: Was 29.0¢/kWh, Now 29.3¢/kWh, +0.3¢/kWh
• Avoided Cost of Power: Was 14.8¢/kWh, Now 15.0¢/kWh, +0.2¢/kWh
• Updated Rates: Energy Cost Adjustment, Purchased Power Adjustment

National Grid (MA):  +0.6¢/kWh

• Tariff: R-1 – Residential
• Average kWh Rate: Was 22.5¢/kWh, Now 23.0¢/kWh, +0.5¢/kWh
• Avoided Cost of Power: Was 22.2¢/kWh, Now 22.8¢/kWh, +0.6¢/kWh
• Updated Rates: Supplier Services – Fixed Price

Oncor (TX): +0.2¢/kWh

• Tariff: R – Residential
• Average kWh Rate: Was 12.3¢/kWh, Now 12.5¢/kWh, +0.2¢/kWh
• Avoided Cost of Power: Was 11.8¢/kWh, Now 12.0¢/kWh, +0.2¢/kWh
• Updated Rates: Typical Retail Energy Rate

PSEG-LI (NY): -0.2¢/kWh

• Tariff: 180 – Residential
• Average kWh Rate: Was 22.8¢/kWh, Now 22.7¢/kWh, -0.1¢/kWh
• Avoided Cost of Power: Was 21.5¢/kWh, Now 21.3¢/kWh, -0.2¢/kWh
• Updated Rates: Fuel and Purchased Power Cost Adjustment

Xcel (CO): -0.1¢/kWh

• Tariff: R – Residential
• Average kWh Rate: Was 10.1¢/kWh, Now 10.1¢/kWh, 0.0¢/kWh
• Avoided Cost of Power: Was 10.8¢/kWh, Now 10.7¢/kWh, -0.1¢/kWh
• Updated Rates: Transmission Cost Adjustment, Clean Air-Clean Jobs Act Rider

Utilities Whose Rates Changed Less than 0.1¢/kWh

PVComplete’s rate tariff information comes from our partner Genability.  For more information on how we calculated these values, please reference our blog post: The Genability Methodology Behind  Monthly Residential Rates Newsletter.