1. Basic Charge or Generation Charge – This is the cost of supplied power purchased by First Bay Power Corp. (FBPC) from power plant producers (Aboitiz Power Renewables Inc.)

2. Power  Cost Adjustment (PCA) Composition

• Transmission Charge – This refers to the cost paid to National Grid Corporation of the Philippines (NGCP), the transmission service provider for delivering electricity from power plant at MACBAN to First Bay Power Metering point/substation.
• Supply and Distribution Charge – This refers to the cost paid to First Bay by the end user / consumers for delivering electricity from First Bay Power Corporation’s Substation at Manghinao I to end-users/consumers metering point.
• Metering Charge – This refers to the cost of reading, operating and maintaining power metering facilities including cost of rendering service to customers such as billing, collection, customer assistance and other associated services.
• System Loss – This refers to the cost of electricity loss due to technical and non-technical system losses (transmission line loss, transformer core loss and pilferages with parameters allowed by ERC).

3. Missionary Charge: Small Power Utility Group (SPUG) – is a universal charge to fund the electrification of remote and unviable areas, as well as areas not connected to the transmission system, as mandated under Section 70 of the EPIRA. This cost is paid to government to subside small power utility group like Tingloy Island, Polilio Island and Marinduque.

4. Missionary Charge: Renewable Energy Development (RED) – Cost paid to Government to support the development of renewable energy.

5. Environmental Charge – This is a universal charge that accrues to an environmental fund to be used solely for watershed rehabilitation and management.

6. NPC Stranded Debt – it refers to any unpaid financial obligations of NPC which have not been liquidated by the proceeds from the sales and privatization of NPC assets.

7. Renewable FIT – ALL (Feed-In Tariff Allowance) – FIT-ALL is a uniform charge in PhP/kWh payable by all electricity users that is calculated and set annually. It aims to spur the development of emerging renewable power sources such as wind, solar, run-of-river hydro, and biomass facilities.

8. GRAM and ICERA

• GRAM – stands for Generation Rate Adjustment Mechanism.  It allows the periodic adjustment to the generation rate to reflect changes in fuel and IPP cost after a review by the ERC before costs  are passed on to customers.
• ICERA – stands for Incremental Currency Exchange Rate Adjustment. It is an ERC-approved adjustment mechanism that allows the NPC to more accurately reflect costs affected by foreign exchange rate fluctuations.

9. Subsidy for Senior Citizens – Subsidy to be paid by customers that are not availing of the Senior Citizen Discount or the Lifeline Discount.

10. Senior Citizen Discount (R.A. 9994) – This provides a maximum of 5% discount on the electricity bills of residential accounts registered under the name of a senior citizen which consume not more than 100 kWh a month.

11. Special Senior Citizen Discount (R.A. 9994) – This grants a 50% discount on the electricity bills of senior citizen institutions accredited by the Department of Social Welfare and Development (DSWD).