Solar ATAP Export Credits: Compare Self-Use and Surplus
Decision details
Fits if: Peninsular domestic account holders who want to understand how Solar ATAP surplus exports appear on the bill.
Main drawback: Export credits are subject to MAQ, apply only to the Energy Charge in the same billing period, cannot offset AFA, and unused balances expire; site output and costs need written support.
Compare: time-based kWh use, panel kWp, inverter kWac, MAQ, credited exports, tariff assumptions, incremental cost and fees over the comparison period.
In this guide
Separate self-use from export credits
For domestic Solar ATAP accounts in Peninsular Malaysia, the credit rule is not a “one unit out, one unit back” assumption. Eligible exports up to the Maximum Allowable Quantity (MAQ) receive a credit at the applicable domestic Energy Charge. The credit offsets imported energy in the same billing period. It cannot offset AFA; fixed charges and other non-energy tariff components remain, and unused credit does not carry into the next period [source].
The RP4 Energy Charge components recorded on 29 September 2026 are RM0.2703/kWh for the monthly usage category up to 1,500 kWh/month and RM0.3703/kWh above 1,500 kWh/month [source]. These are derived export-credit rates for those energy components, not universal values for self-used solar. Confirm the applicable rate and category against your current account and bill before calculating.
| Comparison question | Self-use | Solar ATAP export |
|---|---|---|
| What happens to the energy? | Solar is used at the premises as it is generated; avoided grid imports depend on meter readings and the account tariff. | Eligible exports up to MAQ offset imports at the applicable Energy Charge. |
| Which bill components change? | Calculate import changes from the actual bill; do not automatically count fixed charges as savings. | Credit does not offset AFA, fixed charges or other non-energy components [source]. |
| How long does the credit last? | No export-credit balance is created. | Applied in the same billing period; unused balance is forfeited, with no carry-forward [source]. |
| What limit should I check? | When household loads run relative to generation. | Declared inverter kWac, billing period and MAQ; ask how exports above MAQ are treated. |
| Site with zero or low imports | Energy-charge imports available to offset during the billing period. | Show eligible exports, credit used, expired balance and non-energy charges; do not count surplus as income without written support. |
What is MAQ, and what should the proposal show?
The guideline defines MAQ as inverter capacity in kWac × 5 sun-hours × billing period. “kW” in the programme limit means kWac; panel kWp and inverter kWac are different inputs [source]. Ask the provider to show the values used and how eligible exports are calculated for each month. Do not multiply all monthly generation by the export-credit rate without subtracting self-use and checking the MAQ limit.
Use the same worksheet to compare two proposals:
| Monthly input / cost | Base proposal | Proposal with added capacity |
|---|---|---|
| Panel kWp and inverter kWac | ||
| Bill, imported kWh and billing days | ||
| Monthly generation and site assumptions | ||
| Estimated self-use | ||
| Exports, MAQ and eligible exports | ||
| Energy Charge and credit that can be used | ||
| Fixed charges, AFA and other components that remain | ||
| Incremental cost, fees and payment structure |
Ask for multiple months if usage, bills or output vary. An average does not show how much credit is used before the billing period ends. If the proposal omits quantities or rates, request the calculation before comparing and leave that value blank in your worksheet.
For a site with little or no grid import
The cited domestic rule is a bill credit for eligible Energy Charges, not a cash-income estimate for every exported kWh. It is limited to eligible exports up to MAQ, offsets imports in the same billing period, and any unused balance expires. AFA, fixed charges and other non-energy components remain separate [source]. If the site has zero or low imports, ask the provider to show a monthly scenario for billed imports, eligible exports, credits actually used, unused credit that expires, and charges that remain. Do not model all exports as income without a written rule that supports it.
A battery is a separate comparison, not an automatic answer to surplus export. Ask for a scenario using actual load timing, usable battery energy, cost and warranty scope. The cited ATAP rule does not determine whether a battery is suitable or economic for your site.
Assess added capacity without a payback promise
Do not decide from roof area or annual generation alone. Compare proposals with and without added capacity on the same scope: incremental cost and fees, monthly generation, loads while solar is available, self-use, eligible exports up to MAQ, and credits that may expire unused. For exports above MAQ, ask the provider to state the applicable treatment in writing; this guide does not assume those units receive the same credit.
A useful comparison starts with actual bills and kWh scenarios, not the bill’s RM total alone. Ask the provider to show the import rate used for self-use, the Energy Charge used for export credits, AFA, fixed charges, and the cost and payment assumptions for added capacity. This comparison does not guarantee savings or a payback period.
Batteries and programme term
A battery changes when energy is used or exported; it does not remove the need to compare added cost and usage patterns. Ask the proposal to state usable energy, charging/discharging assumptions, cost, warranty and the resulting bill scenario. Do not compare export credits with battery cost without matching assumptions.
Solar ATAP took effect on 1 January 2026 and has a maximum operating period of 10 years from its start date. After that, the system is for self-consumption only, without export offset or rollover [source]. Your account contract gives the relevant dates.
For site and price inputs, see the home solar quote guide and solar bill calculator. For storage, see the home solar battery guide.
Frequently asked questions
What is the domestic Solar ATAP export-credit rate?
The RP4 tariff record checked on 29 September 2026 shows an Energy Charge component of RM0.2703/kWh for the monthly usage category up to 1,500 kWh per month and RM0.3703/kWh above 1,500 kWh [source]. Credit follows the applicable Energy Charge; check your current bill and monthly usage category. These are export-credit rates, not a universal value for self-used solar, and ATAP counts eligible exports only up to MAQ [source].
Can export credits clear the whole bill or roll into next month?
No. Domestic credits offset the Energy Charge for imports in the same billing period, not AFA or fixed/non-energy charges. Unused credit does not carry forward and is forfeited [source].
Does every self-used solar kWh save one fixed rate?
Do not assume that. Calculate reduced imports using the account's actual tariff and billing period. Fixed charges remain, and bill changes such as AFA or tariff categories can affect incremental value; ask the provider to show the kWh and bill components used.
How can I tell whether extra capacity is worthwhile?
Compare a base proposal with an added-capacity proposal using the same site, bills and period. Request monthly generation, self-use, exports up to MAQ, usable credit, incremental cost, fees and payment assumptions. If treatment of exports above MAQ is not explained, mark that amount unverified; do not assume it earns the same credit.
How long does the Solar ATAP credit arrangement last?
The programme took effect on 1 January 2026. Its maximum operating period is 10 years from the start date; after that, the system is for self-consumption only, with no export offset or rollover [source]. Check the start date in your account documents.
If a site imports almost no grid energy, is surplus a cash receipt, and is a battery needed?
The cited domestic rule describes an Energy Charge bill credit for eligible exports up to MAQ, not a cash-payment mechanism. Credits offset imports in the same billing period; unused balances expire, and AFA, fixed and other non-energy charges are not offset [source]. Ask for a written monthly scenario showing billed imports, eligible exports, credits actually used, expired balance and charges that remain. The cited rule does not determine whether a battery suits your site; compare it separately using actual load timing, usable capacity, cost and warranty scope.