Net Metering in the Philippines: Meralco Guide 2026

The short answer

Net metering in the Philippines lets your Meralco meter run backward in accounting terms: daytime surplus from your rooftop earns credits against the electricity you import at night. In 2026, two reported rule changes matter — the DOE's April-2026 circular reportedly requires distribution utilities to act on complete applications within 10 days under RA 9513 (systems up to 100 kW). Exported surplus earns credits at an ERC-set rate below the retail rate — which is exactly why self-consumption, not exporting, is where the savings live.

How net metering actually works

Under Republic Act 9513 (the Renewable Energy Act) and ERC's net-metering rules, a qualified customer installs a bi-directional meter that separately records energy imported from and exported to the grid. At billing time:

• Imported kWh are billed at Meralco's normal retail rate.
• Exported kWh earn credits valued at the ERC-set export rate (below the retail rate; confirm the current figure with Meralco).
• Credits offset your bill — they are not cash payouts. You cannot earn money beyond roughly zeroing your bill.

The asymmetry is the whole strategy: since the export credit sits below the retail rate, 1 kWh used directly in your home saves more than 1 kWh exported. Size the system so daytime loads (aircon, water heater, washing machine, EV charging) absorb as much generation as possible, and let only the true surplus flow to the grid.

What changed in 2026

Two developments reshaped the process, both hedged because regulators revise the details:

• 10-day approval mandate (reported): per the DOE's April-2026 circular as reported by Philippine solar outlets, distribution utilities must act on complete net-metering applications within 10 days. The word "complete" does the heavy lifting — utilities can still bounce incomplete files, so a thorough installer matters more than the deadline does.
• 100 kW system cap: net metering under RA 9513 covers systems up to 100 kW. Residential systems (3–10 kW) sit far below this — the cap rarely binds homeowners.
• ERC advisory context: a September-2025 ERC advisory already signaled tighter, more standardized interconnection procedures, which the 2026 circular builds on.

Bottom line for homeowners: the 2026 changes are about process speed and commercial-scale guardrails, not about whether residential net metering works. It does, and the economics below are what decide the payback.

Meralco's export rate: the number that matters

Meralco credits exported energy at an ERC-set rate below the retail rate — the exact figure can change, so confirm the current number with Meralco or your installer before finalizing system size. Compare that against a typical Meralco residential retail rate in the low-teens per kWh, and the picture is clear:

Scenario (1 kWh)	Value to you
Used directly (self-consumed)	≈ retail rate (₱11–14)
Exported for credit	ERC-set, below retail (confirm current)

Every self-consumed kWh is worth more than an exported one. Two practical consequences: run heavy appliances in daylight hours, and do not oversize the array "to export more" — surplus beyond your bill earns the lower rate and stretches payback. The export rate is ERC-set and can change; confirm the current rate with Meralco or your installer before finalizing system size. Our Philippines solar calculator estimates generation for your location and roof so you can size to consumption, not to exports.

Application steps and typical fees

The standard Meralco net-metering path, in order. A reputable installer usually handles steps 1–4 for you:

1. Site assessment and quotation — installer sizes the system to your daytime load and recent Meralco bills.
2. Application to Meralco — net-metering application form, single-line diagram, equipment specs, and proof of ownership/occupancy.
3. Technical evaluation — Meralco reviews interconnection feasibility for your service entrance.
4. Installation — panels, inverter, and wiring installed to Philippine Electrical Code.
5. Certificate of Final Electrical Inspection (CFEI) — issued by the city/municipal engineering office after inspection.
6. Meter installation — Meralco installs the bi-directional meter.
7. Net-metering agreement and ERC certificate — the interconnection agreement is signed; the system goes live.

Typical fees beyond the system itself (indicative 2026 ranges — installers bundle these differently, so get itemized quotes):

Fee item	Indicative 2026 range (PHP)
Application / processing fee	₱0–2,000
Bi-directional meter	₱5,000–15,000
CFEI and local permits	₱2,000–6,000
Installer processing / documentation	₱5,000–20,000

Well under 5% of a typical residential system cost — the fees are not the decision factor; the sizing is.

The payback math

A typical Metro Manila home using 400–600 kWh/month can zero most of its Meralco bill with a 3–5 kW system (Philippine rooftops see roughly 4–5 peak sun hours). At 2026 installed prices of roughly ₱45,000–65,000 per kW (indicative), a 5 kW system runs about ₱225,000–325,000 before fees.

Monthly savings come in two streams: avoided retail purchases (daytime self-consumption, the valuable part) plus export credits at the ERC-set rate (the smaller part). For a household with decent daytime use, that pencils out to roughly ₱6,000–10,000/month in combined savings — a simple payback in the 3–5 year range, with 20+ years of nearly free electricity after. Run your own bill through the solar ROI calculator to get a payback figure for your actual consumption pattern rather than these averages.

Batteries or net metering?

Pick net metering unless brownouts force your hand. The grid is a free, infinite, zero-maintenance "battery" under net metering — adding a battery bank (typically ₱150,000–300,000+ for a useful size) buys backup power, not extra savings, because stored-then-used kWh displace the same retail rate that daytime self-consumption already captures. Batteries make sense only where outage backup is the goal. For pure bill savings, every peso is better spent on panels than on storage.

Net metering vs net billing vs zero-export

Three regimes get confused in Philippine Facebook groups. They are not the same:

Regime	How surplus is treated	PH status
Net metering	kWh credits against imports	Standard for residential (RA 9513 / ERC rules)
Net billing	Peso credits at a set export rate	Discussed in policy circles; not the residential default
Zero-export	Limiter curtails surplus; nothing leaves the house	Used where interconnection is slow or unwanted

For a Meralco residential customer in 2026, net metering is the regime to pursue — it is the established legal path with the 10-day processing mandate behind it. Zero-export is a fallback if your application stalls, not a strategy: every curtailed kWh is generation you paid for and threw away.

Shift loads into the sun

The cheapest "battery" is a timer switch. Every kWh you move from evening to midday is a kWh that displaces the full retail rate instead of earning the lower export credit — a swing of roughly ₱2–4 per kWh in your favor. The high-value shifts:

• Water heater on a timer, 10am–2pm instead of evening.
• Washing machine and dryer run at midday.
• Aircon pre-cooling — chill bedrooms 2–4pm, coast through the evening on thermal mass.
• EV and device charging during peak sun hours.
• Pool pump scheduled for the solar window.

A household that shifts 5 kWh/day into sunlight keeps roughly ₱300–600/month extra versus exporting those same kWh — with zero additional hardware. Size the system to your shifted daytime profile using the Philippines solar calculator, and the payback math in the previous section gets better, not worse.