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Estimator pricing basis

The online estimator prices a system in two parts:

  • MARSTEK equipment at the Philippine SRP from the price list, unchanged.
  • Solar installation (panels, mounting, inverter, wiring, labour, design, permits, commissioning) from the defaults below. They were set from published Philippine installer packages and shop listings, and reviewed again on 10 October 2026 against how Philippine installers quote.

Admins can change every value on the estimator's admin page. These are market-based estimates, not supplier quotes. Replace them with Silvera's own supplier and installer quotes as they come in.

Defaults and their basis​

All values are VAT-inclusive retail prices.

ItemDefaultMarket range foundBasis
Solar panel620 W N-type at ₱13/W (≈ ₱8,060 each)₱9–19/WTongwei 615 W ₱5,500 (Sungrid); SolarPower Energy Jinko 625–725 W ₱6,900, LONGi ₱6,500 (5-piece minimum); AE 550 W ₱8,500 and Bluesun 700 W ₱13,000 (RSS)
Mounting₱1,500 per panel₱900–2,500Rail ≈ ₱519/m (Solaric) plus feet and clamps (Sungrid)
Electrical BOS₱12,000 + ₱2/W₱8,000 + ₱1/W to ₱18,000 + ₱3/WBreaker, isolator, combiner and cable listings (LakaSolar, Sungrid)
Grid-tie inverter (VENUS E only)₱7,000/kW, minimum ₱25,000₱5,000–10,500/kWDeye 5 kW ₱27,000; Solis 10 kW ₱60,000; Huawei 5 kW ₱52,000
Installation labour₱8/W, minimum ₱20,000₱6–10/W; ₱20,000–50,000 by roof typeInstaller cost guides, Aug 2026
Design, engineering & project management20% of the installation workInstaller margin and overhead ≈ 15–25%Component costs alone come to ≈ ₱38/W, but installers sell at ₱42–48/W
Testing, commissioning & owner orientation₱4,000Inside labour, or a separate visit with a fee (MARSTEK PH training, 5 Oct 2026)Itemised so the test report and handover are a deliverable
LGU electrical permit, CFEI & engineer-signed plans₱6,000, at cost₱2,000–8,000 by citypinas.solar and SurgePV compliance guides, 2026
Delivery & mobilizationBatangas: included; rest of Luzon ₱8,000; Visayas / Mindanao ₱25,000Cebu +₱5–10k; Davao +₱15–25k; remote +₱30–60ksolarstreamph, LakaSolar (2026)
Net-metering (optional)₱18,000₱10,000–35,000Meralco application free; ERC certificate ₱1,500; meter up to ₱3,000 (ERC, Sept 2025); plus plans and processing
VAT12%, already included in the prices—The RE Act (RA 9513 Sec. 15) zero-rates RE developers only; home buyers pay 12%

The quote shows the VAT inside the total. MARSTEK SRPs are consumer prices that already include VAT, so VAT is not added on top. The design share is not applied to MARSTEK equipment, permits, commissioning or mobilization.

Sizing and savings assumptions​

Reviewed 10 October 2026 against irradiance databases, measured Philippine yields and the latest utility rate schedules.

AssumptionValueBasis
Peak sun hoursPer area, from the Global Solar Atlas and NASA POWER (2001–2025): Batangas City 5.0; Lipa and Tanauan 4.8; Nasugbu, Lemery and Balayan 5.0; San Juan and Rosario 5.2; Cavite, Laguna and Quezon 5.0; Metro Manila 4.6GSA / NASA agree within 0.4 h
Performance ratio75%99 Philippine systems measured in 2025 averaged 1,298 kWh per kWp per year, 13–19% below the irradiance models (Solaren); a Tarlac study measured 77%
Expected yield, Batangas City≈ 3.7 kWh per kWp per day5.0 h × 0.75
Battery90% depth of discharge, 90% round-trip efficiency (≈ 81% of nameplate usable)Installer guides; MARSTEK manuals
Electricity rateFrom the bill when an amount is entered; otherwise the utility's published rate. For Meralco the rate steps up with consumption: ₱14.74 (≤200 kWh), ₱15.09 (201–300), ₱15.42 (301–400), ₱15.99 (>400)Meralco September 2026 rate schedule; the distribution charge applies to all kWh
Net-metering creditThe utility's generation charge: Meralco 66% of the rate (₱9.70), BATELEC I 59%, BATELEC II 55%, VECO 54%, Davao Light 53%, others 60%ERC Resolution 15 s. 2025; September 2026 rate schedules
Savings capSavings never exceed the current billCredits only offset the bill; they are never paid out
Tariff escalation4.5% per yearMeralco residential rate rose 4.4% per year on average from 2016 to 2025
Panel degradation1% in year 1, then 0.4% per yearN-type TOPCon warranties (Jinko, LONGi, JA, Trina)
Battery fadeCapacity falls to 80% by year 15LFP warranty curves (6,000+ cycles)
Inverter replacementOne grid-tie inverter replacement at year 12 (VENUS E systems only)Installer ROI methodology
Estimate accuracy±10% planning band before the site surveyPhilippine calculators quote ±10–15%

What the quotation now shows​

Philippine installers quote with a site survey first, an itemised list, explicit inclusions and exclusions, warranty lines, a payment schedule and a validity period. The estimator's quotation now carries the same elements:

  • an estimated range (±10%) around the total, with the exact price fixed after the free site survey;
  • brownout backup hours on about 600 W of essential loads, and on the home's own night load when appliances are ticked;
  • net 10-year savings as the headline (within every warranty), with the 25-year figure in the PDF;
  • the net-metering credit rate used, or a note that a zero-export system needs no net-metering fees and no ERC certificate (DOE Circular DC2026-08-0017, August 2026);
  • included / not included lists, warranties (MARSTEK equipment per MARSTEK Philippines policy, panels per their maker, workmanship 1 year), and payment and schedule (30% down, balance on commissioning; 2–3 weeks to installation; 30-day validity);
  • a unique quotation number shared by the screen, the PDF and saved quotes.

Check against published packages​

The solar part of an estimator quote (the total without the MARSTEK battery) lines up with VAT-inclusive installed grid-tie packages:

System sizeEstimatorPublished package
~3.1 kWp₱55/W2cay Solar 3.3 kW: ₱166,000 (₱50/W)
~5.6 kWp₱47/W2cay 5.5 kW: ₱251,000 (₱46/W); EcoSolutions 5 kW: ₱260,000 (₱52/W)
~8 kWp₱45/W2cay 8.25 kW: ₱356,000 (₱43/W)
~9.3 kWp₱44/W2cay 9.35 kW: ₱387,000 (₱41/W)

Complete systems with a MARSTEK battery (600 kWh/month Meralco home, net-metered):

Estimator quoteTotal (range)Comparable market price
VENUS E 3.0 (5.12 kWh) + 4.96 kWp₱355,696 (₱320,000–391,000)2cay 5.55 kW + 5.12 kWh hybrid: ₱379,000; ranges for 5 kW + 5 kWh: ₱280,000–350,000
MARS I PLUS 10.24 kWh + 4.96 kWp₱483,696 (₱435,000–532,000)Ecoplus 5 kWp + 10 kWh hybrid: ₱420,000–600,000
V6000 (15 kWh) + 6.2 kWp₱456,520 (₱411,000–502,000)15 kWh all-in-one systems installed: ₱250,000–430,000

Where the MARSTEK SRPs sit in the market​

  • VENUS E 3.0, ₱120,000: about ₱23,400 per kWh bare, 20–65% more per kWh than bare LFP racks (Deye, Dyness ₱14,000–19,000/kWh), but it includes its own 2.5 kW inverter and plugs into a socket, so no hybrid-inverter swap (₱38,000–70,000) is needed. Installed as a retrofit it lands in the middle of the Philippine range (₱90,000–185,000). Sell the avoided inverter and labour, not the ₱/kWh.
  • MARS I PLUS 6 kW + 15.36 kWh, ₱390,000: about ₱25,400 per kWh including the inverter, in the upper half of the Philippine hybrid band (₱18,000–26,000/kWh), cheaper than Sungrow, BYD or Huawei installed, dearer than Deye + Dyness builds.
  • V6000 15 kWh, ₱225,000: about ₱15,000 per kWh including its 6 kW inverter, the low end of the all-in-one band; the most competitively priced unit.
  • VENUS E Mini: no Philippine price yet; EU retail converts to ₱35,000–46,000.

What still needs a real quote​

  • Panel model and price. Get dated quotes for the same model at 1, 5 and 10 pieces and a full pallet, delivered to Batangas, ex-VAT and VAT-inclusive.
    • The MARSTEK Infinity (695–720 W) launch is public (BusinessMirror, 18 Aug 2026), but no price or model code is. marstek.ph is still a "launching soon" page.
    • Its specs match DMEGC's earlier Infinity G12T-B66HSW 695–720 W panel. No public source names DMEGC as the maker.
  • Installer labour and scope for Batangas roofs, by roof type (GI sheet, tile, concrete).
  • MARSTEK Philippines warranty text. Marketing says 10 years; the published EU policy is replacement in years 1–2 and repair-or-replace to year 10. Put the Philippine terms in the contract before quoting a number.
  • BATELEC net-metering fees. Both cooperatives accept applications (BATELEC II form, September 2025); their fee schedules are not published.
  • MARS I PLUS expansion box/kit for more than 3 battery modules. The estimator flags it but does not price it.
  • VENUS E Mini price. It is not on the SRP flyer, so its price stays marked indicative.
  • Workmanship warranty and payment terms shown on the quotation (1 year; 30% down) follow Philippine practice. Confirm Silvera's own terms.

Sources​