Jakarta, DKI Jakarta
Serving: Jakarta, Tangerang, Bekasi +2 more
SOLAR PLANNING HUB · INDEPENDENT
Every calculation is traced to a primary source — NASA POWER, PLN tariffs, ESDM regulations. A curated contractor directory. Merit-based ranking, with conflicts of interest disclosed.
DNA · 4 Visual Primitives
An editorial visual language repeated across the calculator, directory, and articles — so SolarPlanner's identity is clear without being explained.
Frame data with steel brackets — not decoration, but an audit-grade citation marker.
Source heading, citation chip, KPI cell
An amber dot as a data anchor — marking a numeric fact or a live signal.
Trust pip, citation marker, list bullet
Tick-mark lines — the basis of a data axis and a consistent editorial grid.
Section divider, axis tick, table border
A cumulative growth line — visualizing payback, ROI, and long-term projections.
Payback chart, capacity projection, KPI sparkline
SolarPlanner.id is not a contractor. Nor is it a marketplace. We are an independent planning hub — where the consumer wins.
Irradiance from NASA POWER, tariffs from official PLN, emission factors from ESDM. No 'magic' numbers without a source.
Every contractor in our directory already holds a Ditjen Gatrik SLO + audited portfolio. Not paid advertising.
An article library: from EPC contracts to reading an SLO. You're empowered when negotiating — not left guessing.
How It Works · 4 Steps
Enter an address or pick coordinates — we load NASA POWER irradiance (1984-2023) for the nearest point.
Enter your PLN bill. The calculator engine uses cited Q2 2026 tariffs + 0.5%/year panel degradation.
A curated directory — active PLN SLO, service SBU, at least 3 documented projects.
Export your estimate as a PDF + share link. Bring it to contractor meetings for informed negotiation.
Numbers We Stand Behind
Irradiance Indonesia
The annual average daily range across 385 coordinates (38 provinces + 347 cities/regencies), summarized from 40 years of data.
Rooftop Solar Payback
The typical range for a 3–5 kWp residential system on the R-1 1,300 VA tariff, assuming 5%/year tariff inflation + 0.5%/year panel degradation.
PLN Tariff Sync
The PLN electricity tariff snapshot is updated each quarter from pln.co.id — the calculator uses the latest data, not estimates.
// All numbers cited · Methodology open at /metodologi
Featured Contractors
We review documents, certifications, and portfolios before a contractor appears in the directory. Here is a sample that has passed curation.
// 5-criteria audit · Gatrik SLO · service SBU · 3+ projects · no "guaranteed payback" claim · insurance liability
Jakarta, DKI Jakarta
Serving: Jakarta, Tangerang, Bekasi +2 more
Bandung, Jawa Barat
Serving: Bandung, Cimahi, Bandung Barat +1 more
Surabaya, Jawa Timur
Serving: Surabaya, Sidoarjo, Gresik +1 more