Putting solar on a home in Medan isn't really about saving money. It's about controlling your own energy, so when PLN tariffs rise, a regional blackout hits, or the North Sumatra grid stutters, your house doesn't follow the swing. Monthly savings still happen, but they're a bonus on top of the bigger decision: stop being fully leveraged to a single provider you have no negotiating power with.
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Medan's climate is tropical with irradiance 4.3 to 4.7 kWh per m2 per day, slightly below the Java average because of cloud cover, but still well above the threshold for residential solar economics. The neighborhoods that fit best: Polonia, Medan Baru, Medan Tuntungan, Medan Selayang, and Medan Sunggal, areas with plenty of landed homes and roomy roofs. Whether it actually fits your specific home is what we work out together.
TL;DR
- Independence level: a 2.5 kWp system in Medan covers about 50 to 55% of a 2200 VA home with a Rp 1.2 million monthly bill. The rest still comes from PLN, but you're no longer fully leveraged to its tariff.
- Typical setup: 2 to 5 kWp grid-tied or hybrid. Panels, inverter, mounting, install, warranty. Battery is optional if you want blackout backup.
- Medan climate: irradiance 4.3 to 4.7 kWh per m2 per day, humid tropical, rain September through March, temperatures 24 to 32 C.
- Investment: Rp 28 to 75 million depending on system size. Payback 5 to 7 years on a Rp 1 to 1.5 million monthly bill, then near-free electricity for the next 20 years.
- Our installer partner: covers all of Indonesia plus Sumatra. They've installed across a wide range of residential roof conditions.
- Not a fit if: your bill is below Rp 800,000/month, your roof has severe shading, or you're moving within 5 years.
Solar pricing in Medan, real April 2026 numbers
Rough range we're seeing from installer quotes in the Medan area as of April 2026:
| System | Fits | Full package price | Includes |
|---|---|---|---|
| 2 kWp grid-tied | Bills Rp 800k to 1.2 million | Rp 28 to 35 million | Panels, inverter, mounting, install, 25-year panel + 5-year inverter warranty |
| 2.5 kWp grid-tied | Bills Rp 1 to 1.5 million | Rp 35 to 45 million | Same |
| 3.5 kWp grid-tied | Bills Rp 1.5 to 2 million | Rp 50 to 60 million | Same |
| 5 kWp grid-tied | Bills Rp 2 to 3 million | Rp 60 to 75 million | Same |
| 5 kWp hybrid (+ 5 kWh battery) | Same, plus blackout backup | Rp 90 to 110 million | Plus battery storage |
Range stays wide because it depends on panel + inverter brand (Jinko vs Canadian vs LONGi, Sungrow vs Huawei vs SMA), roof condition, and distance from panels to the meter.
What to watch for in any installer quote:
- Panel and inverter brand specified, or just "equivalent"? Clear specs mean a serious installer.
- Product warranty vs install warranty. Panels are 25 years standard, inverters 5 to 10 years. Install warranty should be 2 to 5 years.
- ESDM or SLO certificate. Required for grid-tied systems that export to PLN.
Investment vs PLN dependency, the rough math
Independence isn't free. But the math also isn't as scary as most people assume. Assumptions we use (April 2026):
- R-1 tariff 1300 to 2200 VA: Rp 1,444 per kWh
- R-1 tariff 3500 to 5500 VA: Rp 1,699.53 per kWh
- Medan irradiance: about 4.5 kWh per m2 per day average
- Output per 1 kWp panel: about 100 to 115 kWh per month
A 2200 VA home, Rp 1.2 million monthly bill, 2.5 kWp system:
- Monthly output: 2.5 kWp x 105 kWh = 263 kWh
- Covers about 52% of the home's electricity: 263 kWh x Rp 1,444 = about Rp 380,000/month no longer flowing to PLN
- Per year: about Rp 4.6 million that used to be a PLN payment now stays in your house
- Investment: about Rp 40 million
- Payback: 40M / 4.6M = about 8.7 years (conservative). The remaining 16 years are self-produced electricity at near-zero cost.
If your daytime usage is heavy (working from home, daytime AC, electric cooking), coverage can hit 65 to 75% and payback drops to 6 to 7 years. What you're buying isn't just savings, it's durable independence: 25 years of your home being far less exposed to PLN tariff hikes, rupiah swings, and short-duration outages (with hybrid + battery).
Use the calculator for numbers specific to your home
Does Medan fit? Climate, roof, availability
Climate: yes. Medan irradiance averages 4.3 to 4.7 kWh/m2/day year-round. Humid tropical, with reasonably intense rain September through March, temperatures 24 to 32 C. The wet season is still productive, just about 25% off peak.
Roof: ideally south-facing (Medan is in the Northern Hemisphere, around 3.5 degrees N), 10 to 30 degree pitch. East or west still works, output drops about 10 to 15%.
Shading: check tall trees, neighboring buildings, or water towers that block the roof between 9 a.m. and 3 p.m. Polonia and Medan Baru have plenty of older homes with mature trees around them, so a shading survey matters here.
Installer: our partner technician team covers all of Indonesia plus Sumatra. They've installed across a wide range of residential roof conditions.
When solar isn't right for you yet
Independence is good, but it isn't right for everyone right now. Four situations where we'd say wait:
- Your PLN bill is below Rp 800,000/month: your dependence on PLN is already relatively small. Audit your usage first; you may need efficiency more than solar.
- Severe roof shading: output drops a lot, and the energy control you're buying becomes half-measured. Better to wait until you can trim the trees or solve the roof position.
- Plans to move within 5 years: the investment hasn't paid back by then, and the independence isn't easy to relocate.
- What you actually need is blackout backup, not long-term control: grid-tied solar doesn't back you up when PLN drops. Hybrid (solar + battery) or a generator fits better if backup is the real priority.
Frequently asked questions
Roughly Rp 35 to 45 million for a 2.5 kWp grid-tied package (panels, inverter, install, warranty). Payback is 4 to 6 years on a Rp 1 to 1.5 million monthly bill. At the survey, our partner technician team will recalibrate the numbers to match your roof condition.
