Solar Calculator

How Much Can You Save With Solar?

Based on real Philippine data ยท Results update live

๐Ÿ’กAverage Electric Bill
โ‚ฑ
โ‰ˆ 874 kWh/month
๐Ÿ“Location
๐Ÿ Roof Space
64 mยฒ
Fits up to 24 panels
6AM9AM12PM3PM6PMNo treesNo buildings
Assumes direct sunlight 6AMโ€“6PM, no shading
๐ŸŒ™Usage Pattern
๐ŸŽฏWhat's Your Goal?
๐Ÿ”„
Net Metering
Excess solar exported for bill credits (+โ‚ฑ30K)
โšก Requires a separate application to your electric utility (DU) โ€” not included in most solar packages
Costs ~โ‚ฑ30K to apply. Excess solar is credited at โ‚ฑ7.7/kWh on your bill.
โšกBrownouts in Your Area?
None
None~2~5~1020+
Options sorted by best value (ROI)
๐Ÿš—
Planning to Get an EV?
Toggle to see how an EV affects your electric bill
๐Ÿ’ฐYour Budget
โ‚ฑ
We'll show the best options within this budget
Options within โ‚ฑ300,000
Best Value for Money โ€” Grid-Tied + Net Metering gives the fastest payback and highest ROI. Need brownout protection? Go with a Hybrid (with battery) option.
โ˜… Best Value for Money
1
๐Ÿ”„
Grid-Tied
Panels
9.9kW
16-21 panels
Inverter
10kW
grid-tied
Yearly Output
14,209 kWh
1,184 kWh/mo
Investment
โ‚ฑ297,500
Payback
2.3 yr
ROI 1403%
Bill afterโ‚ฑ300โ€“โ‚ฑ3,128/mo
Saves per yearโ‚ฑ131,315
25-year net savings*โ‚ฑ4,175,295
*Assumes 3% annual electricity rate increase and 0.5% panel degradation/year
Details
โ€ขNo battery โ€” all solar goes directly to the grid or your daytime load
โ€ขVery fast payback at 2.3 years
Monthly Generation vs Usage
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Solar (short)
Solar (excess)
Usage
๐Ÿ›ก๏ธ Brownout Protection
2
๐Ÿ”‹
Hybrid 5 kWh
๐Ÿ”‹ 5 kWh โ€“ 18% night coverage ยท 1h brownout
Panels
6.6kW
11-14 panels
Inverter
8kW
hybrid
Yearly Output
9,473 kWh
789 kWh/mo
Investment
โ‚ฑ294,500
Payback
2.8 yr
ROI 1084%
Bill afterโ‚ฑ2,329โ€“โ‚ฑ4,990/mo
Saves per yearโ‚ฑ103,339
Battery replace (~yr 15)โ‚ฑ33,000
25-year net savings*โ‚ฑ3,191,571
*Assumes 3% annual electricity rate increase and 0.5% panel degradation/year
Details
โ€ขBattery is mainly for brownout backup โ€” only covers 18% of your nightly usage
โ€ขCan keep your home running for ~1h during a brownout
โ€ขSmaller panel system (6.6kW vs 9.9kW) โ€” part of the budget goes to battery instead of more panels
โ€ขVery fast payback at 2.8 years
Monthly Generation vs Usage
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Solar (short)
Solar (excess)
Usage
82% PR. 3% rate increase/yr. NM: โ‚ฑ30,000. Battery reserve: 30% SOC.
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