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No installer in Puerto Rico posts a price, and the EcoGen Solar Cost Index does not price the island either. A modeled home array is 3.50 kW, before the battery that most island systems add. What you can pin down is your rate: 33.858¢ per kWh all in for October to December 2026, and that is the number every quote has to beat.
Compare island quotes with the battery priced separately
Storage is usually the biggest line in a Puerto Rico quote, and the one two bids differ on most. Enter your ZIP code to find installers who price it as its own line.
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What a kilowatt-hour costs on your LUMA bill this quarter
Your bill is not one rate. It is a small base charge plus a stack of riders that the Energy Bureau resets every three months. A Puerto Rico rate quoted without a date is close to meaningless. For the national picture, see the nationwide cost benchmarks.
October to December 2026, cents per kWh on an 800 kWh bill (July to September in brackets)
The all-in price at 800 kWh rose 5.284¢, about 18.5%, under the Energy Bureau’s September 30, 2026 order. It already includes the $8.00 customer charge, so do not add that charge again.
The $8.00 you keep payingA $8.00 monthly customer charge is on every bill, and the 33.858¢ figure already counts it. Solar does not remove it, no matter how much you generate.
Ignore the “$0.26 per kilowatt-hour” figureIt is the January to March press number. It was never the all-in residential rate, and it is now three quarters out of date.
Why the October bill rose, and what it means for solar
Read the top of the rate stack. Fuel and purchased power drive this quarter’s bill, and the offset takes only a little back.
Fuel and purchased power
The fuel charge (17.3576¢) and the purchased power charge (4.5090¢) together make up nearly two thirds of the 33.858¢ all-in price.
The offset
The offset factor (FOS) is a credit, so it lowers the bill. Count it with a minus sign, not as another charge.
What the rise means for solarA home using 800 kWh a month pays about $42 a month more than in July to September, roughly $507 a year. Each kWh your panels replace is worth more this quarter, and the next quarterly reset can move it again.
Run the payback on your own bill before anyone quotes you
Take your last bill, find your monthly kWh and multiply by 33.858¢. At 800 kWh a month the Energy Bureau’s reference bill is $270.86, including the $8.00 charge, about $3,250 a year if usage and charges stay the same. Solar cannot remove the $8.00 charge, so at most about $3,154 a year is within reach, and how much of it a system erases depends on your usage and net metering. Divide any quote by what the system will actually erase. We do not show a payback figure here, because no installer posts a price for Puerto Rico.
Offset matters as much as priceA cheaper system that covers only 70% of your usage can pay back slower than a dearer one that covers 90%. Make every bidder state the offset they promise, in kWh, next to their price.
Rates move the paybackRising rates shorten every payback, and this quarter’s 5.284¢ rise does. The next quarterly reset can undo it.
191,929 solar roofs, 171,372 batteries: why island quotes are not mainland quotes
Nearly every system here includes a battery. A San Juan quote is a solar-plus-storage system, and a mainland price is usually a bare array. At the end of 2025 the island counted:
The 1,456 MW installed across those systems averages 7.6 kW per system. That pool includes commercial roofs, so a typical home sits below it.
Price the battery on its own lineStorage is often the largest single line in an island quote, and the line most likely to differ between two bids for the same roof. Ask for the array and the battery priced separately before you compare anything.
Four installers checked, zero prices posted
In August 2026 we checked every solar company in our Puerto Rico database against its own website: Power Solar, WindMar Home, Máximo Energy and ProSolar Systems. None shows a system price, a cost per watt, a system size or a sample monthly payment. Power Solar names its financing partners and routes you to a consultation. WindMar links a financing page with no figures. This is how the island market works, for three reasons.
+What makes every island quote different
- The batteryCapacity, chemistry and inverter pairing swing the total far more than panel count does. One headline price would mislead nine buyers out of ten.
- Roof and structural workHurricane-rated attachment, older concrete roofs and re-roofing before mounting are common here. They land in the same contract and are priced per house.
- A closed incentiveThe Programa Incentivo Solar is closed to new applications. Count it only if Vivienda already confirmed your ticket.
Closed
−What you can pin down before a quote
- Your rate33.858¢ per kWh all in for October to December 2026, from the Energy Bureau’s $270.86 reference bill at 800 kWh.
- Your own usageThe monthly kWh on your last bill. Multiply by the rate to see what a system has to beat.
- A panels-only lineThe EcoGen Index does not price Puerto Rico. Ask each bidder for the array on its own line, apart from the battery most island systems include.
The benefits that pay back after the install, not off the sticker
What Puerto Rico offers pays over time rather than at signing, and it is genuinely strong.
A quote that subtracts 30% is wrongThe federal Section 25D credit is $0 for any system whose installation is completed after December 31, 2025, under Public Law 119-21. If a salesperson takes 30% off your total, the quote and its payback are both wrong.
Exports are credited at the retail rate, and the Energy Bureau cannot revisit the tariff until 2031. With LUMA’s all-in price at 33.858¢, it is one of the most valuable export treatments in the United States. The Oversight Board, which sued over the 2024 amendment, says invalidating Act 10 would not change the current program. Credit still unused at the yearly settlement is bought at 10¢ per kWh or more, which is not the ordinary export credit.
Closed to new applications. It ran one ticket round, on August 10, 2023. If you already hold a ticket, call 787-522-2000 to confirm your position before you count on it.
LUMA pays this for power your battery delivers during grid events, through seven approved aggregators. Your share depends on your contract with the aggregator. Now a full FY2026 to FY2028 program, no longer a pilot.
IVU and property tax exemptions on qualifying equipment. They lower the total without showing up as a rebate.
A quote leaning on an upfront discount describes a world that ended in December. A quote built on retail-rate export credits and battery dispatch income describes the one you live in. Our Puerto Rico incentives guide walks each program in full, including three that competitors still advertise and that no longer exist.
When to hold off on solar in Puerto Rico
None of this is a reason to stay on the grid at 33.858¢. It is a reason to wait until the quote answers for itself:
- Your quote still subtracts the 30% federal credit. The arithmetic is wrong by thousands, and so is the payback. Ask for it to be rebuilt before you compare it to anything.
- Your roof needs work first. Mounting on a roof with a few years left means paying to remove and reinstall the array later. That cost is rarely in the original bid.
- You are counting on Programa Incentivo Solar without a confirmed ticket. A missing $15,000 adds years to the payback.
- You are being sold a battery with no dispatch plan. If nobody mentions an aggregator or the Customer Battery Energy Sharing program, the most expensive part of your system does one job when it could do two.
What to make a Puerto Rico bidder put in writing
Every point below comes from the math on this page. Ask each bidder to answer it on paper:
- What does the array cost, and what does the battery cost, as separate lines?
- What share of my bill will the system offset, in kWh a year?
- Does the price or payback subtract a 30% federal credit? It should not.
- Which aggregator will enroll my battery in the Customer Battery Energy Sharing program?
- Are you an authorized Programa Incentivo Solar installer, and is my ticket confirmed?
- Does the payback use the current LUMA bill (33.858¢ all in at 800 kWh, with the $8.00 charge counted once), not the old $0.26 figure?
- Does the payback credit exports at full retail, and use 10¢ only for credit left unused at the yearly settlement?
To compare companies before you compare prices, start with our ranked Puerto Rico installers, then come back with their numbers.
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More Puerto Rico solar guides
Frequently asked questions
How much do solar panels cost in Puerto Rico in 2026?
No installer on the island posts a price. We checked Power Solar, WindMar Home, Máximo Energy and ProSolar Systems on their own sites in August 2026 and none shows a system price, a cost per watt or a sample payment. Island quotes almost always include a battery, which is usually the largest line, so ask for the array and the storage to be priced separately before comparing bids.
What is the electricity rate in Puerto Rico right now?
33.858¢ per kilowatt-hour all in for October through December 2026, from the Energy Bureau’s reference bill of $270.86 for 800 kWh a month (order of September 30, 2026). That figure already includes the $8.00 monthly customer charge, so do not add it again. Per kWh, the fuel charge is +17.3576¢, purchased power +4.5090¢ and the offset −2.0822¢. The riders reset every quarter, so any Puerto Rico rate quoted without a date is unreliable.
Why did my LUMA bill go up in October 2026?
The quarterly charges rose. For October to December 2026 the Energy Bureau’s reference bill at 800 kWh is $270.86, or 33.858¢ per kilowatt-hour all in, up from 28.574¢ in July to September. The fuel charge alone is 17.3576¢ per kWh. On 800 kWh a month that is about $42 more.
Do I need a battery with solar in Puerto Rico?
Nearly everyone buys one. At the end of 2025 the island had 191,929 rooftop solar systems and 171,372 distributed batteries, an attachment rate near 89%, averaging 16.7 kWh each. Storage is also the line most likely to differ between two bids. Through LUMA’s Customer Battery Energy Sharing program, LUMA pays one of seven approved aggregators $1.25 per kilowatt-hour your battery delivers during grid events; your share depends on your contract with the aggregator.
Does Puerto Rico still have net metering?
Yes, at full retail value. Act 114-2007 as amended by Act 10-2024 credits exports at the retail rate and bars the Energy Bureau from revisiting the tariff until 2031. With LUMA’s all-in price at 33.858¢ for October to December 2026, that is one of the most valuable export treatments in the United States. The Oversight Board, which sued over the 2024 amendment, says invalidating Act 10 would not change the current net metering program. Credit still unused at the yearly settlement is bought at 10¢ per kWh or more; that is not the ordinary export credit.
Can I still claim the 30% federal solar tax credit in Puerto Rico?
No. Section 25D is $0 for any system whose installation is completed after December 31, 2025, under Public Law 119-21. Any quote that subtracts 30% on that basis is wrong. Puerto Rico’s remaining support arrives after the install instead: retail-rate net metering, battery dispatch payments, and the Act 83-2010 sales and property tax exemptions. The Programa Incentivo Solar (30%, up to $15,000) is closed to new applications; count it only if Vivienda already confirmed your ticket.
How we calculate these costs
Rate figures for October to December 2026 come from the Energy Bureau’s Resolution and Order of September 30, 2026 (NEPR-MI-2020-0001), pages 8 to 11 and Annex 4, read October 6, 2026: the $270.86 reference bill at 800 kWh (33.858¢ all in, including the $8.00 customer charge; 28.574¢ in July to September) and the fuel (+17.3576¢), purchased power (+4.5090¢) and offset (−2.0822¢) factors. The remaining 14.07¢ in the rate table is the all-in price minus those three factors: the base charge from the LUMA FY2027 tariff book, the other riders and the customer charge. Battery-program terms come from LUMA’s filing on the permanent Customer Battery Energy Sharing program, reviewed October 6, 2026. Riders reset quarterly, so these figures are refreshed each quarter. Puerto Rico is not priced in the EcoGen Solar Cost Index (September 2026 Edition). The 3.50 kW home size is modeled, panels only, and Puerto Rico is not part of the $2.89 national average. For comparison with the states, EIA’s residential average for Puerto Rico was 25.14¢ per kWh in May 2026; this page uses the current LUMA all-in rate because it is what your bill charges.
Sources (8)
- LUMA Energy, Current Rates for Electric Service in Puerto Rico: FY2027 tariff book and Table of Factors (retrieved August 16, 2026): lumapr.com
- Puerto Rico Energy Bureau (NEPR), Resolution and Order of September 30, 2026: adjustment factors and reference bill for October to December 2026, NEPR-MI-2020-0001 (read October 6, 2026): energia.pr.gov
- U.S. Energy Information Administration, Today in Energy, April 2, 2026: rooftop solar and storage counts at the end of 2025: eia.gov
- Government of Puerto Rico, Act 114-2007 as amended by Act 10-2024; Act 83-2010 (accessed August 16, 2026): energia.pr.gov
- Financial Oversight and Management Board for Puerto Rico, Act 10 FAQ (reviewed October 6, 2026): oversightboard.pr.gov
- LUMA Energy, Motion to Submit Permanent Customer Battery Energy Sharing Program Proposal (reviewed October 6, 2026): energia.pr.gov
- IRS, One, Big, Beautiful Bill Provisions: Public Law 119-21 and the end of Section 25D (accessed August 15, 2026): irs.gov
- Power Solar, WindMar Home, Máximo Energy and ProSolar Systems, own-site published disclosures (verified August 16, 2026)
