Puerto Rico is the one place in the United States where you cannot look up what solar costs, because no installer on the island posts a price. What you can look up, to the seventh decimal, is what you are paying for electricity instead: 29.24¢ per kilowatt-hour, made of a 8.648¢ base charge and 20.591¢ of riders, under Energy Bureau Order 46203 for July through September 2026. That number fell 2.66¢ on July 1, and the reason it fell has nothing to do with cheaper power. Understanding both halves of that sentence is most of what you need before you take a single quote.
What a Kilowatt-Hour Costs Here Right Now
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, which is why an islandwide figure quoted without a date is close to meaningless. Here is the current stack, in cents per kilowatt-hour.
Line on your bill | Jul to Sep 2026 | Apr to Jun 2026 | What changed |
|---|---|---|---|
Base energy charge (GRS) | 8.648¢ | 8.648¢ | Fixed by the FY2027 tariff, not quarterly |
Fuel (FCA) | 11.407¢ | 11.635¢ | Down 0.228¢ |
Purchased power (PPCA) | 5.175¢ | 4.558¢ | UP 0.617¢ |
Fuel oil subsidy (FOS) | 1.665¢ | 1.758¢ | Down 0.093¢ |
Municipal contributions (CILTA) | 0.739¢ | 0.442¢ | Up 0.297¢ |
Subsidies (SUBA) | 1.520¢ | 1.365¢ | Up 0.155¢ |
Energy efficiency (EE) | 0.085¢ | 0.085¢ | Unchanged |
Pension costs | 0¢ | 1.919¢ | Gone as of July 1 |
Provisional rider | 0¢ | 1.493¢ | Gone as of July 1 |
All in | 29.24¢ | 31.90¢ | Down 2.66¢, about 8.3% |
Read the last three rows together and the story is plain. Two riders expired, worth 3.41¢ between them, and that is the entire drop. Underneath them the cost of buying power from third parties went up 0.617¢, and fuel barely moved. Your bill fell because two charges finished, not because the island got cheaper to run. A household using 800 kWh a month saw about $21 a month leave the bill, roughly $255 a year, and that is $255 of savings solar no longer has to go and find.
There is a $8.00 monthly customer charge on top, which solar does not remove no matter how much you generate. Anyone modelling your payback against the widely repeated “$0.26 per kilowatt-hour” figure is using the January to March press number, which was never the all-in residential rate and is now two quarters out of date.
Nine Out of Ten Roofs Here Buy a Battery
Puerto Rico pricing is incomparable to mainland pricing for one reason: nearly every system here includes a battery. At the end of 2025 the island had 191,929 rooftop solar systems and 171,372 distributed batteries. That is an attachment rate near 89%, against roughly one in ten on the mainland. Total storage stands at 2,864 megawatt-hours, which works out to about 16.7 kWh per household, or a Powerwall and a half.
So when you compare a San Juan quote to a number you read on a mainland site, you are comparing a solar-plus-storage system to a bare array. Storage is frequently the largest single line in an island quote, and it is the line most likely to differ between two bids for the same roof. Ask for the array and the battery to be priced separately before you compare anything to anything.
Rooftop solar now accounts for 20% of the island’s generating capacity, with about 3,850 systems added every month through 2025. The 1,456 megawatts installed across those 191,929 systems averages 7.6 kW per system, and because that pool includes commercial roofs, a typical home sits below it. Enter your ZIP code and we will match you with installers who price the battery as its own line.
Compare island quotes with the battery priced separately
Why No Installer Here Will Post a Price
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. Not one of them 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 carrying no figures at all. This is not an oversight by four companies at once. It is how the island market works, and there are three reasons behind it.
- Almost every system includes storage, and storage is the variable. Battery capacity, chemistry and inverter pairing swing the total far more than panel count does, so a single headline price would mislead nine buyers out of ten.
- Roof and structural work is priced per house. Hurricane-rated attachment, older concrete roofs and re-roofing before mounting are common here and land in the same contract.
- The main incentive is rationed, not automatic. Whether you get it changes your net cost by thousands, and no installer can promise you a place in the queue.
The one published benchmark is a reported $3.00 per watt for panels alone, from a single mainland source, SolarReviews. It excludes the battery that nearly nine in ten island systems include, so treat it as a rough floor, not a quote.
There is no sourced islandwide price to give. The arithmetic below runs on your own bill and whatever quote is in front of you.
The Math You Can Do Before Anyone Quotes You
You do not need an installer to work out what a system has to beat. Take your last bill, find your monthly kilowatt-hours, and multiply by 29.24¢. That is what your power costs today. A home on 800 kWh a month is spending about $234 on energy plus the $8.00 charge, near $2,900 a year.
Now take any quote you are handed and divide. The table below runs the $2,808 a year of energy charges solar can actually offset against a range of quoted prices at two offset levels, because how much of your bill a system actually erases is the variable installers differ on most. Simple payback, no financing, no escalation.
Quoted system price | Years to pay back at 70% bill offset | Years to pay back at 90% bill offset |
|---|---|---|
$18,000 | 9.2 years | 7.1 years |
$24,000 | 12.2 years | 9.5 years |
$30,000 | 15.3 years | 11.9 years |
$36,000 | 18.3 years | 14.2 years |
$42,000 | 21.4 years | 16.6 years |
Two things fall out of that table. Rising rates shorten every row, and a rate that just dropped 2.66¢ lengthens them slightly. And the offset column matters as much as the price column: a cheaper system that only covers 70% of your usage can pay back slower than a dearer one that covers 90%. Make every bidder state the offset they are promising, in kilowatt-hours, next to their price.
The Benefit That Arrives After the Install, Not Off the Sticker
The federal residential credit is the change most quotes have not caught up with. Section 25D is $0 for any system whose installation is completed after December 31, 2025, under Public Law 119-21. If a salesperson subtracts 30% from your total on that basis, the quote is wrong and so is the payback attached to it. What Puerto Rico has instead is a stack that pays over time rather than at signing, and it is genuinely strong.
- Net metering at full retail value. Act 114-2007, as amended by Act 10-2024, credits exports at the full retail rate and bars the Energy Bureau from revisiting the tariff until 2031. At 29.24¢ that is the most valuable export treatment in the United States. The Financial Oversight Board sued to nullify the 2024 amendment on July 26, 2024 and that case is still live, so the protection is strong but not beyond challenge.
- Programa Incentivo Solar, 30% up to $15,000. Rationed by ticket rather than granted on application, and it requires an authorized installer to be engaged first. We could not confirm current ticket availability: incentivosolar.pr.gov refused our requests when we checked on August 16, 2026. Call 787-522-2000 and confirm your own position before you count a cent of it.
- Battery payments from LUMA. The Customer Battery Energy Sharing programme moved from pilot to a full FY2026 to FY2028 programme and pays $1.00 per kilowatt-hour delivered during grid events, through five approved aggregators. On the island’s 89% attachment rate this is a real return on the most expensive part of the system.
- Act 83-2010 exemptions. Sales tax (IVU) and property tax exemptions on qualifying equipment, which reduce the total without appearing as a rebate.
The shape of that stack should change how you read a bid. A quote leaning on an upfront discount is describing a world that ended in December. A quote built around retail-rate export credits and battery dispatch income is describing the one you actually live in. Our Puerto Rico incentives guide walks each programme in full, including three that competitors still advertise and that no longer exist.
Who Should Wait in Puerto Rico
- Anyone handed a quote that still subtracts the 30% federal credit. The arithmetic is wrong by thousands and the payback attached to it is fiction. Ask for it to be rebuilt before you compare it to anything.
- Roofs that need work first. Mounting onto a roof with a few years left means paying to remove and reinstall the array later, and that cost is rarely in the original bid.
- Buyers counting on Programa Incentivo Solar before confirming a ticket. A $15,000 assumption that does not arrive is the difference between the top and bottom rows of the table above.
- Anyone being sold a battery with no dispatch plan. If nobody has mentioned an aggregator or the Customer Battery Energy Sharing programme, the most expensive component in your system is doing one job when it could be doing two.
None of that is a reason to stay on the grid at 29.24¢. It is a reason to make the quote answer for itself. If you would rather compare companies before you compare prices, start with our ranked Puerto Rico installers, then come back here with their numbers.
Puerto Rico Solar Cost FAQs
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.
29.24¢ per kilowatt-hour all in for July through September 2026, under Energy Bureau Order 46203. That is an 8.648¢ base energy charge plus 20.591¢ of riders, plus an $8.00 monthly customer charge. The riders reset every quarter, so any Puerto Rico rate quoted without a date is unreliable.
Two riders ended. The pension costs rider at 1.919¢ and the provisional rider at 1.493¢ both went to zero on July 1, 2026, worth 3.41¢ together. Fuel fell only 0.228¢ and purchased power actually rose 0.617¢, so the net drop was 2.66¢ per kilowatt-hour, about 8.3%. On 800 kWh a month that is roughly $21.
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, and LUMA’s Customer Battery Energy Sharing programme pays $1.00 per kilowatt-hour delivered during grid events.
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. At 29.24¢ that is the most valuable export treatment in the United States. The Financial Oversight Board filed suit to nullify the 2024 amendment on July 26, 2024 and that case remains live.
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, the ticketed Programa Incentivo Solar at 30% up to $15,000, battery dispatch payments, and the Act 83-2010 sales and property tax exemptions.
You have the rate, the arithmetic and the questions to put to a bidder. Enter your ZIP code and we will bring you installers who will answer them in writing.
Get bids that answer in writing
Methodology: rate figures are computed from the LUMA FY2027 tariff book (General Residential Service base charge) and the Table of Factors for Adjustments, as approved in Puerto Rico Energy Bureau Resolution and Order 46203 for the July to September 2026 quarter, retrieved August 16, 2026. EcoGen recomputed the fuel and purchased power riders from the Energy Bureau’s own reconciliation inputs against 4,215,309,392 kWh of applicable retail sales and matched the posted values to seven decimals. Payback figures are simple payback on $2,808 of annual offsettable energy charges with no financing cost and no rate escalation, and are illustrative of the arithmetic rather than a quote. Riders reset quarterly, so these figures should be refreshed each quarter. The EcoGen Solar Cost Index does not cover Puerto Rico and is deliberately not used on this page.
References & Research Sources
EcoGen America reviewed LUMA’s filed rates and tariff book, the Puerto Rico Energy Bureau’s quarterly rider orders, federal energy data, Puerto Rico’s net metering and tax exemption statutes, federal tax guidance, and the island’s leading installers’ own published pages for this Puerto Rico solar cost guide. Sources were accessed August 15 to 16, 2026, unless another date is listed below.
- LUMA Energy. Current Rates for Electric Service in Puerto Rico. FY2027 tariff book and Table of Factors behind every rate line on this page. Retrieved August 16, 2026.
- Puerto Rico Energy Bureau (NEPR). Resolution and Order 46203; Order 46108. Quarterly rider reconciliation orders for July to September 2026 and the prior quarter. Accessed August 16, 2026.
- U.S. Energy Information Administration (EIA). Today in Energy, April 2, 2026. Analysis citing the Energy Bureau’s Quarterly Report on System Data for rooftop solar and storage counts as of the end of 2025. Accessed August 16, 2026.
- Government of Puerto Rico. Act 114-2007 as amended by Act 10-2024; Act 83-2010. Full-retail net metering statute and solar equipment tax exemptions, administered by the Puerto Rico Energy Bureau. Accessed August 16, 2026.
- Internal Revenue Service (IRS). One, Big, Beautiful Bill Provisions. Guidance on Public Law 119-21, including termination of the Section 25D residential credit for systems whose installation is completed after December 31, 2025. Accessed August 15, 2026.
- Power Solar, WindMar Home, Máximo Energy and ProSolar Systems. Own-site published disclosures. Four-company check confirming no island installer publishes a system price, cost per watt or sample payment. Verified August 16, 2026.
