Best Solar Design Software Poland: 2026 Guide

Polish solar design stopped being about generation in April 2022. Net billing replaced net metering, exports now settle at the RCEm market reference rate rather than being banked one for one, and that rate sits far below what a prosumer pays to import. In May 2026 RCEm was 191.37 PLN per MWh, roughly 0.19 PLN per kWh, and the month before it was 132.92, the lowest since the mechanism began. Against retail import several times higher, capacity that generates energy the household cannot use at that moment earns very little. The design question became how much of the generation lands inside the load curve, and that is an hourly question. This guide covers what Polish design software has to do, and which tools do it.

Short version. The best solar design software for Polish installers in 2026 is SurgePV, because net billing turned design into an hourly self-consumption and storage optimisation and SurgePV simulates both together against net billing prices. PVsyst is the bankable reference for large ground-mount. PV*SOL is well established in Polish residential work. Aurora assumes US net metering, which Poland moved away from four years ago.

For the quoting side see our best solar proposal software Poland guide, the shading-specific treatment in solar shading analysis software Poland, and the global best solar design software ranking.

Net Billing Made Sizing An Hourly Problem

Under the old net metering arrangement the grid behaved like a bank. Energy exported at midday came back later at a fixed discount, so the timing of generation barely mattered and comparing annual generation against annual consumption was a defensible way to size a system.

Net billing removed that equivalence. Exports are sold at RCEm and imports are bought at retail, and the gap between the two is the entire design problem.

The design consequence is uncomfortable for anyone selling by the kilowatt. Beyond the point where generation meets daytime load, each additional kilowatt earns roughly a fifth of what it would if the household could use it. That does not make additional capacity worthless, but it does mean the marginal kilowatt has to be justified against a much lower value than the first one.

Self-Consumption Is The Lever, And Storage Is How You Pull It

A Polish household without storage typically self-consumes in the region of 30 to 40 percent of generation. With a battery in the 10 kWh class, that rises to roughly 70 to 80 percent.

That is not an incremental improvement. Doubling the self-consumed share roughly doubles the portion of generation earning full retail value instead of RCEm, and it does so without adding a single module.

The arithmetic is worth stating plainly to customers because it inverts an intuition many hold. Adding panels increases generation but most of the increase is exported at low value. Adding storage increases nothing but converts existing generation from low value to high value. Under net billing the second move is frequently worth more than the first, which is the opposite of what was true under net metering.

The design requirement that follows is specific: the tool must dispatch a battery against an hourly load profile and an hourly generation profile simultaneously. Sizing storage from a rule of thumb, or from daily average consumption, will systematically misjudge it, because what matters is the shape of the overlap between generation and demand rather than either total.

Mój Prąd Is Structured To Push The Same Direction

The incentive framework reinforces the economics rather than cutting across them. Support for photovoltaics alone sits around 7,000 PLN, while a combined installation including storage, a heat pump and energy management can reach substantially higher, with storage support of up to around 16,000 PLN within that total.

The policy intent is transparent: raise self-consumption rather than simply add capacity. For a designer this creates a straightforward opportunity. A panels-only design accesses the smaller figure. An integrated design accesses the larger one and also delivers the better underlying economics, so the subsidy and the physics point the same way.

Broadly, and with wide variation by profile, photovoltaics without storage tends to land somewhere in the region of nine to thirteen years for payback, with storage roughly seven to ten, and with subsidy applied closer to five to six. Those figures move with electricity prices and RCEm and should be presented as ranges. The consistent finding is the ordering: configurations that raise self-consumption improve payback despite costing more.

RCEm Volatility And Robust Design

RCEm moved from 132.92 PLN per MWh in April 2026 to 191.37 in May. A swing of that size in the value of exported energy is not a rounding error, and it has a direct design implication.

Any configuration whose case rests on export revenue is exposed to that volatility. Any configuration whose case rests on displaced retail import is not, because retail prices move slowly and predictably by comparison.

The practical rule is to test each candidate design at a low and a high RCEm assumption and to prefer the one whose ranking does not change between them. In most Polish residential cases that preference lands on higher self-consumption, which is a useful convergence: the robust design and the profitable design are the same design.

The Rest Of The Polish Requirement Set

Reduced VAT at 8 percent applies to residential photovoltaic installations, which improves the case relative to standard-rated purchases. Carry it as a configurable input, since commercial work will not necessarily qualify.

Latitude and winter output. Poland runs from roughly 49 to 55 degrees north, so winter generation is a small fraction of summer. This reinforces the self-consumption argument, because winter output almost entirely lands inside the load and is fully valuable, while summer surplus is where the low-value export accumulates.

Shading treatment. Because value now depends on which hours are affected rather than on total loss, shading analysis has to be priced against the net billing spread. Our solar shading analysis software Poland guide covers this in detail.

The Six Platforms Polish Installers Should Evaluate

1. SurgePV, the all-in-one pick

8,760-hour simulation with hourly self-consumption analysis, battery dispatch modelling, net billing and RCEm pricing on both sides of the ledger, AI 3D roof modelling from satellite imagery, and white-label proposals with e-signature in 9 languages, generated from the same design record. $1,299 to $1,899 per user per year.

2. PVsyst

The bankable reference for large ground-mount and commercial work, frequently named by lenders. Strong simulation, no proposal layer, net billing logic applied manually. See our PVsyst alternative review.

3. PV*SOL

Well established in Polish residential and small commercial practice, with good component libraries and capable self-consumption tooling. Desktop-based. Our PV*SOL alternative guide covers the trade-offs.

4. OpenSolar

Free and quick for residential layout and a fast customer document. Weaker on the hourly storage dispatch that now decides Polish sizing. See our OpenSolar alternative comparison.

5. Aurora Solar

Strong residential design built around US net metering, which Poland moved away from in 2022. See our Aurora Solar alternative comparison.

6. Spreadsheets plus a generic yield tool

Still common, and the most likely place a pre-2022 net metering assumption is quietly still in use.

Poland Solar Design Software Comparison

Worked Example: 8 kWp Near Kraków, With And Without Storage

An illustrative calculation showing where the value moves, not a specific customer project. Inputs: 8 kWp array, roughly 8,000 kWh annual generation, household consumption 5,000 kWh, RCEm assumed at 0.19 PLN per kWh.

The second column generates no more energy than the first. It simply moves 3,200 kWh a year from the 0.19 PLN column into the retail column, and that transfer is worth more than the export revenue it gives up several times over.

Note also what happens to the export line. It falls, and that is the design working correctly. An installer optimising for export revenue would prefer the first column, which is exactly the wrong objective under net billing.

Who Should Choose What

• Choose SurgePV if you need hourly self-consumption, battery dispatch and net billing pricing in one tool.
• Choose PVsyst where a lender or offtaker names it on large ground-mount, paired with separate quoting.
• Choose PV*SOL if your team is desktop-based and does detailed residential modelling.
• Avoid annual-totals sizing and any tool assuming net metering. Poland left that mechanism in 2022 and the sizing logic changed with it.

The Bottom Line

Polish design is a self-consumption optimisation wearing the clothes of a generation problem.

• Size to the daytime load curve. Capacity beyond it earns RCEm, which is a fraction of what the household pays to import.
• Simulate storage with the array, not after it. Doubling self-consumption is usually worth more than adding modules.
• Test at two RCEm assumptions. A design justified on export revenue is exposed to a reference price that moved 40 percent in a month.