Compare the top 5 solar design software platforms for Romania’s growing market in 2026. Prosumer net-billing, Casa Verde subsidies, EPS grid compliance, and automated electrical design for Romanian solar installers.
Romania’s solar market is surging. 5.5 GW installed. 2-3 GW added every year. On track for 10+ GW by 2030 (SolarPower Europe).
But here is the problem. Most solar design tools were not built for Romania. Prosumer net billing under Law 184/2018. Casa Verde Fotovoltaice subsidy calculations. DSO connection documentation for E-Distributie, DEER, and Delgaz Grid. These are not edge cases – they are every single project. And software built for the US or Western Europe trips up on all of them.
The wrong tool costs you hours per project in workarounds. The right one handles prosumer economics, IEC/CENELEC-compliant electrical SLDs, and bankable simulations natively – without a single manual export.
We tested and compared the top 5 solar design platforms for the Romanian market. Prosumer compliance, design speed, simulation accuracy, electrical engineering depth, and total cost of ownership – every factor that actually matters for Romanian projects.
Best For: Romanian EPCs and commercial solar installers needing integrated design-to-proposal workflows with electrical engineering
Pricing: $1,499/user/year (~EUR 1,399) – all features included
Ease of Use: 2-3 week onboarding
Overall Score: 95/100
SurgePV is the only platform that combines AI-powered design, automated electrical engineering, bankable simulations, and professional proposal generation in a single cloud-based workflow. For Romanian EPCs and installers, that means one tool instead of three or four.
Prosumer net billing modeling. SurgePV handles self-consumption economics under Law 184/2018, calculating grid injection credits at reference price and showing battery storage impact on prosumer ROI. For Casa Verde Fotovoltaice projects, the platform includes incentive calculators that show pre- and post-subsidy payback periods.
Automated SLD generation. This is SurgePV’s biggest differentiator. The platform generates permit-ready single line diagrams in 5-10 minutes – compared to 2-3 hours of manual drafting in AutoCAD. None of the other four tools on this list offer automated SLD generation.
Romanian DSOs (E-Distributie, DEER, Delgaz Grid) require electrical documentation for connection approval. Without automated SLDs, your team is exporting designs to AutoCAD and manually drafting schematics for every project.
Bankable P50/P90 simulations. SurgePV’s 8760-hour shading analysis delivers bankability-grade accuracy within +/-3% of PVsyst. For commercial and utility-scale projects requiring Romanian bank approval, that means bankable reports without a separate simulation tool.
You might be wondering: if SurgePV does all this, why haven’t I heard of it? Fair question. PVsyst has had a 30-year head start. Aurora Solar has spent hundreds of millions on marketing. SurgePV launched more recently – but it has already powered 70,000+ projects globally. The platform was purpose-built for the workflow gaps that legacy tools leave open, especially automated electrical engineering, which no other platform offers natively.
Romanian EPCs and commercial solar installers needing integrated design-to-proposal workflows with electrical engineering. Also strong for residential solar prosumer projects. Teams handling 10+ projects per month will see the fastest ROI.
Teams deeply committed to PVsyst desktop workflow who don’t need proposals or SLD generation. Budget-zero installers doing fewer than 5 projects per month (consider OpenSolar instead).
Best For: Large Romanian residential installers with enterprise budgets
Pricing: ~$3,108+/year per user (plus AutoCAD for electrical: $2,000/yr)
Ease of Use: 4-6 week learning curve for commercial
Overall Score: 78/100
Aurora Solar is the most recognized solar design platform globally. It delivers excellent AI roof modeling, attractive proposals, and strong CRM integrations. Aurora’s AI roof detection is industry-leading, and the proposal output is polished and professional.
Large Romanian residential enterprises with separate engineering departments and enterprise budgets.
Romanian EPCs needing IEC-compliant electrical documentation or P50/P90 bankability for lender presentations. Price-sensitive teams.
Best For: Utility-scale developers needing bankable simulation for Romanian financiers
Pricing: ~CHF 1,100 + CHF 350/yr (~EUR 1,500 total first year)
Ease of Use: 4-6 week learning curve
Overall Score: 72/100
PVsyst is the gold standard for solar energy simulation. Romanian banks and international lenders almost universally accept PVsyst reports for project financing. No other tool matches PVsyst for simulation depth and detailed loss analysis.
Romanian utility-scale developers needing bankable P50/P90 reports for lender presentations. Best used alongside a design platform like SurgePV.
Teams needing daily design workflow, proposals, or electrical documentation. Residential installers (overkill for prosumer projects).
Best For: Romanian commercial EPCs needing fast commercial roof layouts
Pricing: ~$2,640+/year per user
Ease of Use: 2-3 week learning curve
Overall Score: 68/100
HelioScope is a cloud-based commercial solar design tool now owned by Aurora Solar. It focuses on fast layout design for flat commercial rooftops and ground-mount arrays.
Romanian commercial EPCs already on the Aurora platform who need faster commercial roof layouts.
Best For: Small Romanian residential installers with minimal budgets
Pricing: Free
Ease of Use: 1-2 week learning curve
Overall Score: 60/100
OpenSolar is a free solar design and proposal platform. For small Romanian installers handling a few prosumer projects per month, it provides basic functionality at zero cost.
Small Romanian residential installers handling fewer than 10 prosumer projects per month with minimal technical requirements.
Romania isn’t Germany. It isn’t Spain. The Romanian solar market has specific requirements that most global platforms handle poorly. Here’s what actually matters when choosing design software for Romanian projects.
Romania’s prosumer legislation (Law 184/2018, updated 2023) defines how residential producers up to 400 kW sell excess electricity back to the grid through net billing. Your design software needs to model self-consumption vs grid injection at ANRE-regulated reference prices, battery storage impact on prosumer economics, day vs night tariff differences, and seasonal production variation.
Commercial and utility-scale projects require bankable energy yield reports. Romanian banks require P50/P90 production estimates, detailed loss analysis, and weather data from recognized databases (PVGIS, Meteonorm) covering Romanian regions with GHI ranging from 1,300-1,600 kWh/m2/year.
Romanian electrical standards follow IEC/CENELEC frameworks. For DSO connection approval, projects require single line diagrams, wire sizing calculations, protection device specifications, and grid connection documentation for the aviz tehnic de racordare (ATR). SurgePV is the only platform that generates these documents automatically.
The Casa Verde Fotovoltaice program provides up to RON 20,000 (~EUR 4,000) for residential solar installations. Your software should show pre-subsidy vs post-subsidy payback in customer-facing proposals.
Choose your solar design software based on your business model, project types, and workflow priorities:
Still unsure? Consider these decision factors:
Not every solar project in Romania requires a full-featured design platform. Here are scenarios where simpler tools might suffice:
If you’re handling fewer than 10 residential installations per month with straightforward roof layouts, free tools like OpenSolar or basic spreadsheet calculations may meet your needs. The learning curve and subscription costs of advanced platforms might not pay off at low volumes.
If you outsource electrical engineering to third-party firms that handle SLD generation, equipment sizing, and technical documentation, you may only need basic design and proposal tools. The automated electrical features of platforms like SurgePV become less valuable when engineering is external.
Large, unshaded ground-mount installations on flat terrain with minimal design complexity can often be sized using basic calculations. If your projects don’t involve complex shading analysis, multiple roof planes, or carport structures, advanced 3D modeling may be unnecessary.
If your team is deeply proficient in AutoCAD or other CAD platforms and has efficient manual workflows for electrical documentation, transitioning to automated SLD generation may not provide immediate ROI. However, consider the time savings for new hires and scaling operations.
The Romanian solar market is not slowing down. With 2-3 GW being added annually and prosumer demand accelerating, the EPCs and installers winning projects today are the ones delivering accurate designs and bankable reports faster than their competition. Your software choice is not a back-office decision – it is a competitive advantage that determines how many projects your team can handle and how quickly you close deals.
Our evaluation methodology for Romanian solar design software:
Evaluation weights: Prosumer and self-consumption modeling (30%), bankability and simulation accuracy (25%), design speed (20%), electrical engineering and compliance (15%), pricing and value (10%).
SurgePV is the best all-in-one solar design software for Romania in 2026. It combines 3D design, bankable P50/P90 simulations, automated SLD generation, and professional proposals with prosumer self-consumption modeling at $1,499/user/year. For simulation-only needs, PVsyst remains the gold standard for bankable reports accepted by Romanian banks and international lenders.
SurgePV models prosumer self-consumption economics per Law 184/2018, including net billing calculations, grid injection at ANRE-regulated reference price, and battery storage optimization for Romanian prosumer installations. Aurora Solar and OpenSolar do not natively support Romanian prosumer calculations.
Romanian installers use SurgePV, PVsyst, Aurora Solar, and OpenSolar. Utility-scale EPCs rely on PVsyst for bankable simulations. Growing residential and commercial installers adopt SurgePV for integrated design-to-proposal workflows that handle prosumer economics natively.
SurgePV includes incentive calculators that factor Casa Verde Fotovoltaice subsidy amounts (up to RON 20,000/~EUR 4,000) into customer proposals, showing pre- and post-subsidy payback periods for eligible residential installations.
Romanian banks accept bankable P50/P90 simulation reports from PVsyst (universally accepted) and SurgePV for commercial and utility-scale project financing. Aurora Solar provides P50 only, which may not meet lender requirements for larger projects.
Costs range from free (OpenSolar) to EUR 6,000+/year (Aurora with AutoCAD). SurgePV costs $1,499/user/year with all features included. PVsyst costs approximately EUR 1,150 plus EUR 350/year for updates (simulation only, no design or proposals). Use our solar ROI calculator to estimate savings.
The best solar design software uses PVGIS and Meteonorm databases for Romania, providing GHI data from 1,300 kWh/m2/year in Transylvania to 1,600 kWh/m2/year in Dobrogea and southern Wallachia. Accurate regional data is critical for bankable simulations.
OpenSolar is the best free option for Romanian installers, offering basic design and proposals. However, it lacks bankable simulations, SLD generation, and prosumer-specific financial modeling available in SurgePV. For teams handling more than 10 projects per month, the investment in SurgePV typically pays for itself within the first month.
Disclaimer: Product names, logos, and brands mentioned in this article are property of their respective owners. All company, product, and service names used are for identification purposes only. Use of these names does not imply endorsement. Pricing and features are based on publicly available information as of the publication date and may change without notice.
