PVsyst Solar Energy Planning
Lion Solar deliver advanced PVSyst modelling for utility-scale projects across international markets, integrating site-specific meteorological data and loss assumptions aligned with regional compliance standards.
Good solar planning is more than placing panels on a roof. With PVsyst, we look at the technical performance, site conditions, and financial outcomes together, so the system performs on site the way it was planned on paper.
At Lion Solar Solutions, we deliver bankable PVsyst simulations that help investors, EPC contractors, and engineering teams make confident decisions before construction begins reducing uncertainty when it matters most.
What PVsyst adds to your solar project
From energy yield analysis and loss optimization to PV module cabling, battery storage scenarios, and construction-ready planning, we provide end-to-end system engineering. Our focus isn’t just on designing a solar array, but on delivering a system that fits your roof or site, passes approvals smoothly, and achieves the return you expect.
Before you commit, request a free PVsyst test project to review our simulation quality, assumptions, and reporting approach with no obligation.
Energy yield prediction and ROI (P50 and P90):
We create location-specific simulations for every project so you can size the system with confidence.
What P50 and P90 mean
- P50 is the expected average production.
- P90 is a conservative, bankable estimate used in financing.
These outputs help investors and lenders evaluate the return on investment with realistic assumptions.
Climate data and shading analysis
- High accuracy starts with high-quality inputs. We use trusted sources and site evidence to reflect how your array will perform.
- SolarGIS, PVGIS , Solcast climate data
- Horizon profiles to capture surrounding far obstacles
- Shading analysis that quantifies output loss
- Module and inverter selection optimized for local conditions
System losses and PV module cabling design
Generation is only half the story. Inner system losses decide what reaches the meter.
What we model
DC and AC cable losses with length, current and temperature effects
Inverter, transformer and connection losses
Stringing, protection devices and selectivity that reduce avoidable losses
Battery storage scenarios
When requested, we simulate battery storage inside to show its real value on your site.
What the plan includes:
- System selection by roof type and load-bearing capacity
- Wind and snow load calculations per Eurocode standards
- Platform support for K2 Base, Enstall, Schletter and SFlex
- Precise rail, clamp and accessory schedules
- Bill of materials, CAD exports and complete technical documentation
You can also see how we handle pvsol projects in more detail: Pvsyst Projects
Inputs and outputs
Inputs we need:
- Site address or coordinates, array size target, roof or ground type, module and inverter make, tariff information and optional load profile data.
Outputs you get:
- P50 and P90 reports, loss diagram and efficiency summary, optional battery storage scenarios with financial impact, CAD and PDF documentation ready for proposals and permitting.
Why Lion Solar Solutions
ROI is not a single number. It is the result of a defined engineering process. We combine , local compliance knowledge and a performance mindset to deliver designs that stand up to technical review and perform in operation.
Ready to plan your solar energy project
Our engineering workflows are designed to support solar projects across Europe,
the Middle East and international markets, enabling seamless collaboration with
EPCs in different regulatory environments.
Start with accurate production projections, tailored battery scenarios and a buildable construction plan. Schedule a private consultation with Lion Solar Solutions and bring technical confidence to day one.
Frequently Asked Questions
P50 and P90 are probability metrics used to predict annual energy yield. P50 represents a 50% probability that the system will exceed its predicted production, while P90 is a more conservative estimate (90% probability), often required by banks and investors to ensure debt coverage even in poor weather years.Verify Your ROI: Don’t base your financial model on a guess. Request a Free Test Project and let us provide you with a detailed P50/P90 analysis to secure your investment.
While HelioScope is excellent for fast, preliminary layouts, PVsyst is the industry standard for large-scale or complex commercial projects requiring deep shading analysis and financial bankability. Most Tier-1 investors and lenders specifically require PVsyst reports for final approval.
Professional Choice: Moving from a preliminary sketch to a bankable report? We can transform your concept into a high-fidelity PVsyst model. Ask for a Free Test Project to see the difference.
When designing a precise solar PV system, we typically need a few key pieces of information: the geographical coordinates of the installation site, the site layout or relevant CAD drawings, details regarding potential shading from trees, buildings, or adjacent structures, the selected models of PV modules and inverters, and any particular project constraints like the maximum allowable DC capacity or the limits of available space on the site.
Yes. We can integrate drone imagery or 3D models into PVSyst to create an accurate site representation, ensuring precise shading and energy yield calculations.
In the UK’s solar industry, PVSyst is well known for giving reliable predictions when it has accurate, UK-specific data to work with. On average, the results can vary by about ±5–10%, depending on factors like the quality of local data, changes in the weather, and the complexity of shading around the site.
Yes. PVSyst supports bifacial solar module simulation, accounting for rear-side irradiance, ground albedo, and installation geometry.
We can model battery energy storage system in PVSyst to evaluate self consumption, backup capability, and load shifting, along with financial analysis if required.
Yes. In addition to the technical energy yield report, we can provide a financial analysis covering payback period, IRR, and LCOE, based on your electricity tariffs and incentives.
Yes. PVSyst can simulate both fixed-tilt and tracking systems (single-axis or seasonal tilt), optimizing for energy yield.
You will receive a detailed PVSyst report including system layout, energy yield estimates, shading analysis, loss diagrams, and (if requested) financial performance metrics.
PVSyst simulations can provide P50, P90 and P75 evaluations, which offer insights into the probability of annual energy production.
The P50 value represents the annual energy yield with a 50% probability of exceedance, while the P90 indicates a 90% probability of exceedance.3
Yes, revisions are typically included.0
For the pricing information, please visit the page.
Yes, a free test for PVSyst design is offered.
Yes, hourly PV generation data can be provided in Excel format.
Yes, as long as it is in excel format. It can be imported and used in the simulation.
Yes, we are able to simulate Off-Grid systems.
These values represent the probability of energy production. P50 is the best estimate, meaning there is a 50% chance the actual yield will exceed this figure. P90 is a conservative estimate (90% chance of being exceeded), which banks and lenders typically require to assess downside risk and secure financing.