Key Takeaways
- HelioScope is web-based; PV*SOL is a Windows-only desktop application
- PV*SOL offers deeper simulation with battery, EV charger, and heat pump modeling
- HelioScope costs $1,908+/year; PV*SOL is ≈$1,410 one-time (perpetual license)
- Neither tool generates customer proposals or sales documents
- Neither tool includes native SLD generation or permit packages
- SurgePV combines cloud access, simulation, proposals, and SLDs at $1,499/year
Quick Verdict
Our Verdict
HelioScope and PV*SOL are both strong simulation tools with fundamentally different delivery models. HelioScope is the better choice for teams that need web-based collaboration and fast commercial layouts. PV*SOL is better for engineers who want desktop-grade 3D simulation with battery and heat pump modeling at a one-time cost. If you need simulation plus proposals plus engineering documentation in one cloud platform, SurgePV covers all three.
Company Overview
HelioScope
Founded
2013 (Folsom Labs)
Headquarters
San Francisco, USA
Focus
Web-based C&I solar design & simulation
Best For
Commercial & industrial projects
Pricing Starts
$159/month ($1,908/yr)
PV*SOL
Founded
1998 (Valentin Software)
Headquarters
Berlin, Germany
Focus
Desktop 3D simulation with storage & heat pump
Best For
European residential & commercial engineers
Pricing Starts
≈$1,410 one-time (perpetual license)
Feature Comparison
Here’s how HelioScope and PV*SOL compare across core capabilities for solar design and simulation teams.
| Feature | HelioScope | PV*SOL |
|---|---|---|
| Cloud-Based | ✓ | ✗ (Desktop only) |
| Operating System | Any (browser) | Windows only |
| 3D Simulation | 2.5D shading model | ✓ (Full 3D, minute-by-minute) |
| Bankable Simulation | ✓ (Within 1% PVsyst) | ✓ (Industry standard) |
| Battery Storage Modeling | Limited | ✓ (Detailed) |
| EV Charger Simulation | ✗ | ✓ |
| Heat Pump Simulation | ✗ | ✓ |
| Component Library | ✓ (45,000+) | ✓ (Extensive) |
| Proposal Generation | ✗ | ✗ |
| Single-Line Diagrams (SLD) | ✗ | ✗ |
| Shade Analysis | ✓ (Irradiance model) | ✓ (3D ray-tracing) |
| Team Collaboration | ✓ (Cloud sharing) | ✗ (Single user per license) |
| API Access | ✓ | ✗ |
| Financial Modeling | Basic | ✓ (EU tariff structures) |
| Commercial Design Focus | ✓ (Core strength) | ✓ |
| Residential Design | Limited | ✓ |
Design & Simulation Capabilities
HelioScope and PV*SOL both produce accurate simulation results, but they differ fundamentally in delivery model and simulation depth.
HelioScope Design Strengths
HelioScope’s biggest advantage is accessibility. As a web-based platform, it works on any device with a browser — no installation, no Windows requirement, no local hardware limitations. Teams can collaborate on projects in real time, and updates deploy automatically.
For commercial project workflows, HelioScope excels at fast layout generation. You can design a 500kW rooftop array, configure string sizing, and run a simulation in under an hour. The simulation engine produces results within 1% of PVsyst, making outputs suitable for investor-grade reports.
The limitation is simulation depth. HelioScope uses a 2.5D shading model rather than full 3D ray-tracing, and it lacks support for battery storage, EV chargers, and heat pumps.
PV*SOL Design Strengths
PV*SOL takes the opposite approach with a desktop-based 3D simulation engine that provides minute-by-minute resolution. Developed in Germany by Valentin Software since 1998, PV*SOL has been the standard tool for European solar engineers for over two decades.
The platform’s standout capability is its integrated energy system modeling. PV*SOL simulates not just solar panels but entire energy ecosystems: battery storage, EV chargers, and heat pumps interact within a single simulation model. For residential projects in Europe where heat pump integration and self-consumption optimization are standard requirements, PV*SOL offers depth that HelioScope cannot match.
The trade-off is workflow friction. PV*SOL requires Windows, runs locally on a single machine, and lacks cloud collaboration features. Sharing projects between team members means exchanging files rather than sharing links.
Pricing Comparison
| Plan | HelioScope | PV*SOL |
|---|---|---|
| License Model | Monthly subscription | One-time perpetual license |
| Entry Price | $159/month ($1,908/yr) | ≈$1,410 one-time |
| Premium | $259/month ($3,108/yr) | ≈$1,995 (premium edition) |
| Year 1 Cost | $1,908-$3,108 | ≈$1,410 |
| Year 3 Cost | $5,724-$9,324 | ≈$1,410 (+ optional updates) |
| Per-User Licensing | Per-seat subscription | Per-machine license |
HelioScope: $5,724+ (subscription) vs PV*SOL: ≈$1,410 (one-time) — PV*SOL saves 75% over 3 yearsLooking for a Better Alternative? Try SurgePV
Cloud-based like HelioScope, with simulation depth approaching PV*SOL — plus proposals, native SLDs, and permit packages in one platform.
Start Free TrialNo credit card required · Works on any OS · $1,499/year all-inclusive
Pros & Cons Side-by-Side
HelioScope
Pros
Cons
PV*SOL
Pros
Cons
Who Should Choose What?
| Your Situation | Choose HelioScope | Choose PV*SOL |
|---|---|---|
| Fast commercial layout workflow | ✓ | |
| Team collaboration needed | ✓ | |
| Battery + heat pump simulation | ✓ | |
| European market with feed-in tariffs | ✓ | |
| Mac or Linux user | ✓ | |
| Want to avoid recurring costs | ✓ | |
| Detailed 3D ray-tracing shading | ✓ | |
| API integration with other tools | ✓ | |
| Need simulation + proposals + SLDs | Choose SurgePV | |
Best Alternative: SurgePV
Both HelioScope and PV*SOL are simulation-only tools. Neither generates proposals, SLDs, or permit packages. Teams using either tool need additional software to complete their workflow.
SurgePV bridges this gap with a single cloud platform:
- Design: AI-powered auto-design for residential, commercial, and utility-scale projects up to 5MW
- Simulation: 8760-hour energy yield simulation with P50/P75/P90 confidence levels
- Proposals: Web and PDF proposals with multi-currency financial modeling (cash, loan, lease, PPA)
- Engineering: Native SLD generation, three-line diagrams, wire sizing, and permit packages
- Pricing: $1,499/year with all features included — cloud-based, works on any OS
For teams that want HelioScope’s web accessibility combined with PV*SOL’s engineering depth, SurgePV delivers both in one subscription without the desktop limitations or recurring per-project fees.
Pro Tip
SurgePV offers a free trial with full feature access. Compare simulation results against PV*SOL or HelioScope on the same project. Book a demo to see the complete workflow.
Frequently Asked Questions
Is HelioScope more accurate than PV*SOL?
Both are highly accurate. HelioScope produces results within 1% of PVsyst for commercial systems. PV*SOL uses detailed 3D simulation with minute-by-minute resolution and supports battery, EV charger, and heat pump modeling that HelioScope lacks.
Is PV*SOL worth the one-time price?
At roughly $1,410 for a perpetual license, PV*SOL pays for itself within the first year compared to HelioScope’s $1,908+/year subscription. However, PV*SOL is desktop-only and requires Windows, which limits team collaboration.
Can PV*SOL replace HelioScope for commercial projects?
PV*SOL handles commercial projects well with its 3D simulation engine. However, it lacks HelioScope’s web-based collaboration and fast commercial layout tools. For large C&I portfolios, HelioScope’s browser-based workflow is more efficient.
Does PV*SOL work on Mac?
No. PV*SOL is a Windows-only desktop application. Mac users need a Windows VM or Boot Camp. HelioScope and SurgePV are both cloud-based and work on any operating system with a browser.
Which is better for battery storage design?
PV*SOL is significantly better for storage. It models battery systems, EV chargers, and heat pumps with detailed minute-by-minute simulation. HelioScope has only basic battery support.
Is there an alternative that combines web-based access with PV*SOL’s depth?
SurgePV is cloud-based like HelioScope but includes detailed simulation, native SLDs, proposals, and global financial modeling at $1,499/year. It bridges the gap between HelioScope’s accessibility and PV*SOL’s engineering depth.