Key Takeaways
- HelioScope targets C&I rooftop solar; RatedPower targets utility-scale and BESS
- RatedPower automates utility-scale layout, cable routing, and substation design
- HelioScope’s simulation is within 1% of PVsyst for bankable C&I reports
- RatedPower is owned by Enverus and priced for enterprise utility developers
- Neither generates customer proposals, SLDs, or permit packages
- SurgePV covers C&I through utility-scale with proposals and SLDs at $1,499/yr
Quick Verdict
Our Verdict
HelioScope and RatedPower occupy different market segments. HelioScope is the better tool for C&I solar engineers who need fast, web-based design with bankable simulation. RatedPower is the better tool for utility-scale developers and EPCs who need automated layout generation for 10MW+ solar farms with BESS integration. If your team works across both scales and needs proposals and engineering documentation, SurgePV covers more ground at a lower cost.
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)
RatedPower
Founded
2017 (acquired by Enverus 2023)
Headquarters
Madrid, Spain (Enverus HQ: Austin, USA)
Focus
Automated utility-scale solar & BESS design
Best For
Utility developers & large EPCs
Pricing Starts
Enterprise pricing (contact sales)
Feature Comparison
| Feature | HelioScope | RatedPower |
|---|---|---|
| Cloud-Based | ✓ | ✓ |
| Commercial Rooftop Design | ✓ (Core strength) | ✗ |
| Utility-Scale Design | ✗ | ✓ (Core strength) |
| BESS Design | ✗ | ✓ (Integrated) |
| Automated Layout Generation | Basic auto-fill | ✓ (Full automation) |
| Cable Routing | ✗ | ✓ (Automated) |
| Substation Design | ✗ | ✓ |
| Terrain Analysis | ✗ | ✓ |
| Bankable Simulation | ✓ (Within 1% PVsyst) | Energy yield estimation |
| Component Library | ✓ (45,000+) | ✓ |
| Proposal Generation | ✗ | ✗ |
| Single-Line Diagrams (SLD) | ✗ | ✗ |
| Tracker Layout | Limited | ✓ (Single-axis, bifacial) |
| Financial Feasibility | Basic | ✓ (LCOE, IRR analysis) |
| API Access | ✓ | ✓ |
Design & Simulation Capabilities
HelioScope and RatedPower sit at opposite ends of the project scale spectrum. Choosing between them is straightforward: it depends entirely on what you build.
HelioScope Design Strengths
HelioScope excels at commercial rooftop and smaller ground-mount projects. The web-based interface allows engineers to design systems quickly using satellite imagery, configure string layouts, and run simulations within the browser. The simulation engine produces results within 1% of PVsyst, making it accepted for C&I financing and bankability.
The 45,000+ component library and fast workflow make HelioScope the go-to tool for C&I solar teams processing multiple projects per week. Its per-project cost is low, and the learning curve is gentle.
HelioScope reaches its limits at scale. It has no terrain modeling, no cable routing, no substation design, and no BESS integration — all features that utility-scale projects require.
RatedPower Design Strengths
RatedPower (now part of Enverus) was built for utility-scale solar farms and BESS projects. Its flagship product, pvDesign, automates the entire utility-scale design workflow: from terrain analysis and layout generation to cable routing, substation placement, and energy yield estimation.
RatedPower can generate a complete preliminary design for a 50MW+ solar farm in minutes, including tracker layouts, bifacial optimization, and BESS sizing. This automation dramatically reduces the engineering hours needed for large-scale project development.
The platform also includes financial feasibility analysis with LCOE and IRR calculations, making it useful for project developers evaluating sites at the earliest stages.
The limitation is that RatedPower does not handle rooftop solar, residential projects, or smaller C&I systems. It is a utility-scale specialist.
Pricing Comparison
| Plan | HelioScope | RatedPower |
|---|---|---|
| Base Price | $159-259/month | Enterprise (contact sales) |
| Annual Cost | $1,908-$3,108/yr | Custom (typically $10,000+/yr) |
| Target Market | C&I solar teams | Utility developers & large EPCs |
| Additional Software Needed | None (standalone) | PVsyst for bankable simulation |
| Per-Project Limits | Yes (varies by plan) | Plan-dependent |
| Proposals/SLDs Included | ✗ | ✗ |
HelioScope: $1,908/yr for C&I simulation | RatedPower: $10,000+/yr for utility-scale automationLooking for a Better Alternative? Try SurgePV
Design C&I and utility-scale projects in one platform. Built-in simulation, proposals, native SLDs, and permit packages — no add-on tools required.
Start Free TrialNo credit card required · Residential to utility-scale · $1,499/year all-inclusive
Pros & Cons Side-by-Side
HelioScope
Pros
Cons
RatedPower
Pros
Cons
Who Should Choose What?
| Your Situation | Choose HelioScope | Choose RatedPower |
|---|---|---|
| Commercial rooftop projects | ✓ | |
| Utility-scale solar farms (10MW+) | ✓ | |
| BESS projects | ✓ | |
| Bankable C&I simulation | ✓ | |
| Budget under $5,000/year | ✓ | |
| Site screening at utility scale | ✓ | |
| Automated cable routing needed | ✓ | |
| Small C&I team (1-10 people) | ✓ | |
| Need C&I + utility + proposals + SLDs | Choose SurgePV | |
Best Alternative: SurgePV
HelioScope is limited to C&I scale. RatedPower is priced for utility-scale enterprises. Neither generates proposals, SLDs, or permit packages. Teams working across project sizes often need both tools plus additional software.
SurgePV covers the full spectrum in one 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 — no enterprise pricing barriers
For teams that need a solar design platform spanning commercial through utility-scale with complete engineering and sales outputs, SurgePV delivers at a fraction of the combined cost of HelioScope plus RatedPower.
Pro Tip
SurgePV offers a free trial with full feature access. Test it on both a commercial rooftop and a ground-mount project to see the full range. Book a demo for a guided walkthrough.
Frequently Asked Questions
Is HelioScope or RatedPower better for utility-scale solar?
RatedPower is purpose-built for utility-scale solar and BESS projects with automated layout generation, cable routing, and substation design. HelioScope is designed for commercial rooftop and smaller ground-mount systems and lacks utility-scale features.
Does RatedPower support battery storage (BESS)?
Yes. RatedPower includes integrated BESS design capabilities alongside solar, making it one of the few platforms that handles solar+storage at utility scale. HelioScope has only basic battery support.
Which is more affordable?
HelioScope starts at $159/month ($1,908/year). RatedPower uses enterprise pricing (contact sales) targeted at utility-scale developers and EPCs. For C&I teams, HelioScope is significantly cheaper.
Can HelioScope design utility-scale projects?
No. HelioScope is optimized for rooftop and smaller ground-mount commercial systems. It lacks terrain modeling, automated cable routing, substation design, and the scale handling that utility-scale projects require.
Is there a platform that covers C&I and utility-scale?
SurgePV supports residential, commercial (up to 5MW), and utility-scale projects in one cloud platform at $1,499/year. It includes built-in simulation, proposals, and native SLDs that neither HelioScope nor RatedPower offer.
Does RatedPower include simulation?
RatedPower includes energy yield estimation as part of its automated design workflow, but many EPCs still validate results with PVsyst for bankability. HelioScope’s simulation is within 1% of PVsyst and is accepted for C&I bankability.