Accelo vs OpenSolar: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Accelo and OpenSolar side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, OpenSolar leads on a free plan. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Accelo
The complete quote-to-cash platform to power professional services operations.
Best for you if:
- • You want consolidates multiple business functions into one platform, reducing tool sprawl
OpenSolar
Accelerating solar adoption globally with free software for design, sales, and project management.
Best for you if:
- • You want a fully free tool (Accelo requires payment)
| At a Glance | Accelo | OpenSolar |
|---|---|---|
Starts at | Not published | Free 100% free |
Category | Project Management Productivity | Project Management Proposal Software |
Rating | 4.4/5 G2 4.3 · Capterra 4.5 863 reviews | n/a |
Free plan | No | Yes |
Watch out for | Minimum 3 users for BetaCore | n/a |
Choose Accelo or OpenSolar?
Choose Accelo if
- You want consolidates multiple business functions into one platform, reducing tool sprawl
- You want provides real-time visibility into project profitability, resource utilization, and client relationships
Choose OpenSolar if
- You want a fully free tool (Accelo requires payment)
- You want core software is free of charge for solar professionals
- You want comprehensive end-to-end solution for the entire solar workflow
In-Depth Analysis
Accelo
The complete quote-to-cash platform to power professional services operations.
The 'BetaCore' tier has a minimum of 3 users, suggesting a higher entry cost for small teams.
Watch out
Minimum 3 users for BetaCore
Strengths
- Pro: Consolidates multiple business functions into one platform, reducing tool sprawl.
- Pro: Provides real-time visibility into project profitability, resource utilization, and client relationships.
- Pro: Automates administrative tasks, leading to significant time savings and increased productivity.
- Pro: Supports data-driven decision-making with comprehensive reporting and analytics.
- Pro: Flexible plans that can scale with business growth and varying operational models.
Weaknesses
- Con: Requires a minimum of 3 users, which might not be suitable for very small teams or individual consultants.
- Con: Pricing is not transparently listed and requires a custom quote, which can be a barrier for initial evaluation.
Key features
OpenSolar
Accelerating solar adoption globally with free software for design, sales, and project management.
OpenSolar's pricing is incredibly generous, offering a fully-featured platform for free.
Strengths
- Pro: Core software is free of charge for solar professionals.
- Pro: Comprehensive end-to-end solution for the entire solar workflow.
- Pro: Regular product updates introduce new features and improvements.
- Pro: Supports integration with third-party tools and financial services.
- Pro: Aims to increase profitability and efficiency for solar businesses.
Weaknesses
- Con: API access and app connectors will incur charges starting April 2026.
- Con: Some advanced features or integrations may be region-specific (e.g., UK Finance Marketplace).
Key features
Plans and prices: Accelo vs OpenSolar
| Tool | Plans and prices | Source |
|---|---|---|
| Accelo |
| accelo.com/pricing read Oct 1, 2026 |
| OpenSolar |
| opensolar.com/pro read Oct 8, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Accelo pricing and OpenSolar pricing.
Key Takeaways
Accelo
- Choose if you want the complete quote-to-cash platform to power professional services operations
OpenSolar
- Has a free plan
What the data shows
On the data below, OpenSolar leads on a free plan. We do not name an overall winner for this pair.
- Only Accelo has a published user rating (4.4/5 from 863 reviews); OpenSolar has none we can show.
- Only OpenSolar has a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Accelo and OpenSolar compare in 2026?
On the data below, OpenSolar leads on a free plan. We do not name an overall winner for this pair. Only Accelo has a published user rating (4.4/5 from 863 reviews); OpenSolar has none we can show. Only OpenSolar has a free plan.
What are Accelo and OpenSolar used for?
Accelo: The complete quote-to-cash platform to power professional services operations. OpenSolar: Accelerating solar adoption globally with free software for design, sales, and project management.
What does Accelo cost vs OpenSolar?
Accelo has no public paid-plan price on file. OpenSolar is free. Prices read on the vendors' pricing pages, latest check Oct 8, 2026.
What's the main difference between Accelo and OpenSolar?
Accelo's main strength: consolidates multiple business functions into one platform, reducing tool sprawl. OpenSolar's main strength: core software is free of charge for solar professionals.