In progress
Pilot programme
Parhelion and our team on your plant. Free of charge, in exchange for your feedback.
More about the pilot
About us
We win back the output that commercial solar plants quietly lose.
From Praguesoftware and a service for commercial solar plants
The whole chainfrom the first deviation in output to a verified repair
Our own technologythe Parhelion digital twin
Everyone has the data. Almost nobody gets the fix.
Inverters send data every few minutes, year after year. Between the number in the portal and a repaired plant there is a missing step: someone who finds the loss, works out what it costs and makes sure it goes away. That step is us.
Principles
What we hold ourselves to
Three rules we follow when it is not obvious what to do.
Results, not alerts
We measure how much energy has come back into production. An alert that does not lead to a repair is not a result.
Only what we can prove
We don’t promise returns we can’t back up with measurements. We publish Parhelion’s results together with how they were obtained. Validation results
Your data stays yours
We don’t sell it. A service company only gets what it needs for the repair. We don’t replace service companies; we work with them.
“What struck me was how easily energy gets lost when nobody is watching. The plant keeps producing, the invoices keep coming, just a bit smaller. Nothing broke with a bang, so nobody does anything about it.
We are building Sunalytiq so that someone sees that gap and, above all, does something about it. Our yardstick isn’t the number of alerts, but how much energy has come back into production.”
What we’re working on
Published
Solar PV Underperformance 2026
49 pages on how much solar loses, why, and what it costs.
Read the study
For clients
Client portal
Findings, output forecasts and the status of repairs in one place.
Sign inWhere we are based
We are based in Prague and are starting with commercial plants in the Czech Republic, where more than 239,000 installations are ageing in the wake of the 2021–2023 boom.