A site with several systems
Ground frames in the garden, the garage's flat roof and the house's pitched roof in one project. Each system has its own mounting, panel and colour.
New: 3D on the map with shade from trees and buildings
A solar plant, designed in an evening
Solispec picks the mounting for your roof or plot, checks it against wind and snow, draws the parts and prices everything down to the last bolt.
Your first project is free, no card needed.
Features
Everything for the plant in one window
Change a parameter and the drawings, checks, cutting list and estimate update at once.
Checks in plain words
Wind, snow, ballast, profile strength and roof attachments — each with a ready fix.
3D with the sun's path
Shade from trees and neighbouring buildings from OpenStreetMap on any day of the year.
Generation and payback
How many kWh the plant makes a year and how many years it takes to pay back.
Commercial proposalSoon
With your logo and prices, as a PDF and a link for the client.
Electrics without surprises
Strings on MPPT inputs, with voltage checked for frost and heat.
Step-by-step assembly
An assembly checklist with tightening torques — handy on a phone on site.
Drawings, cutting, catalogues
Side view, plan, profile cutting with minimal offcuts and a fasteners list. Catalogues: 98 panels, 100 inverters, 50 batteries.
How it works
Four steps from an address to the estimate
- 01
Place
Find your house on the map. The snow and wind region is filled in for you.
- 02
Structure
Choose where the panels go. The wizard suggests the tilt and the number of rows.
- 03
Checks
Anything that will not hold shows at once, together with a way to fix it.
- 04
Drawings and estimate
Print the sheets, the parts list and the estimate for yourself, a client or an installer.
Honest about the maths
What the calculations rest on
Codes
Ukraine — DBN V.1.2-2:2006 and the Eurocode; Poland — a PN-EN pack is in progress; other countries — the Eurocode with snow and wind you enter yourself.
Reproducible results
Every saved version of a project has its calc_id: the same result in the browser and on the server.
An engineer checks
The calculation is preliminary. A qualified engineer must check it before installation.
Manufacturers' data
Panels, inverters and batteries come from the manufacturers' datasheets; prices are your own.
Understand what you are buying before you talk to an installer
- A 5-step wizard and explanations without jargon
- An estimate with your prices and the payback
- Do-it-yourself assembly with a step-by-step checklist
From the site visit to the estimate in 20 minutes
- Sites of up to 20 systems, strings on MPPT
- Projects, clients and versions in your account
- A team with roles — on the Business plan
Pricing
Safety is free. Always.
Wind, snow and ballast checks are in every plan. You pay only for what earns money.
Start
For an owner working out a plant for themselves
€0
Pro
For an installer or designer who sells plants
€29/ month
Business
For a team: roles, shared projects, an engineer review queue
€84/ month
Questions
Can I use it for free?
Yes. Start is free forever: one project with one system and every safety check. The calculators work without an account.
Which countries are the calculations for?
Full codes are for Ukraine (DBN); Poland is next. For other countries — the Eurocode with the snow and wind loads you enter by hand.
Who is responsible for the result?
Solispec gives a preliminary calculation. The user is the responsible designer; a qualified engineer must check it before installation.
Where is my data stored?
On servers in the EU. A guest project stays in your browser until you move it into your account.
How do I pay?
By card — a monthly Stripe subscription that renews automatically. In crypto — a monthly payment through Heleket: a new invoice arrives every month. You can cancel at any time.
Your roof is ready. Are you?
The first project is free and needs no account.