Simple enough to sell. Fast enough to win.
One design and proposal for every energy trade on the project. Cost, ROI and one client deliverable, built in minutes.
In development
The problem
Proposing a multi trade project should not take five tools.
Today every trade on an energy project has its own software, its own designer and its own estimate. Pulling them into one offer is slow, and it is too complex for one salesperson to explain alone.
One model
Every trade designs on the same model.
Enter an address and Evoa builds the site and building model from existing public data. Your own team and the partner firms you bring in all design on it, so nobody is working from a different set of numbers.
Change control
Change one trade and the affected trades update.
Every affected trade updates, with a record of who changed what and a notification to every subcontractor. No rekeying, no version confusion, no phone calls to find out which number is current.
The deliverable
One proposal, the total cost and the ROI.
One client deliverable with every trade in it, priced as a whole, with the total cost and the return the owner is buying. Ready to send from the same project.
How it works.
- 1
Enter an address.
Evoa builds a site and building model from existing public data.
- 2
Every trade designs on the same model.
Whether the team is in house or a partner firm.
- 3
Change one trade and the affected trades update.
Every affected trade updates, with a record of who changed what and a notification to every subcontractor.
- 4
Send one proposal.
One proposal with every trade, the total cost and the ROI.
Who it is for
Built for energy and utility general contractors.
For the GCs who sell and build multi trade energy projects, and the partner firms they bring in for envelope, HVAC, solar, geothermal, electrical and plumbing.
See how the systems work.
See all explainers
The chain reaction: how one change ripples through every trade
On a real project the trades depend on each other, so one design change resizes everything after it.
How solar works on a project
How sunlight becomes usable electricity on a real job, and what decides the size of an array.
How a heat pump heats and cools a home
A heat pump moves heat instead of making it, pulling heat from outdoor air in winter and pushing it outside in summer.
Grow your business, not your overhead.
Join the early access list and we will walk your team through Evoa Systems as it is built.
Evoa Systems is in development
LAUNCHING NOVEMBER 2, 2026
One design app. Free, forever.Launching November 2.
On November 2, EVOA Systems opens the platform. Every contractor can use one design app free, forever, with unlimited users. When you are ready for every trade in one proposal, upgrade anytime.