Most deep retrofits die in the feasibility stage, and they die for the same reason: the energy savings alone don't carry the capital cost. Ontoly builds a second stack of capital on top of your savings, so the projects you already want to do can move further and faster.
You have run the numbers. Maybe more than once. The heat pumps, the envelope work, the controls upgrade, the DHW replacement — the engineering is sound, the emissions reduction is real, and the payback still lands somewhere on the far side of the useful life of the asset. So the project sits, the building keeps burning gas, and next year the numbers look the same except the equipment is a year older.
This is the most common outcome in building decarbonization, and it is not a modelling error. Operational savings were never designed to finance a fuel switch. In a lot of markets, cheap gas and expensive electricity mean a well-executed retrofit can cut emissions dramatically while barely moving the operating line. That is exactly the gap Ontoly exists to fill.
When you remove fossil fuel combustion from a building, you create a measurable, permanent emissions reduction. That reduction has value to buyers in the carbon market — but only if someone can prove it happened, at your building, in your meter data, and not in a spreadsheet estimate.
That proof is what Ontoly does. We are a carbon credit registry and certification body purpose-built for the buildings sector. We certify Building Emissions Reduction Units (BERUs) under the Building Emissions Reduction Standard (BERS), using measured pre- and post-retrofit performance data aligned with ASHRAE Guideline 14 Option C and IPMVP. Not modelled savings. Not a deemed value from a lookup table. Your actual utility data, before and after.
Because the reductions are measured rather than estimated, they hold up to buyer diligence, and they command a price that reflects that. In the projects we have assessed, carbon revenue has covered a meaningful share of capital cost — up to roughly 40% in some cases — which is often precisely the difference between a project that clears the investment committee and one that doesn't.
Create a supplier account on the Ontoly Portal and list your project. Listing is free. Fill out the short eligibility form on the portal — it takes a few minutes and asks for the basics about the building, the fuel it burns today, and the measure you intend to install. Listing early matters: buyers browse listed projects and can express interest in reserving credits before a shovel is in the ground.
Submit your forms and request a Preliminary Assessment Report (PAR) from us. The PAR turns "this might be worth something" into a number you can put in a pro forma. We take your independent engineer's performance forecast as a fixed input, run it through the Ontoly GHG quantification model, and return a projected annual credit volume, a crediting period, and a financial additionality assessment. That report is what you take to your board, your lender, or a pre-purchase buyer.
Do the work you were always going to do. Once the retrofit is complete, the only ongoing obligation is data: upload your annual utility bills through the portal. Meter integrity and monthly data review sit with you as the building representative, because the whole system rests on real consumption data. Everything downstream of that upload is ours.
We re-run the full quantification on your measured data — the original forecast is never carried forward into issuance — and take the project through third-party verification. We complete the final calculations and the paperwork on your behalf, and we pay the verification body costs. If the building performed, credits are issued to your account in the portal, in your name, traceable to your building.
Access buyers directly through the Ontoly Portal. There are two pathways and you can use both: reservation, where a buyer signs a pre-purchase contract for credits from a project that hasn't been verified yet, so capital arrives early, when the project needs it; and spot sale, where verified, issued credits are sold on delivery. You can sell all of the credits, a fraction of them, or a select number of vintage years and retain the rest.
