Energy Conservation & Efficiency

5 makers · live now

Built-world community · climate & equity

The efficiency work gets paid for. It should get remembered.

Every Mass Save retrofit is documented today — but only as an accounts-payable record, held by a Lead Agent to settle a reimbursement. Once the vendor is paid, that record is orphaned from the two people who matter most: the homeowner whose equity it is, and the worker whose craft it was. Propreti keeps it for them — a portable, owner-held provenance record that outlives the funding cycle.

The Watt You Can Prove

Eversource and National Grid do not get paid for saving energy. They get paid for proving they saved it — to regulators, against a discount, every year. That proof is the most expensive, most disputed, most fragile number in the efficiency business. It is also the exact thing Propreti was built to make un-fakeable. This is the case for why the two largest energy companies in New England have a home here.

Ipyana Wasret9 min readRead

In this space

5 makers

Lumen Systems

Building automation

Automation

Meridian Builders

General contractor · commercial

Construction

Cornerstone Inspections

Licensed home & commercial inspectors

Real Estate

Apex Fabrication

Structural & architectural steel

Manufacturing

Ipyana Wasret

Founder, Propreti · Organizational & AI governance

Automation

Happening now

Lumen Systems attested 4.2M kWh/yr grid-tie output on the Cape Cod Community Windmill

Cornerstone Inspections verified a blower-door-tested weatherization in Roxbury — income-eligible

Meridian Builders dropped a receipt on “Data centers are eating the grid — crisis or funding?”

Lumen Systems logged an all-electric heat pump retrofit — ~51% heating energy cut

Meridian Builders is awaiting corroboration on an income-eligible heat pump + panel upgrade in Dorchester

Proof of Watt

The whole energy economy runs on watts nobody verifies. We verify them.

Carbon credits, RECs, efficiency rebates — all self-reported claims. Propreti anchors every watt, generated or saved, to a real build and the human who attested it. Born claimed. Earned to verified. A watt you can't fake.

4.2M

verified kWh / yr

60% of records human-verified · the rest still earning trust

4.2M

clean kWh generated

29k

negawatt kWh saved

1.7M

kg CO₂ avoided / yr

The watt ledger

Lumen Systems (grid-tie commissioning)

Metered grid-tie output, commissioning engineer attested.

4.2M

verified

Cornerstone Inspections (post-install audit)

Blower-door + audit confirmed ~51% heating energy reduction.

11k

verified

Cornerstone Inspections

Income-eligible heat pump + panel; owner corroborated.

10k

corroborated

Cornerstone Inspections

Blower-door-verified weatherization, fully attested.

verified

Meridian Appraisal Partners

Triple-glazed windows; awaiting independent corroboration.

claimed

Power is the binding constraint on everything ahead — AI, data centers, electrification. A verified watt is the unit the economy is missing.

The Floor

Join the debate

Data centers are eating the grid. Is that the crisis — or the funding?

The fight everyone's having on X — hosted here, where you can drop a verified receipt into the argument. Opinions are free. Receipts are verified.

Build the powerSave the watt

2 verified receipts on the floor · 889 votes

Retrofits on the record

Income-eligible homes

Measure types

Licensed trade tracks

One retrofit, the whole spine

The same machine as a build Arena or a Deal Room — more chairs, public money, a homeowner at the center.

Convene

NESEA community

Licensed trades earn continuing-ed together — the cross-tribe crew gathers before the work.

Retrofit

Vendor / licensed trade

The heat pump goes in, the walls get sealed — work that actually happened, on a real home.

Sign off

Auditor (attest axis)

A QC inspector verifies the work. Witness-with-authority — they attest, they don't build.

Reconcile

Lead Agent + funders

The reimbursement settles through the AP system. We cite this — we don't fake it as ours.

Keep

The homeowner

The verified retrofit becomes a portable, owner-held record — equity they can prove, forever.

Retrofits on the record

Born claimed, never verified. Each one earns its way up as the auditor and the homeowner independently attest.

Heat PumpElectricalIncome-eligible

Whole-home heat pump + panel upgrade replacing oil heat

Dorchester, Boston

Built by

Meridian Builders

Attested by

Cornerstone Inspections

$18,400 of verified work, owner-held · ~$1,900/yr off heating

Reimbursement settled via Lead Agent — cited, not Propreti-verified

Corroborated · earning verification

InsulationAir SealingIncome-eligible

Blower-door-verified weatherization + attic dense-pack

Roxbury, Boston

Built by

Carrick Metalworks crew

Attested by

Cornerstone Inspections

$9,250 of verified work, owner-held · ~$740/yr off the envelope

Reimbursement settled via Lead Agent — cited, not Propreti-verified

Verified on the chain

Windows

High-performance replacement windows, triple-glazed

Cambridge, MA

Built by

Joe Kain

Attested by

Meridian Appraisal Partners

$12,800 of verified work, owner-held · ~$430/yr off the envelope

Reimbursement settled via Lead Agent — cited, not Propreti-verified

Claimed · awaiting corroboration

The licensed trades who do the work

They earn continuing-ed together at NESEA events — a cited credential that makes a maker credible. The verified edge still forms only when their work is attested on-chain.

HVAC

Heat pumps, mini-splits, high-efficiency systems

Continuing-ed keeps the license current — and the install on the record.

Electrical

Panel upgrades, EV-ready, electrification

Licensed work that gates the rebate — and now gates the record.

Insulation

Dense-pack, blown-in, rim-joist & attic

The hidden craft inside the walls, finally made provable.

Air Sealing

Blower-door-verified weatherization

Measured, not claimed — the auditor's test is the attestation.

Windows

High-performance replacement & storm windows

What's in the opening, kept past the day it was paid for.

The community behind it

Real-world partners bring the trusted audience in the door. The verified chain is what Propreti owns.

NESEA

Northeast Sustainable Energy Association

The cross-tribe community where the built world's energy pros convene — architects, builders, engineers, and licensed trades. Founded 1975. Continuing-ed and BuildingEnergy events. Part of the Climate Impact Initiative.

Mass Save

Ratepayer-funded efficiency program

Underwrites efficiency retrofits for MA homeowners and commercial owners. The money gate — incentives don't pay until the work is inspected and signed off.

Lead Agent (e.g. ABCD)

Broker between funders, vendors & homeowners

Community Action Agencies hold the inspection record today — structured for the funder's reconciliation, not for the homeowner to carry. Propreti gives that record a second, owner-held home.

Rent the pipes. Own the chain. The State and the utilities keep the reimbursement plumbing. Propreti keeps the provenance — who built it, how well, carried by the homeowner, credited to the worker. That record has never been kept anywhere durable. It is now.

Illustrative seed data for preview — no live Mass Save, utility, or Lead Agent feed is connected. The architecture is real; the numbers are seeded.