Working with your contractor on a C-PACE project

You own the building, and a contractor has just told you C-PACE can pay for the job. This guide covers whether your programme makes you use a registered contractor, what that registration actually means, who prepares the scope and the energy work, how money moves to the contractor while the project is being built, and the pitches that should make you slow down. All sources were checked on 13 October 2026. Contractor rules are set programme by programme, so nothing here about one state applies to another. Find your own programme on our state pages.

Do you have to use a registered contractor?

Sometimes. It depends entirely on the programme, and the programmes do not agree.

Rhode Island: yes. The state’s C-PACE regulation, 830-RICR-10-05-2, says in section 2.7 that “the RI C-PACE program requires that contractors be registered with the program.” Contractors must also meet all Rhode Island state licensing and registration requirements to take part, and an approved contractor stays on the registered list for three years from the date it qualifies.

Montana: yes, at least for the lead contractor. The Montana Renewable Energy Association says that “at a minimum, the general/lead contractor working on a C-PACE project must be an approved Registered Contractor” with the Last Best PACE Program.

Connecticut: a registered contractor or a qualified one. Connecticut Green Bank’s C-PACE Program Guidelines (version date 15 March 2024) say owners “should work with a qualified energy auditor and/or contractor with demonstrated experience” to define the scope, and that the scope of work “should be prepared and submitted by a Qualified Contractor or Registered Contractor.” A Qualified Contractor is defined as anyone who holds a Certified Energy Manager or Certified Energy Auditor accreditation, is a Professional Engineer with demonstrated relevant energy experience, or is a contractor with relevant demonstrated experience.

Petros PACE Finance’s FAQ says an owner can use their own contractor “so long as the contractor is a registered contractor if required by the applicable C-PACE program.”

The practical step: before you sign a construction contract, read your programme’s contractor rule yourself, or ask the programme administrator. Do not rely on the contractor’s description of it.

What registration involves, and what it does not tell you

• Connecticut. To be a Registered Contractor, the Green Bank says a firm must complete an online registration and provide references; within the last 12 months, have submitted at least one approved C-PACE project or attended a C-PACE training; be in good standing with the Green Bank; stay active in the programme; and attest to the Contractor Terms and Conditions.
• Montgomery County, Maryland. The MC-PACER Program Guidelines (last updated November 2025) say any firm holding the applicable state and local licences is eligible to register. The registration form asks for licences and certifications, the services the firm offers (from energy audits to installation) and the improvements it installs, and the firm agrees to be listed publicly on the programme website. The guidelines say to allow up to 7–10 business days for approval.
• Maryland (MD-PACE). The Maryland Clean Energy Center says that once approved, a contractor is listed on the md-pace.com website.

What registration does not do is vouch for the work. Montgomery County is explicit: by establishing contractor registration criteria, the county and the Program Administrator “are not recommending or endorsing any specific Contractor or warranting the reliability of any such installer.” Connecticut Green Bank’s C-PACE risk disclosure (Appendix H to its guidelines) says the Green Bank “does not endorse, guarantee, warranty, make any representations, or assume any liability for” the workmanship or performance of any project or third party, or for the design, engineering or construction of the project.

So check a registered contractor the way you would check any other: licences, references from comparable buildings, insurance, and how they have handled disputes.

Who prepares the scope, the energy work and the cost estimate

In Connecticut, the contractor or energy auditor prepares the scope and the audit. There, the guidelines say the Qualified or Registered Contractor determines the minimum required energy audit level, which can range from a simple walkthrough of the building to an investment-grade audit. The audit is meant to set the building’s baseline energy use, recommend improvements, estimate the useful life of each, and determine the total project capital cost and the projected savings.

An independent reviewer checks it. Connecticut’s guidelines say the Technical Administrator or an approved Technical Reviewer validates “the reasonableness of project costs and energy savings projections” and confirms the project’s savings-to-investment ratio is greater than one. That review has three tasks: verify that the baseline energy use is representative, validate the projected savings, and confirm an adequate commissioning plan exists. On the Green Bank’s process page, technical underwriting starts with the Green Bank requesting documentation from your contractor on the project and its energy savings projections.

The capital provider may bring its own engineers. PACE Equity’s FAQ says an energy study is required to qualify for its funding and that its in-house engineering team qualifies the project. Petros’s C-PACE 101 guide says Petros facilitates the mandatory energy audits with third-party engineering firms to identify eligible measures and their life expectancy.

Two things follow for the owner. First, the contractor’s savings projection is an input, not a promise. Connecticut’s risk disclosure says neither the capital provider nor the Green Bank guarantees energy savings, and that projected cost savings are not guaranteed. Second, the disclosure encourages owners to have installation, servicing and financing contracts reviewed by competent legal counsel and engineering or energy consultants before signing. If the only person who has looked at the numbers is the person selling the job, get a second set of eyes.

How the contractor gets paid

Lump sum or draws. The Maryland Clean Energy Center tells MD-PACE contractors they can receive payments “either in a lump sum or in scheduled construction draws.”

Milestones agreed up front. Connecticut Green Bank says it works with the contractor “to draft a disbursement schedule based on construction milestones,” and that the owner requests funds as those milestones are met. After a completion site visit confirms the measures were installed as planned, any remaining C-PACE funds are disbursed.

Escrow, inspection and approval. Petros’s FAQ says it funds each project at closing into an escrow account. Its C-PACE 101 guide says that during construction funds are disbursed pari passu with the senior lender’s funds as costs for the C-PACE-eligible measures are incurred, that a third-party engineering or inspection firm reviews all draw requests, and that Petros approves them before disbursement. PACE Equity’s FAQ says future fundings follow “the agreed upon construction funding schedule.”

One package when there is also a construction loan. Writing in the Construction Lender Risk Management Roundtable’s 2026 journal, two Nuveen Green Capital managing directors say borrowers submit a single monthly progress report and draw requisition package to both the senior lender and the C-PACE lender, and that typically one mutually agreed third-party inspection agency is retained to visit the site and verify completed work.

What this means for you: the draw schedule in your construction contract and the disbursement schedule in your C-PACE financing agreement need to match. If the contractor expects a large deposit up front and the capital provider only releases money against verified work, someone has to fund the gap, and it will be you. None of the programme documents cited here sets rules on lien waivers or retainage, so ask your capital provider and your lawyer how they will be handled before you sign either document.

Change orders and cost overruns

Budgets move. The question is who has to agree before the C-PACE money follows.

The Nuveen Green Capital authors describe their monitoring during construction as including “evaluating change orders for scope and pricing reasonableness” and reviewing material reallocations from contingency.

If the overrun is large, C-PACE can sometimes help rather than hurt: the same authors note that C-PACE is also used to finance mid-construction projects facing cost overruns or gaps in funding. That is a separate financing conversation, not something to settle on site with the contractor.

Red flags

These are the pitches that should make you slow down.

“It’s free money” or “it pays for itself.” California’s financial regulator warns about exactly this sales pattern in the residential market: it says “PACE is NOT a free government program” and that some salespeople and building contractors have in the past misrepresented the cost of PACE projects and the financing. The residential and commercial programmes are different products (see residential PACE vs C-PACE), but the sales pattern travels. And as Connecticut’s disclosure puts it, projected savings are not guaranteed.

A quoted interest rate. PACE Equity’s FAQ, for instance, says its rate is locked at the initial closing. Get the term sheet from the capital provider directly; our provider directory lists who is active.

Pressure to sign the construction contract before the financing is approved. Petros’s C-PACE 101 guide lists written lender acknowledgment as required if the property is mortgaged. A contract that commits you to the full price whether or not the C-PACE closes leaves you holding the bill.

“You’re registered, so you’re approved.” As above, Montgomery County says plainly that its registration criteria are not an endorsement. Check the contractor on its own record.

A savings estimate nobody else has reviewed. If the numbers that justify the project come only from the firm that will be paid to install it, wait for the independent technical review, where your programme has one, before you commit.

When to bring in help

If a contractor has proposed a C-PACE-funded project and you want a second opinion on whether the financing fits, and whether C-PACE is the right tool at all, get in touch. C-PACE Desk is an advisory and placement service, not a lender and not a programme administrator, and we do not rate or recommend contractors. We can tell you what your programme requires and help you get term sheets from capital providers.