Portfolio Reporting

Multi-site solar performance reporting that shows which roof needs you

When you own solar on several buildings, multi-site solar performance reporting turns a pile of monitoring logins into one monthly or quarterly view, ranked by what each problem is costing you.

Book a free fit call See how it works

Monthly or quarterly reporting; onboarding in 2–3 weeksFlat fee, in writingNo commissions, ever

An orchestra of rooftops with solar arrays conducted by a pencil drawing a waveform — The idea
A portfolio is an orchestra. You only notice the instrument that's out of tune if you listen to all of them at once.

What multi-site solar performance reporting covers

Multi-site solar performance reporting gives owners of several systems one regular answer: which arrays are healthy, which aren’t, and what the difference is worth. Each month or quarter, we measure every site against its own weather-adjusted baseline and rank any problems by estimated dollars at risk. Your facilities team gets a short list of what to check first, and your board gets numbers it can follow.

Mixed fleets are normal. A district’s high school might run one inverter brand, the bus garage another, and the newest elementary school a third. We bring them into one report.

Why kWh rankings mislead

Here’s an illustrative June for a small portfolio:

Site	Size	Actual kWh	Expected kWh	Actual ÷ expected
Middle school	150 kW	18,900	19,800	95%
Poultry barn	60 kW	7,700	7,900	97%
Fellowship hall	30 kW	3,000	4,000	75%

Ranked by production, the fellowship hall comes last, which is expected for the smallest roof. Ranked against its own baseline, it’s also the only site losing a quarter of its output. That’s 1,000 kWh in one month. Ranking by kWh tells you which roof is biggest. Ranking by performance tells you which one needs attention.

What each report measures

Actual versus expected production for every site, month by month.
Performance ratio, which normalizes for system size and sunlight.
Availability, the share of daylight hours a system was producing.
Data completeness, so missing data is never mistaken for missing production.
Year-over-year trend, to separate normal aging from a fault that’s getting worse.

Triage, not alert noise

Monitoring platforms send a lot of alerts, and most owners learn to ignore them. Our triage list sorts issues by estimated value at risk and by how long they’ve lasted. A site that stops reporting isn’t necessarily a site that stops producing. A failed cellular modem looks alarming in an app, but the utility meter often shows the array working normally. We check before anyone schedules a visit.

Monthly or quarterly?

It’s a trade between speed and cost. Monthly reporting catches a failed string or a tripped breaker within weeks, which matters when one site’s loss is worth more than the extra reports. Quarterly is often enough for a few small arrays, where a month of lost output costs little. During onboarding we estimate what a month of downtime at each site is worth, so you can choose the cadence on numbers rather than habit.

Built for owners with more than one roof

School districts, churches with several buildings, franchisees, housing authorities and farms with arrays on poultry houses and shops all face the same problem. Nobody has time to log in to five platforms every week. Onboarding takes 2–3 weeks. After that, Theo Okafor’s team reports on the schedule you choose, and our monitoring metrics guide explains each measure.

If a site needs a deeper look, a one-time System Health Check digs in. Production data can also feed carbon and Scope 2 reporting. Public and nonprofit owners can learn more on our nonprofits, schools and public bodies page.

What you walk away with

Outcomes, not opinions

One view of every site

Different inverter brands and monitoring platforms brought into a single report with the same measures for every system.

Problems ranked by dollars

Issues sorted by estimated value at risk, so the first service call goes where it's worth the most.

Fewer false alarms

Communication dropouts separated from real production losses, so nobody rolls a truck for a dead cellular modem.

Numbers a board can read

An annual summary for school boards, finance offices or sustainability reports, with the method written down.

How it works

The process, start to finish

Monthly or quarterly reporting; onboarding in 2–3 weeks. You'll know the scope and the fee before any work begins.

Fit call and site list
A free 20-minute call, then a list of every site with its size, equipment, install date and who has the logins.
Onboarding
Over 2–3 weeks we gather access and documents and set up data collection for each site.
Baselines per site
We build a weather-adjusted expected-production model for every system, so each one has its own yardstick.
Recurring reports
Monthly or quarterly reports with metrics, the ranked triage list and plain notes on what changed.
Review calls
A walkthrough after each report for whoever needs it: facilities, finance or the board.

Deliverables

What's in the report

Monthly or quarterly portfolio report
Site-by-site expected versus actual production
Performance ratio and availability for each system
Alert triage list ranked by estimated dollars at risk
Data-gap log separating communication outages from production outages
Annual summary for boards, finance offices or sustainability reports
Email support between reports at support@center4solar.com

Where our work stops

Boundaries we keep

We don't dispatch crews, inspect sites or perform repairs; we tell your licensed service provider what to check.
We don't manage operations and maintenance contracts or sell monitoring hardware.
Any emissions figures we include are non-certified estimates, not third-party verified results.

Our full scope of services

Part of our Performance Analytics practice. Also in this practice: System Health Check.

FAQ

Questions about Portfolio Performance Reporting

Our systems use different monitoring platforms. Is that a problem?

No. Mixed fleets are the normal case. We pull data from each platform or from exports, and report every site with the same measures so they can be compared.

What is performance ratio, and why not just rank sites by kWh?

Performance ratio compares what a system produced with what it should have produced in the sunlight it received. It adjusts for size and weather, so a small roof can be compared fairly with a large one. Ranking by kWh mostly tells you which roof is biggest.

How many sites do we need for this to make sense?

Two or more. The fee is a flat amount quoted after the fit call, based on the number of sites, platforms and reporting frequency.

Can the reports feed our sustainability reporting?

Yes. Production data can support carbon and Scope 2 reporting, which our sustainability team prepares as non-certified estimates using published methodologies.

What happens when a site stops reporting?

We check whether it stopped producing or only stopped talking, using utility meter data where available. Real losses go to the top of the triage list, and anything urgent comes to you by email before the next report.