Understand the portfolio
Bring building, energy and operational information together. Benchmark sites, identify trends and establish where performance differs.
Portfolio energy management
Understand your portfolio.Invest where it matters.
Zerith helps organisations understand, manage and continually improve energy performance across multiple buildings and sites.
Portfolio-wideBuilding & energy intelligence
Engineering-ledNot software-led
ContinuousMeasure, improve, verify
CONNECTED ESTATE VIEW
ZERITH + ZECO AIOne portfolio view
01 / OFFICE PORTFOLIOCompare buildings, find performance differences and direct engineering resource to the sites where it can make the greatest difference.
Portfolio-wideBuilding & energy intelligenceOne structured view across the estate.
Engineering-ledNot software-ledPhysical causes investigated by engineers.
ContinuousMeasure → improve → verifyA repeatable process, not a one-off report.
Flexible deliveryManaged or hybridSupport that fits your internal capability.
The portfolio problem
More data doesn’t always mean better decisions.
Energy bills, meter data, audits, compliance records, asset information and investment plans often exist independently. The challenge is not finding more data. It is knowing where to act first.
FRAGMENTEDENERGY
MANAGEMENT
MANAGEMENT
BUILDINGSZerith connects the individual building to the wider portfolio picture, so comparison informs a practical next action.
Our approachManage the portfolio.
Manage the portfolio.
Target the building. Improve the system.
We combine building expertise with portfolio intelligence to deliver practical, measurable improvement—not an undirected audit programme.
Portfolio intelligence → building engineering → measurable improvement
Target the opportunity
Identify buildings and major energy-consuming systems most likely to benefit from intervention, then focus detailed engineering where it matters.
Deliver improvement
Develop opportunities, prioritise investment, support implementation and verify results—feeding improvement back into the portfolio.
How we work
From portfolio overview to engineering detail.
We do not start by asking how many buildings can be audited. We start by identifying where engineering intervention can create the greatest difference.
01 / INITIAL DISCUSSION
Start with the decisions that matter.
Understand the portfolio, its operating context and commercial priorities before deciding what information or engineering work is required.
Outcome: a focused starting point—not a generic survey plan.
ZECO AI / ENABLING THE APPROACH
Portfolio intelligence powered by ZECO AI.
ZECO AI provides the common intelligence environment behind Zerith’s Portfolio Energy Management service—bringing properties, energy performance, opportunities and projects together in one place.
ZECO AI helps create an estate-wide information foundation. Zerith’s engineers determine what action is technically and commercially justified.
Explore ZECO AIILLUSTRATIVE PORTFOLIO BENCHMARK
kWh/m²Energy intensity by property
PRIORITY INSIGHT / ILLUSTRATIVEProperty 04 is operating 47% above the portfolio benchmark.
Target for further engineering investigation.
Building performance
When we find the building, we find the cause.
Portfolio analytics show where performance differs. Engineering determines why, and what can be improved.
Explore building performanceControls strategy, scheduling and setpoints often explain why an otherwise similar building performs differently. Detailed review turns the outlier into a targeted intervention.
Investment prioritisation
Invest where it makes the greatest difference.
A multi-site organisation may identify dozens or hundreds of potential improvements. Zerith turns them into a coordinated investment programme, not a list that competes for attention.
THE CAPITAL QUESTIONWhere should your next £500,000 be invested?
Energy savingCost savingPaybackCarbon reductionAsset conditionOperational riskComplianceCAPEX
One programme / multiple outcomes
Make every piece of work work harder.
An audit should not exist solely to satisfy ESOS. A building survey should not sit separately from a Net Zero strategy. Zerith connects activity so one investigation creates multiple uses and better value.
Energy managementPerformance evidence and opportunity development.
Building performancePhysical causes and practical interventions.
Energy complianceEvidence with wider operational value.
Capital investmentPrioritised, defensible decisions.
Net ZeroA credible pathway from estate evidence.
One shared programmeLess duplicated collection. More action.
Continuous energy management
From one-off audits to continuous improvement.
ZECO AI is the common information layer beneath a continuous process: understand performance, target action, improve it and measure what changed.
Flexible delivery
Your portfolio. Your capability. Our support.
Better technology should reduce unnecessary consultancy dependency, not create more of it.
Suitable for organisations requiring additional external capability or a largely outsourced energy-management function.
What we deliver
Portfolio Energy Management services.
01Portfolio energy strategy
02Energy benchmarking
03Energy audits
04BeMS optimisation
05Monitoring & targeting
06Opportunity development
07Investment prioritisation
08Compliance integration
09Performance verification
10Net Zero pathway planning
Sectors
Designed for complex estates.
Portfolio Energy Management is structured around how each estate operates, rather than forcing every building into the same improvement programme.
Commercial real estateCompare property performance and direct investment across diverse estates.
Manufacturing & industrialUnderstand sites alongside production and process-energy demands.
Hotels & leisureCompare operational performance across similar assets.
Retail & logisticsManage geographically dispersed portfolios consistently.
Healthcare & public sectorPrioritise intervention across complex estates and constrained capital programmes.
EducationCompare campuses, buildings and energy centres within large estates.
Evidence of opportunity
Engineering evidence before investment.
Examples should remain tied to genuinely substantiated project records—not illustrative portfolio claims.
Multi-building estate + central energy centre
Engineering-led review identified practical opportunities across building performance and energy infrastructure.
Approx. £300k identified savingsAverage 2.3-year payback
Three-site BeMS optimisation
Controls and operational optimisation highlighted substantial performance-improvement opportunities for further development.
More than £500k potential savings identifiedEngineering-led controls review
Frequently asked questions
Clear answers before the next investment decision.
Practical scope answers for energy, estates and sustainability leaders responsible for multiple buildings or sites.
It is a coordinated approach to improving energy performance across multiple buildings or sites. Zerith combines portfolio benchmarking, engineering investigation, opportunity development and ongoing performance management to direct attention and investment where it can create the greatest value.
An audit provides a detailed assessment of a building or system at a point in time. Portfolio Energy Management sits above individual audits: it determines which buildings should be investigated, brings opportunities together and supports prioritisation, implementation and verification.
We review building, energy and operational information, benchmark appropriate properties and identify outliers, major consumers and unusual performance—so detailed engineering resource is targeted rather than applied equally everywhere.
ZECO AI provides the common portfolio intelligence environment. It structures properties and energy information, compares performance, identifies areas requiring attention and tracks projects. Zerith’s engineers investigate the physical causes and develop interventions.
Yes. The programme can be managed by Zerith or delivered as a hybrid model in which your team handles routine portfolio activity and Zerith provides specialist investigation, assurance and additional resource.
Yes. A consistent portfolio evidence base can support compliance, building-performance improvement and longer-term decarbonisation while reducing duplicated data collection.
A focused conversation
Discuss your portfolioStop managing energy one building at a time.
Understand the portfolio. Target the opportunity. Improve the building.