Fragmented data
Energy, asset and operational information sits across separate systems and teams.
Portfolio energy managementSee every building.
See every building.
Compare every site.
Invest where it matters.
Connect building engineering, energy management and portfolio intelligence to identify waste, prioritise intervention and coordinate improvements across your estate.
One estate. A shared evidence base.
BuildingsSystemsOperations
ZECO + ENGINEERING INSIGHTPortfolio visibility
Comparable performance.
Clear investment priorities.
UnderstandPrioritiseDeliver
From individual sites to coordinated action.
50+ yearsCombined consultancy experience
Engineering-ledDecisions grounded in technical evidence
Portfolio-wideConsistent visibility across your estate
Scalable deliveryValidated improvements applied across sites
The portfolio challengeMultiple sites.
01 02 03 04 05
Multiple sites.
Limited shared visibility.
Repeated reporting costs and underused internal expertise compound the problem. Leadership needs a consistent view of performance, while site teams need the tools and support to act.
Inconsistent reporting
Different metrics and methods prevent meaningful comparison between sites.
Competing priorities
Projects compete for funding without a shared basis for investment decisions.
Isolated improvements
Successful measures remain local instead of being assessed for wider deployment.
Limited ownership
Unclear responsibilities slow delivery and weaken accountability for results.
Disconnected sites and reportingA portfolio visibility gapFragmented investment and missed opportunities
The Zerith approachOne portfolio.
01 02 03 04 05
One portfolio.
A coordinated plan.
Trusted data
Bring energy, asset and operational information into a consistent evidence base.
Comparable performance
Benchmark sites with context for building use, operating hours and demand.
Prioritised investment
Rank measures by savings, cost, payback, risk and deliverability.
Scalable improvements
Validate interventions before applying them to other suitable buildings.
Clear ownership
Agree responsibilities, delivery milestones and measurable outcomes.
Consistent data, engineering judgement and operational knowledge create a practical programme that your teams can own and maintain.
From compliance to performanceReduce repeated effort.
Reduce repeated effort.
Build lasting capability.
Coordinate applicable ESOS, SECR, CCA and ISO 50001 work through shared datasets and aligned methodologies. Heat-network requirements can also be incorporated where relevant, while retaining each scheme’s specific obligations.
- Reduce duplicated data collection, analysis and reporting.
- Train internal teams and provide structured technical guidance.
- Retain engineering quality assurance and assessor oversight where required.
- Use the evidence to inform energy improvements and Net Zero planning.
ZECO AI / Intelligence with engineering contextFrom scattered data
From scattered data
to one clear view.
See where energy is being used, where performance differs and where to investigate next. ZECO supports the evidence; experienced engineers turn it into practical decisions.
Book a ZECO conversationSee the whole estate
Know where to look first.
Bring your buildings into one view, identify outliers and direct engineering effort towards the sites that warrant a closer look.
- Compare performance across sites
- Identify patterns and exceptions
- Focus your next investigation
ZECO / ENERGY INTELLIGENCEPLATFORM VISUALISATION
Platform visualisations from Zerith. Figures shown are illustrative, not a savings forecast.
Engineering deliveryTurn portfolio insight
Turn portfolio insight
into practical work.
Use the evidence to select sites, define interventions and direct engineering effort where it can create meaningful value.
Explore Building Performance01Targeted energy audits & team engagement
Select representative and high-impact sites for engineering audits, energy treasure hunts or Kaizen events. Combine technical analysis with the knowledge of the people operating each site.
02HVAC, controls & BeMS optimisation
Address plant sequencing, operating schedules, setpoints and control strategies. Establish whether an intervention can transfer to similar systems elsewhere.
03Renewable energy integration
Assess opportunities such as rooftop and car-park solar PV against demand, site constraints and investment priorities.
04Power distribution & infrastructure
Investigate electrical distribution, power quality and infrastructure opportunities as part of a coordinated estate programme.
Flexible delivery modelsThe right support.
01 02 03
The right support.
The right ownership.
Supported internal delivery
Your teams use ZECO with structured training, guidance and engineering oversight from Zerith. Build ownership while retaining specialist review where required.
Hybrid delivery
Internal teams manage routine activities while Zerith supports complex analysis, selected site investigations, quality assurance and portfolio strategy.
Fully outsourced delivery
Zerith coordinates the agreed programme, with ZECO providing portfolio visibility and a consistent evidence base for decisions and progress reviews.
Scaling proven solutionsProve the improvement.
01 02 03 04
Prove the improvement.
Then extend its reach.
Select & investigate
Choose representative sites and understand the system, operating pattern and baseline.
Test & verify
Implement a focused intervention and confirm the outcome before wider deployment.
Adapt & replicate
Check suitability at other sites, allowing for technical and operational differences.
Monitor & improve
Track performance, capture lessons and feed new opportunities into the programme.
What to do. Where to do it. When to deliver it.
Build a phased, multi-year programme around operational requirements, capital planning and Net Zero objectives. Coordinate supply chains and procurement across sites to support economies of scale and consistent delivery.
Programme examples / Proposed outcomesHow a joined-up programme
Proposed programme Proposed programme Proposed programme
How a joined-up programme
could work.
These examples describe proposed delivery models and projected outcomes published by Zerith. They are not presented as completed savings.
Commercial real estate
50+ office buildings
Up to 60%Projected ESOS delivery cost reduction
£10,000–£12,500 estimated saving versus traditional consultancy.
View proposed approach
Internal teams prepare the audit using ZECO, supported by pre- and post-audit guidance, engineering quality assurance and ESOS Lead Assessor review.
Manufacturing & industrial
Two manufacturing sites + distribution
Up to 50%Projected ESOS delivery cost reduction
£6,000–£7,500 estimated saving versus traditional consultancy.
View proposed approach
A client-led treasure hunt, audit or Kaizen event combines site knowledge with on-site specialist support, followed by a structured evidence pack and assessor review.
Multi-site industrial
Multiple compliance schemes
Shared deliveryProposed integrated compliance programme
No quantified saving confirmed for this example.
View proposed approach
Consolidate applicable CCA, SECR and ISO 50001 / ESOS work around shared data, training and technical oversight to reduce duplication and improve auditability.
Portfolio project snapshotsEvidence with
Industrial manufacturer19% Hotel chain£180k / year Commercial property portfolio27%
Evidence with
the right context.
Energy reduction identified
Across six UK sites, with delivery envisaged in less than three years. Supported audits, BeMS and FMAS reviews informed an energy-saving project roadmap.
Predicted portfolio savings
A desktop review and feasibility study led to load-balancing systems on test sites. The published case states that measurement and verification was in progress.
EPC rating uplift identified
Portfolio EPC review, MEES assessment and BeMS audit informed a benchmark EPC and an upgrade strategy. This is an identified rating improvement, not a measured energy saving.
Connected servicesOne programme.
One programme.
Connected expertise.
Your questions, answeredPortfolio energy
Portfolio energy
management FAQs.
Understand the programme, the delivery options and what the figures mean.
Book a free 30-minute callWhat is multi-site energy management?
A structured approach to energy performance, compliance and decarbonisation across multiple buildings or assets. Consistent data, meaningful benchmarking and coordinated engineering programmes help improve visibility and prioritise work across the estate.
How can I reduce energy costs across multiple sites?
Start with reliable data and an understanding of actual operation. Identify unnecessary consumption, assess HVAC and controls, and prioritise practical measures before larger investment. Validate successful measures before adapting them to similar sites.
Can compliance be delivered across multiple sites efficiently?
Yes. Shared datasets and coordinated analysis can reduce duplication across applicable schemes such as ESOS, SECR, CCA and ISO 50001. Each scheme’s requirements and any required assessor or certification responsibilities still need to be satisfied.
How does ZECO AI support portfolio management?
ZECO brings energy and compliance information into a structured portfolio view. It supports benchmarking, investigation of unusual consumption, prioritisation and reporting, with engineers and operational teams providing context. Visibility and update frequency depend on available data and connections.
What savings can be achieved?
Zerith describes indicative compliance delivery cost reductions of 20–30% for suitable single-service delivery and 50–70% for suitable multi-site, multi-service programmes. These are not energy-bill savings or guarantees. Energy-saving opportunities require site-specific engineering assessment, implementation and verification.
Can this be delivered in-house?
Yes, through a supported internal model using ZECO, training, technical guidance and review. Hybrid and fully outsourced options are also available. The division of responsibilities should reflect internal capability, programme complexity and required specialist oversight.
How do you improve energy efficiency in office buildings?
Review HVAC, controls, schedules, setpoints and BeMS operation to identify waste and system underperformance. EPC, MEES and NABERS assessments can inform relevant decisions, with more detailed engineering reviews where needed. Proven measures can then be assessed for use across similar buildings.
How do you develop a strategy for different types of site?
Align datasets and methods, then account for differences in building use, occupancy, operating hours and demand. Rank interventions by impact, feasibility, risk and return, and phase the programme around operational and investment constraints.
Can I track energy and carbon savings by building?
Yes, where suitable data is available. Use consistent KPIs and appropriate baselines to compare performance, allowing for changes such as weather, occupancy, production or operating hours. This helps distinguish measured improvement from a forecast or an identified opportunity.
Start with a portfolio discussionBring your estate
Bring your estate
into focus.
Tell us about your sites, your data and the decisions you need to make. We’ll help identify a practical starting point.
Your next step
- Discuss your portfolio and priorities
- Review your data and internal capability
- Explore the right delivery model
Prefer email? info@zerith.uk