Historical Context:
UK electricity prices rose at 3.8% annually (2010-2021). Conservative default of 3.0% models compound savings growth as energy prices increase over time.
Effect: Shows inflation-adjusted savings in Financial Impact section. Set to 0% to see nominal (constant price) projections.
Funding Assumptions
Funding Term (months)
Interest Rate (%)
Project Deposit (£)
Svitzer Marine
Energy & Cost Savings Proposal
This proposal turns your energy data into a live, transparent financial plan for a full-site LED upgrade - built to reflect how your building actually operates.
Would You Leave The Taps Running All Night?
If you walked into the changing rooms and found every tap running, you wouldn't wait for the next budget cycle to turn them off. You would stop the waste on the spot.
Right now, your lighting is doing the same thing – quietly draining up to £0 per year in unnecessary energy spend. This dashboard shows, in real time, how much of that can be stopped with a full LED upgrade, and what that means for your budget.
You are already committing up to £0 every month to lighting energy. The question is not "can we afford this upgrade?" It is "how quickly do we want to stop giving that money away?"
This dashboard shows how a full LED upgrade:
Cuts your lighting spend by up to 0%
Reduces 0 tonnes CO₂ annually
Pays for itself in as little as 0 years
Remains cashflow-neutral or better from day one, using your existing energy budget
You are already paying for this upgrade. The only real question is whether that money continues to leave the building, or starts working for it.
Why This Dashboard Matters
Every LED upgrade proposal should come with complete transparency - and a clear explanation of what’s being offered, how it performs, and what it’s worth over time. This interactive dashboard gives you exactly that: real figures based on conservative assumptions, premium fixtures selected for compliance and long-term performance, and calculations you can explore and verify yourself.
Use the scenario planner to test different assumptions. Adjust your energy rates, usage schedules, or operational patterns and see the real-time impact on your financial outcomes. This is how a properly engineered LED upgrade should be presented - practical, flexible, and fully accountable.
If you'd like to walk through any aspect together, our team is here to explain the detail behind every calculation and support your decision-making process.
Key Assumptions & Methodology
This proposal demonstrates how your existing energy budget can fully fund a comprehensive LED upgrade,
including both premium fittings and professional installation, while achieving immediate positive cash flow.
Conservative Projections
Our calculations use conservative estimates to ensure realistic outcomes. We've based operating hours on conservative patterns without including potential additional savings from extended day periods and enhanced controls.
Premium LED Specification
We've specified higher-efficiency LED solutions that extend whole-life value. With 60,000+ hour lifespans and superior lumen-per-watt performance, these fixtures deliver a stronger return on investment over their operational lifetime when compared to standard fittings.
Flexible Financing
Our financing options allow you to spread the investment over time while maintaining positive cash flow. Adjust the funding term and deposit in the calculator to find the optimal structure for your budget.
🚀 Quick Start Guide
This interactive dashboard is designed to give you granular detail and maximum transparency over the potential savings from upgrading your lighting to LED. Every figure shown here can be tested, adjusted, and validated against your own knowledge of your building's operations.
Right now, a significant portion of your energy budget is being spent powering outdated, inefficient lighting. That money is going straight to your energy provider — and you are getting nothing in return. This dashboard shows you exactly how much you could reclaim, and over what timescale.
No energy analysis can be 100% accurate — every building operates differently, and real-world usage varies. That is precisely why we have built this tool. Through the Usage Profile and Scenario Planner, we provide a range of potential savings — conservative and actual — that is not only realistic but can be checked against your known energy consumption. Our aim is to give you maximum confidence in the numbers we provide.
Use the Scenario Planner (left sidebar) to adjust any assumption and watch every metric update in real time. The best places to observe the effects of your changes are the Financial Case and Financial Impact sections — but every figure on the page responds instantly.
📈 Why Energy Inflation Matters
Energy prices have risen consistently over the past two decades and are projected to continue doing so. This dashboard includes an Energy Price Inflation section that models how your savings compound over time — because the energy you save today becomes worth more every year. A saving of £30,000 in year one could be worth over £40,000 by year five at typical inflation rates. The longer you wait to act, the more you pay at ever-increasing rates.
🔍 Test Our Assumptions
We do not expect you to take our numbers on trust. The Methodology section (towards the bottom of the dashboard) lays out exactly how every calculation works — from how we estimate your current consumption, through the LED replacement modelling, to the financial projections.
We encourage you to challenge every assumption. Adjust the operational days for each zone in the sidebar — do your work areas really operate 250 days? Change the hours — are corridors lit for 8 hours or 10? Toggle between conservative and actual usage profiles to see the range. If our baseline figures do not match your reality, adjust them until they do. The savings will recalculate accordingly.
A practical test: Take your most recent electricity bill and compare your actual annual energy spend with the existing consumption figure shown here. If they are in the same ballpark, you can have confidence that the projected savings are equally realistic.
🎛️ Using the Scenario Planner
Top Panel Controls
📋 View Settings Summary: Opens a printable summary with all current settings — ideal for board papers and record-keeping
Reset Defaults: Returns every value to the conservative baseline instantly
Usage Profile Toggle
OFF (Default): Conservative estimates — deliberately cautious for budget planning and governance approval
ON: Actual usage patterns based on your documented operating hours — a more realistic projection of what you will save
We recommend presenting the conservative figure for approval and treating the actual figure as your likely outcome.
Dashboard, Zone & Area Settings
Electricity Rates: Day and night rates with an auto-calculated blended rate
Zone Days: Operational days per year for each building zone — offices differ from workshops, corridors from stores
Area Hours: Daily operating hours for each space type — adjustable individually to match your reality
PIR Controls: For areas with motion sensors, dual inputs show current hours (without sensors) → LED hours (with sensors) to model the combined saving
Period-Based Zones
Main Hall: Operates on a weekly schedule with different hours per weekday — expand to adjust individual days (e.g. Thursday and Friday evening events)
Library: Has different schedules under conservative and actual profiles — toggle the Usage Profile to see how different operational patterns change the figures
Sports Pitch: Seasonal periods for winter floodlighting and evening hire — adjustable days and hours per period
External Facilities Toggle
Include or exclude: External facilities (car parks, sports pitches, perimeter lighting, pathways) can be toggled in or out of all calculations — useful for phased project planning or separate budget approval
Financial Breakdown: When enabled, shows Main Building and external facility costs separately with a Combined Total
📈 Understanding the Results
The Financial Case
The most immediate section to watch when adjusting the sidebar. Shows:
Annual Savings: Your yearly energy cost reduction
Simple Payback: Years to recover investment if self-funded
Funded Payback: Payback period including finance interest
Net Monthly Cashflow: Savings minus funding payment — positive from day one if structured correctly
Financial Impact & Lifetime Value
10-Year Projection: Cumulative savings over a decade, accounting for energy inflation
Lifetime Value: Total return over the full lifespan of the LED installation — typically 25–30 years
Replacement Cycle: When the LEDs will need replacing, based on actual usage hours per zone
Performance by Area
Zone Breakdown: Shows each building zone with its areas, existing vs proposed consumption, and savings
Biggest Wins: Quickly identifies which areas deliver the most savings — typically corridors with PIR sensors and high-use work areas
Bar Chart: Visual savings comparison across all areas
Smart Control Strategy (PIR Sensors)
Dual Savings: PIR sensors reduce operating hours on top of LED efficiency — the combined effect is dramatic
Area Breakdown: Shows exactly which areas benefit from motion sensors and by how much
Toggle On/Off: Disable PIR calculations entirely to see the LED-only saving as a baseline
Methodology Section
Scroll to the bottom of the dashboard to find a detailed breakdown of every calculation. This section shows the formulas used, the assumptions made, and the data sources — so you can verify the numbers independently.
Financing Options
Funding Term: 12–87 months available — the dashboard auto-selects the shortest term that maintains positive monthly cashflow
Interest Rate: Adjustable based on your actual finance quote
Deposit: Optional (0–100% of project cost) — see the impact on monthly payments instantly
🔄 Comparing LED Options
Option Buttons (A, B, C)
Three LED specifications: Different fixture lifespans and capital costs
Click any option: The Financial Case box updates to show that option's costs and payback
All three visible:3-Way LED Options Comparison chart always shows all options side-by-side
3-Way LED Options Comparison Chart
Visual comparison showing capital cost, funded payback, 10-year value, and fixture lifespan for all three options simultaneously.
Updates live: As you adjust funding terms, rates, or deposit in the sidebar, watch all three options recalculate
Identifies trade-offs: Lower capital cost vs longer lifespan, or shorter payback vs total value
Scenario testing: See how interest rate or term length affects the comparison between options
What Updates vs What Stays Constant
Changes when switching options: Capital cost, funded payback in Financial Case box
Sidebar changes affect all options: Adjusting funding term or interest rate recalculates all three simultaneously
⚽ Sports Pitch Floodlights
New Installation - Running Cost Projection
This section models the running costs for new floodlight installation on the sports pitch.
Unlike the main building LED retrofit (which shows savings vs existing lighting), this is a new facility with no previous lighting to compare against.
Using the Hours Slider
Drag the slider: Adjust estimated annual usage from 250 hours (light use) to 1,500 hours (heavy use)
Live calculations: Annual running cost, energy consumption, and CO₂ emissions update instantly
Scenario planning: Test different usage levels to budget appropriately for electricity costs
Project Costs Summary
Sports Pitch Installation: Capital cost for the floodlight system
Sports Pitch Running Cost: Projected annual electricity (updates with slider)
Main Building LED Upgrade: The retrofit project cost with payback period
Combined Project Cost: Total investment for both projects together
⚡ External Facilities (Retrofit)
LED Upgrade for Existing External Facilities
This section covers retrofitting existing external lighting (car parks, sports pitches, perimeter, pathways) with LED replacements. Unlike new installations, this shows energy savings compared to your current fittings.
Using the External Facilities Toggle
⚡ External Facilities toggle: Found in the sidebar — switches all external facilities on/off
When ON: External facilities included in all calculations, charts, and project cost
When OFF: Only main building calculated — useful for phased projects or separate budget approval
💡 Common Use Cases
For Governors & Trustees
Focus on the Executive Summary and Financial Case. Toggle between conservative and actual to see the range. Check the funded payback — if it is under 5 years with positive monthly cashflow, the investment case is strong. Export the Settings Summary for board papers.
For Finance Teams
Adjust the funding term, interest rate, and deposit to match your actual finance options. Compare funded vs self-funded payback. Check the Energy Price Inflation section to understand long-term value. Use the Methodology section to verify calculations against your bills.
For Facilities & Estates
Review the area hours and zone days — adjust to match your operational reality. Validate PIR sensor assumptions for corridors and stores. Check the Lifespan Breakdown to plan replacement cycles by building. Review fixture specifications in the Technical Details.
⚡ Pro Tips
Click "View Settings Summary" to see all current assumptions at a glance — perfect for documenting scenarios
Use "Reset Defaults" to quickly return to baseline calculations when testing multiple scenarios
Toggle between conservative and actual usage to show governors the range of possible outcomes
Check the Methodology section at the bottom to verify our calculation approach against your own data
The Energy Price Inflation section demonstrates how savings compound — this is often the most compelling argument for acting now rather than waiting
Every figure on this page updates in real time — no save button needed, no page refresh required
Estimated Energy & Cost Analysis
Option A
Estimated Consumption, Expenditure & Emissions
Current Installation
Post LED Upgrade
Estimated Annual Savings
The Financial Case
The Financial Impact
Option A
Cash Flow Neutral or Better from Day One
Your projected energy savings are designed to match or exceed funding costs. By adjusting deposit levels and funding terms,
you can tailor the financial profile to suit your strategy - ensuring the upgrade delivers immediate value while modernising your estate.
3-Way LED Options ComparisonClick to hide
Side-by-side analysis of all LED upgrade options using your current settings
Annual Savings Comparison
Whole-of-Life Analysis
Total impact over fixture lifetime based on your current settings and weighted average operating hours across all zones
Total Cost of Ownership Over Time
Cumulative costs including installation, energy, and fixture replacements.
Chart shows whole-life value based on actual fixture lifespans and your current settings.
The Case for Intelligent Design
The difference between a lighting quotation and a lighting design
Click to hide
The Power of Compounding Savings
Click to hide
Why Efficiency Matters More Than Price
Energy savings don't stay flat - they grow every year as electricity prices rise. Using a conservative
3% annual inflation rate (the UK historical average is 3.8%,
so we're being cautious), your Year 1 savings of £0 grow to
£0 over 10 years and
£0 over 30 years.
This is the compounding effect. And it's why the efficiency percentage in any LED proposal matters far more than the headline price.
The Multiplier Effect
Every £1 saved in Year 1 grows to significantly more over the fixture lifetime:
If you save £1 in Year 1...
At 3% inflation
At 3.8% inflation
By Year 10
£1.34
£1.45
By Year 20
£1.81
£2.10
By Year 30
£2.43
£3.07
Every 1% of efficiency you gain today is amplified 30 times over the fixture lifetime.
Every Month of Delay Has a Price
While you're evaluating options, your current lighting continues consuming
£0 per month more than it needs to.
That's £0 per year in avoidable costs.
⚠️ The Regulatory Reality
Since 2023, fluorescent tubes can no longer be manufactured or imported into the UK under RoHS regulations.
Existing stocks are finite and diminishing. As supply tightens, replacement tube prices are rising - and will continue to rise.
Maintaining your current lighting isn't just inefficient; it's becoming progressively more expensive.
Here's the reality most proposals don't mention: your existing lighting will need replacing regardless.
It's no longer a question of "if" but "when" - and the economics of waiting are getting worse, not better.
The upgrade cost is coming whether you act now or in two years - that figure doesn't change.
What changes is how much of that cost your energy savings help offset, and how much you'll spend on
increasingly scarce fluorescent tubes in the meantime.
⏱️ The True Cost of Waiting 1 Year
Delaying doesn't just cost you one year of savings — it permanently shrinks your total lifetime benefit.
That first year's savings, if captured now, would compound with rising energy prices over the fixture lifetime:
£0
Direct Loss (Yr 1)
Gifted to energy supplier
£0
10-Year Impact
Compounded opportunity cost
£0
22-Year Impact
Total lifetime reduction
💡 These figures show how much less your total lifetime benefit will be if you wait 1 year to start the project.
The savings you miss in Year 1 can never be recovered, and their compounding value is lost forever.
The question isn't "can we afford to upgrade?" It's "can we afford to keep paying twice -
once in wasted energy and rising maintenance costs, and again when we inevitably have to replace anyway?"
See How Efficiency Impacts Your Returns
Click to expand
Your Solution
Project Cost:£0
Energy Reduction:0%
Year 1 Savings:£0
(from your data)
Alternative Scenario
Project Cost:
£
Energy Reduction:
%
Year 1 Savings:£0
Compare against:
Project Cost:£0
Energy Reduction:0%
Year 1 Savings:£0
Default: 85% of your values - a typical "budget" option
Cumulative Net Value Over Time
Shows how savings accumulate (minus funding costs) for each scenario
The Verdict
The Bottom Line
Over 30 years,
this project delivers £0
in net value to your organisation. That's not a projection based on best-case assumptions - it's built on conservative
3% inflation (below the 3.8% historical average)
and your actual usage patterns.
Every LED proposal deserves scrutiny. But the question isn't "which quote is cheapest?"
It's "which delivers the most value over the next 30 years?"
The efficiency percentage tells you more about that than any other number on the page.
Visual Analysis
Visual Comparison: Current vs. Estimated
Understanding UGR Compliance
Workplace Standards
Click to hide
Why light quality matters in education - critical for Option C consideration
What is UGR<19 and Why Does It Matter?
✓ UGR Compliant (Options A & B)
Unified Glare Rating ≤ 19 for workspaces
Reduces eye strain and headaches
Improves concentration and sustained focus
Supports better reading fluency
Complies with EN 12464-1 standards
Protects staff wellbeing and comfort
Creates effective learning environment
⚠️ Non-UGR Compliant (Option C)
No glare control measures in place
Causes visual discomfort and eye strain
Increases fatigue and distraction
May trigger headaches or migraines
Impairs reading comprehension
Can exacerbate vision strain
Undermines learning quality
Workplace Research Findings
Studies consistently show that lighting quality affects how people work and feel in their environment. International standards
(EN 12464-1) recommend a Unified Glare Rating (UGR) ≤ 19 for office and task areas to avoid
discomfort glare. When workspaces meet this benchmark, staff experience less eye strain, fewer headaches, and improved
ability to concentrate for extended periods.
Research has linked low-glare, well-designed lighting to measurable productivity benefits: improved focus and
accurate reading, better comprehension, and calmer behaviour. Teachers also report less visual fatigue and more
effective task performance when lighting conditions are comfortable and consistent.
By contrast, non-UGR-compliant lighting — such as bare LED fittings — has been
associated with headaches, visual discomfort, reduced clarity on boards and screens, and heightened distraction. Poor
glare control can undermine both attendance and attainment.
Our Commitment: Unifi.id exclusively specifies UGR-compliant lighting fixtures
for workplace environments. While budget alternatives (Option C) may appear attractive on initial cost,
they compromise the working environment and can have long-term negative impacts on staff wellbeing and productivity.
Savings Contribution by Area
Lighting Transformation Details
Click to reveal
Hardware specifications & performance analysis
🔄
Performance metrics update automatically with your Scenario Planner
Values below reflect your current settings and will change as you adjust the controls.
Performance Metrics Below Update with Scenario Changes
▼
Performance by Area
Live Updates
Updates with scenario changes
▼
Fixture Lifespan by Area
Live Updates
Understanding the 29-year average (range: 21-60 years)
How we calculate the 29-year average:
Each area has different operational hours. High-use areas (like main halls) will need replacement sooner,
while low-use areas (like storage) last much longer. We weight by fixture count to give you a realistic
whole-site projection. Values update automatically when you adjust operational settings.
💡 Note: Lifespans shown capped at 60 years (the rated fixture life).
Some low-use areas may mathematically exceed this, but practical fixture life is limited by
component degradation (capacitors, drivers) rather than LED hours alone. All financial projections
use the weighted average shown above.
▼
Detailed Fixture Specifications
Fixed Data
View complete fixture list
Current Fixtures (To Be Removed)
Fixture Type
Qty
Unit Power
Total Load
LED Replacements (To Be Installed)
Fixture Type
Qty
Unit Power
Total Load
Additional Controls & Sensors (Included)
Control Type
Qty
Function
-
IP65 MICROWAVE SENSOR
74
Presence Detection
-
TOTAL CONTROLS
14
-
-
Technical Performance Advantages
⚡ Superior Quality
Professional-grade LED drivers ensure consistent, flicker-free light output and protect your investment with built-in surge protection.
🔧 Reduced Maintenance
High-quality drivers mean fewer failures, longer fixture life, and less disruption - crucial for maintaining a productive working environment.
📊 Smart Controls
PIR sensors in 5 areas deliver automatic 33-75% additional savings.
Investment Value & Long-Term Benefits
Understanding the complete value proposition
Click to hide
Here's What Most Businesses Don't Realise...
You're already paying for this LED upgrade – you're just not getting one. Every month, Svitzer Marine spends approximately
£800 on lighting energy.
But what if that £73 monthly saving
could be redirected into your core operations from day one?
Why "Whole of Life" Beats "Lowest Upfront Cost"
Most LED upgrade projects fall into the same trap: choosing the cheapest possible fittings to tick the "sustainability" box.
But in doing so, many businesses end up locking in higher long-term costs — paying more in energy bills, maintenance, and
replacements for years to come.
That's why we've taken a total cost of ownership approach to your lighting upgrade.
Our specified fixtures deliver 60,000 operational hours — with individual areas lasting
38-60 years based on usage patterns.
This isn't just about energy savings; it's about creating lasting value for your organisation.
*Fixture Lifetime Calculation:
Based on 60,000 hour fixture rating across all zones
Lifespan: 38-60 years(high-use areas replace sooner, low-use areas last longer)
*All projections update dynamically based on your operational settings
A Smarter Balance of Cost and Performance
For this project, we've focused on delivering the best long-term value within the practical budget constraints of a
commercial building. The fixtures we've selected offer a strong balance between affordability and durability —
significantly reducing the need for future replacements and lowering maintenance overhead.
This ensures you benefit from high-quality, energy-efficient lighting that cuts running costs year after year,
without compromising your upfront budget. It's a smarter investment that supports both operational and sustainability
goals in a way that's financially realistic.
The result? Over 34 years, that's
£300,000
in net benefit to your operating budget — money that goes directly back to your bottom line.
Beyond Energy Savings: The Complete Value Picture
Enhanced Working Environment
Superior light quality with CRI 80+ and reduced flicker. Research shows proper lighting improves concentration and can boost workplace productivity by up to 15%.
Operational Excellence
Virtually eliminate maintenance for the next decade. No more disrupted classes, emergency call-outs, or
budget surprises from failed tubes.
✓5-Year Parts & 3-Year on-site Labour Warranty - Complete peace of mind with comprehensive coverage on all fixtures and installation
✓Flexible, Low-Disruption Installation - We work around your operational schedule, with installations planned for evenings, weekends, or quieter periods to minimise disruption to your business
✓Future-Proof Technology - Compatible with smart controls and IoT integration when you're ready
✓UK-Based Support - Local technical team with rapid response for any issues
✓VAT Recovery Assistance - We guide you through reclaiming 20% of your project cost - the government effectively pays for a fifth of your upgrade
✓End-to-End Project Management - From initial survey to final commissioning, we handle everything
⚠️ The Hidden Costs of "Cheap" LED
Beware of contractors offering rock-bottom prices. Low-quality LEDs often deliver only 20,000-30,000 hours,
use inefficient drivers that waste energy, and suffer from colour shift and lumen depreciation within 2-3 years.
You'll end up replacing them twice while our fixtures are still performing at 90% output.
Smart Control Strategy
Maximising Efficiency
Beyond the core LED upgrade, strategic deployment of occupancy sensors transforms your energy profile
by ensuring lights operate only when spaces are occupied. The hours shown in the calculations already
reflect these intelligent reductions:
This comprehensive approach also avoids future retrofit costs. Installing sensors later -
particularly in corridors and circulation areas - would require additional mobilisation costs
and cause more disruption. By addressing all control upgrades now, we maximise efficiency
whilst minimising long-term costs. And of course using your PIR sensors will extend the life of your LED lights still further - by between ${minPirExtension}% and ${maxPirExtension}%.
Funding Options
Our funding approach is fundamentally different from models where financial structures are defined first and technical solutions are engineered around them. The technical design determines what savings are achievable; the funding model is then built around that reality. This ensures repayment schedules are based on realistic, defendable projections — not aspirational estimates.
Self-Funding: If you choose to self-fund this project, payment terms are 50% on order and 50% on completion. The simple payback period shown above indicates when the investment is fully recovered from energy savings alone.
Finance Options: Funding terms are typically 36–60 months, but can extend out to 10 years and beyond. They can be structured as monthly, quarterly, or annual repayments aligned to your budgeting cycles. Use the Funding Assumptions calculator opposite to explore terms, deposit amounts, and monthly costs. The dashboard auto-selects the shortest term that maintains positive monthly cashflow — meaning the project can be cash-positive from day one.
Funding can be arranged through your existing banking facilities, specialist education funding providers, or approved third-party finance partners. All solutions are designed to be fully compliant with public procurement rules and any financing regulations your institution may be subject to.
Asset Ownership & Long-Term Value
At the end of the funding term, a completion certificate is issued and full asset ownership transfers to you. You then retain 100% of ongoing savings for the remaining 20–25+ years of LED lifespan. This contrasts with extended Energy-as-a-Service models where service margins are embedded in long-term agreements, ownership may be deferred, and lifetime retained value may be diluted.
▼
Energy & Operational Calculations
Live Updates
Understanding how we calculate your savings
Transparent Methodology: Unlike typical LED proposals that present opaque "black box" calculations,
we show you exactly how every figure is derived. All values below update live as you adjust your operational settings -
you can verify every calculation yourself.
Energy Consumption (kWh)
Annual energy consumption calculated from first principles using fixture specifications and actual operating hours.
Annual kWh = (Quantity × Wattage × Daily Hours × Days per Year) / 1000
Zone-Specific Calculation:
• Different zones have different operating days (e.g., main building 195 days vs sports hall 320 days)
• Different areas have different daily hours based on usage patterns
• PIR sensors reduce effective hours in applicable areas
Live Example: Classrooms (Main Building)
Energy Cost (£)
Costs calculated using your electricity tariff rates, with optional day/night split for dual-tariff contracts.
Grid Intensity Factor:0.233 kg CO₂e per kWh Source: UK Department for Energy Security and Net Zero Scope: Scope 2 emissions (purchased electricity)
Live Example: Whole Site Annual Emissions
Fixture Lifespan & Replacement Cycles
Dynamic lifespan calculation based on actual operating hours and manufacturer-rated lifetime hours.
Lifespan (years) = Rated Hours / (Daily Hours × Days per Year)
Selected Option Rated Life:60,000 hours Your Weighted Average:29 years across all areas
Live Example: Classrooms
📊 Detailed Breakdown: See the "Fixture Lifespan by Area" section above for a complete
area-by-area analysis showing how different usage patterns affect replacement schedules.
Compounding Savings Over Time
Energy prices have historically risen faster than general inflation. When projecting long-term value,
we apply compound growth to annual savings to reflect the increasing real-world value of each kWh saved.
A kilowatt-hour saved today avoids not just today's cost, but the inflated cost that same kWh would carry in Year 10 or Year 20.
Where:
• Year 1 Savings = Annual kWh saved × current electricity rate
• Inflation Rate = Energy price inflation (default: 3.8% per annum)
• Σ = Sum across all years of fixture lifetime
Worked Example: 3.8% Energy Inflation Over 20 Years
Each year you generate a new saving. Because energy prices rise, each year's saving is worth more than the last.
Your lifetime benefit is the sum of all annual savings — each year's contribution added together:
Compare: Simple multiplication (£30,000 × 20) = £600,000 With compounding: £878,549 — that's £278,549 more value captured.
The True Cost of Delay
Delaying by one year doesn't just lose Year 1's £30,000 — it loses the compounded value
that £30,000 would have generated. That first year's savings, growing at 3.8% for 19 remaining years,
would contribute £59,873 to your lifetime total. Delay means you start the accumulation later and
permanently miss capturing those early years of compound growth.
📈 See It In Action: The "Compounding Savings" section above shows your building's
actual projected values using your specific annual savings and the energy inflation rate set in the sidebar.
Executive Summary
Option A
Conservative Projection
The Investment
Capital Required
£5,992
Simple Payback
2.3 years
Annual Savings
£2,576
Return on Investment
43% per year
Quality Assurance
Parts Warranty5 years
On-Site Labour3 years
Fixture Lifespan60,000+ hours
Payment Terms50% / 50%
The Returns
10-Year Value
£92k
30-Year Value
£276k
Value vs Investment
7.5x return
Sustainability Impact
Energy Reduction79%
CO₂ Reduction (tonnes)10.2t/yr
Lighting QualityUGR<19
Calculation Methodology:
Projections based on conservative operational estimates with
mixed-zone scheduling. Energy savings calculated using actual fixture
consumption data with PIR sensor optimisation in 4 areas. Financial returns assume
Day: £0.205/kWh, Night: £0.17/kWh electricity rates with 3.00% annual energy price inflation.
Recommendation:Approve LED upgrade with 60-month financing term
Zero capital risk with immediate operational savings and 25% annual ROI
For Svitzer Marine, the case is clear. This LED upgrade saves around £0 a year, pays for itself in about 0 years, and is worth roughly £0 over its lifetime.
Your environmental impact would be immediate – reducing emissions by 0%, the equivalent of planting around 0 trees every year.
Annual Savings:£0 •
Carbon Reduction:0 Tonnes •
0% Energy Reduction
Confidential & Proprietary: This interactive dashboard and all associated calculations,
methodologies, algorithms, and design elements are the exclusive intellectual property of Unifi ID Ltd.
Unauthorised reproduction, distribution, modification, or commercial use of any part of this dashboard
is strictly prohibited and may result in legal action. This dashboard is provided solely for the evaluation
of LED upgrade opportunities by the intended recipient organisation.