Measure, don't estimate
A wattmeter on each machine reads energy, power, current and power factor. Data available in real time, through a dashboard or API.
See every kWh. Cut the waste.
The first vertical of the LemonLights platform: we measure energy machine by machine — wireless — validate your utility bills and tell you which machines run off-profile and what it costs you.
Validate the bills
We recalculate the invoice against measured consumption, line by line. Surface mismatches, improper charges and room to negotiate.
Savings that stick
Spot waste, peaks and out-of-threshold machines. Less energy per part, less CO₂ — without stopping the line.
Your plant, readable at a glance.
From wattmeter to dashboard, every machine becomes data. Compare lines, isolate peaks and track average €/kWh in real time.
- LoRa radio, 868 MHzNo signal wiring: the wattmeter transmits over LoRa.
- A clear dashboardKPIs, trends and alerts in one view.
- Threshold alertsGet notified when a machine drifts from expected use.
The bill, recalculated on real data.
We compare every billed line against an internal recalculation on measured consumption. The verdict in plain language, before the technical detail.
- Line by lineDispatching, system charges, energy: all verified.
- A plain verdictA readable one-line verdict, with the detail below.
Result: 1 line to check
To check —
system charges are billed 21.60 € above the recalculation: a difference to clarify with the supplier. The other components match within rounding.
Period
03 · 2026
POD
IT000E…0000
Avg. power factor
0,94
Total cost
0,2143€/kWh
Billed / recalculated comparison
| Component | Billed | Recalc. | Delta | Result |
|---|---|---|---|---|
| Active energy | 8,214.50 € | 8,214.50 € | 0.00 € | OK |
| Dispatching | 1,092.30 € | 1,090.10 € | 2.20 € | OK |
| System charges | 2,498.40 € | 2,476.80 € | +21.60 € | To check |
| Transport | 934.10 € | 933.70 € | 0.40 € | OK |
| Total | 12,739.30 € | 12,715.10 € | +24.20 € | To check |
Typical results, measured in the field.
Three typical engagements, three numbers you read on the bill: representative figures, not named case studies.
Profile extrusion
−9%
annual energy spend
Monitoring 38 machines and 4 main switchboards, we optimised process parameters and pinpointed energy waste. Power-factor correction and rescheduling cut the spend, without touching production output.
42measurement endpoints
7 mopayback
Plastics moulding
−15%
compressed-air costs
Wattmeters and flow sensors let us pinpoint plant areas and times of day with unexpected consumption. A targeted maintenance campaign and pressure regulators to segment the compressed-air distribution loop cut the compressors' workload.
11leaks sealed
5 mopayback
Food & beverage
9.400 €
recovered on the bill
A 12-month validation found undue system charges. Refund obtained from the supplier, with the recalculation backing the negotiation.
12months recalculated
3items corrected
For energy-intensive companies, measuring is already an obligation.
Audits, management systems and incentives all rest on real consumption data. The LemonLights system provides the machine-by-machine measurement needed to support compliance and access the schemes available in Italy.
D.Lgs 102/2014
Energy audit
Mandatory every four years for large and energy-intensive companies, and to be based on measured data. You reach the audit with the measurements already in hand, per machine.
ISO 50001
Management system
The standard requires measuring significant energy uses and demonstrating improvement over time: continuous monitoring provides both.
ASOS relief
Energy-intensive companies
Keeping the relief requires efficiency measures and the ability to prove their effect over time. Measured data is the proof.
Transition 5.0
Tax credit
The incentive requires certified savings, ex-ante and ex-post: consumption must be measured before and after the intervention.
Thresholds and deadlines change over time: we help you work out whether and when you fall among the obligated parties.
Check your obligations
Good Energy
CO₂ avoided, calculated from measured kWh.
We work on energy efficiency for industrial companies. For every MWh of electricity saved we count 0.236 t of CO₂ avoided (ISPRA 2024 consumption factor) and write it in the report, next to the kWh and the euros.
Good Energy
Find out how much you're overpaying.
A 30-minute demo: we show you the dashboard, read one of your bills together and estimate your plant's savings potential.