Prayag Production
Costing Analysis
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Category Plumbing PTMT
FY FY2026-27 FY2025-26 FY2023-24 FY2022-23
Contractor
⚠ Warnings & Alerts
Combined conversion cost +62% above ideal
Actual Rs 14.18/kg vs ideal Rs 8.75/kg.
→ Analyse labour rate/volume drivers and negotiate JVVL rate review.
Labour Rs/kg +52% above ideal
Actual Rs 5.93/kg vs ideal Rs 3.89/kg.
→ Review headcount vs production volume; consider contractor rationalisation.
Power Rs/kg +70% above ideal
Actual Rs 8.25/kg vs ideal Rs 4.86/kg (all-plant denominator).
→ Increase solar utilisation and reduce grid draw during peak tariff hours.
JUN: Power spike — +112% above ideal
Rs 10.82/kg actual vs Rs 5.10/kg ideal (low production volume 221,328 kg in this month).
→ Review production calendar — spreading fixed power charges over thin volume.
Paid hours exceed actual by 11.8%
Paid: 93,443 h | Actual: 82,415 h | Gap: 11,028 h
→ Audit attendance records; review shift scheduling efficiency.
Ideal rates advisory
Pipe labour ideal=Rs 2.50/kg, Fitting=Rs 6.50/kg, Pipe power=Rs 4.00/kg, Fitting power=Rs 8.00/kg. Verify these reflect current capacity norms.
→ Review with engineering if capacity/staffing norms have changed since baseline.
4-month snapshot · FY2026-27 (incl contractor)
Labour Actual
Rs 5.93/kg
Plumbing denom · 977,905 kg
Labour Ideal
Rs 3.89/kg
Pipe × Rs 2.50 + Fit × Rs 6.50
Labour Δ vs Ideal
+52%
Rs +2.04/kg over ideal
Power Actual
Rs 8.25/kg
All-plant denom
Power Ideal
Rs 4.86/kg
Pipe × Rs 4.00 + Fit × Rs 8.00
Combined Δ vs Ideal
+62%
Rs 14.18 vs Rs 8.75 ideal
⚠ Combined = Labour (Plumbing denominator) + Power (all-plant denominator). These use different production bases and cannot be directly summed to a single-denominator figure.
Monthly Cost Stack
MonthProd (kg) Labour Act.Labour IdealLab Δ% Power Act.Power IdealPwr Δ% Combined
APR 260,101 Rs 7.68 Rs 3.88 +98% Rs 8.94 Rs 4.80 +86% Rs 16.62
MAY 420,523 Rs 4.30 Rs 3.23 +33% Rs 5.81 Rs 4.74 +23% Rs 10.11
JUN 221,328 Rs 9.02 Rs 4.27 +111% Rs 10.82 Rs 5.10 +112% Rs 19.84
JUL 75,952 Rs 0.00 Rs 6.50 -100%
FY Total 977,905 Rs 5.93 Rs 3.89 +52% Rs 8.25 Rs 4.86 +70% Rs 14.18
Labour denom = Plumbing (pipe + fitting). Power denom = all plants (Plumbing + Garden + HDPE + Tank). Source: UNIT-2 tab + Ideal Power Cost tab, FY2026-27 workbook.
Labour Detail
Paid Wages (KH-1)
Rs 5,522,131
Excl contractor
Contractor Wages (UNIT-2)
Rs 277,280
Total Wages (incl contractor)
Rs 5,799,411
Labour Excl Contractor
Rs 5.65/kg
Pipe Production
637,410 kg
Fitting Production
340,495 kg
Paid vs Actual Hours
11.8% of paid hours not worked — 11,028 hrs gap (paid 93,443 vs actual 82,415)
MonthPaid HrsActual HrsGap (hrs)Gap %
APR 29,904 26,640 3,264 10.9%
MAY 30,068 26,134 3,934 13.1%
JUN 33,472 29,642 3,830 11.4%
Power Deep-Dive (UNIT-2)
UNIT-2 tab · per-kg power uses Plumbing denominator. "All-plant" column from Ideal Power Cost tab uses all-plants denominator.
Month JVVL (Rs) kWh cons. Rs/kWh Solar (kWh) kWh/kg Power/kg (7.08) Power/kg (11.5) Power/kg (all-plant) Ideal/kg (all-plant)
APR 2,533,643 335,780 Rs 9.20 60,380 1.29 Rs 11.38 Rs 12.41 Rs 8.94 Rs 4.80
MAY 1,907,328 286,155 Rs 8.36 58,140 0.68 Rs 5.51 Rs 6.13 Rs 5.81 Rs 4.74
JUN 2,949,559 384,641 Rs 8.70 45,566 1.74 Rs 14.78 Rs 15.69 Rs 10.82 Rs 5.10
FY Total 7,390,530 1,006,576 Rs 8,552,258 Rs 9,277,519 Rs 8.25 Rs 4.86
Ideal total power (all plants): Rs 5,470,449 · Actual: Rs 9,277,519
Month-over-Month Trends
MonthLabour Act. Rs/kgMoM ΔPower Act. Rs/kgMoM ΔCombined Rs/kgMoM Δ
APR 7.68 8.94 16.62
MAY 4.30 -44.1% 5.81 -35.0% 10.11 -39.2%
JUN 9.02 +109.9% 10.82 +86.2% 19.84 +96.3%
JUL 0.00 -100.0%
Year-over-Year vs FY2025-26
MonthMetricFY2026-27FY2025-26YoY Δ%
APR Labour Rs/kg (actual) 7.68 3.69 +108.1%
APR Labour Rs/kg (ideal) 3.88 3.16 +22.9%
APR Power Rs/kg (actual) 8.94 4.24 +110.8%
APR Combined Rs/kg 16.62 7.93 +109.6%
MAY Labour Rs/kg (actual) 4.30 4.14 +3.8%
MAY Labour Rs/kg (ideal) 3.23 3.29 -1.8%
MAY Power Rs/kg (actual) 5.81 4.97 +16.9%
MAY Combined Rs/kg 10.11 9.11 +11.0%
JUN Labour Rs/kg (actual) 9.02 3.37 +167.5%
JUN Labour Rs/kg (ideal) 4.27 3.14 +36.1%
JUN Power Rs/kg (actual) 10.82 4.35 +148.7%
JUN Combined Rs/kg 19.84 7.72 +156.9%
JUL Labour Rs/kg (actual) 0.00 3.40 -100.0%
JUL Labour Rs/kg (ideal) 6.50 3.19 +104.1%
JUL Power Rs/kg (actual) 4.84
JUL Combined Rs/kg 8.24
Cost Bridge — FY2025-26 → FY2026-27
Decomposition of change in Labour Rs/kg.
Rate = wage-rate change holding volume constant.
Volume = volume change holding wages constant.
Mix = structural shift in product mix (ideal Rs/kg change).
FY2025-26
Rs 4.16/kg · 5,160,315 kg
FY2026-27
Rs 5.93/kg · 977,905 kg
Rate effect
-16.01 Rs/kg
Volume effect
+17.78 Rs/kg
Mix effect
+0.64 Rs/kg
Total Δ
+1.77 Rs/kg
Residual: Rs -0.6366/kg (rounding artefact).
Volume Sensitivity (Labour + Power)
Based on 4-month actuals (977,905 kg). Labour modelled 90% fixed / 10% variable. Power modelled 35% fixed (demand charges) / 65% variable.
ScenarioVolume (kg)Labour Rs/kgPower Rs/kgCombined Rs/kg
Current 977,905 5.93 9.49 15.42
+10% 1,075,695 5.45 9.38 14.82
+20% 1,173,486 5.04 9.29 14.33
+30% 1,271,276 4.70 9.21 13.91
Sensitivity model assumes wages and JVVL demand charges are largely fixed in the short term. For production increases beyond current infrastructure, incremental capex costs are not captured here.
Data Sources & Methodology

Labour wages — KH-1 monthly wage files (department CPVC), authoritative for regular payroll. Contractor wages from UNIT-2 tab ("Paid Wages for Contractor Labour") — not separately verified against KH-1.

Fittings production (kg) — Report-12 (Wt in Kgs + Rejection), not the labour sheet which carries piece counts (mislabelled FY2026-27).

Ideal rates — Pipe Labour Rs 2.50/kg, Fitting Labour Rs 6.50/kg (from Ideal Labour Cost TOTAL row); Pipe Power Rs 4.00/kg, Fitting Power Rs 8.00/kg (from Ideal Power Cost TOTAL row). Verify with engineering if capacity norms have changed.

Power actuals — UNIT-2 tab of the annual workbook; per-kg cost uses Plumbing-only denominator. The "All-plant" per-kg (from Ideal Power Cost tab) uses Plumbing + Garden Pipe + HDPE + Tank denominator — the JVVL bill is a shared facility cost spread by volume.

Cost bridge — Labour only; uses 2-factor decomposition (Rate + Volume + Mix). Power bridge deferred pending prior-FY power tab loading.

Volume sensitivity — simplified model; actual Rs/kg at higher volumes depends on whether additional labour is required.