Tata Power Solar — TP540HG10B (Glass-Glass)
A specific, datasheet-verified bifacial module from Tata’s glass-glass line — not just the brand, the exact model.
Reviewed 23 August 2026
The TP540HG10B is a Mono PERC bifacial module from Tata Power Solar’s glass-glass line — glass on both the front and rear face (2mm each side) instead of a polymer backsheet, which is what makes bifacial gain possible: light reflected off the roof or ground reaches the rear cells too. Despite the "540" in the name, the datasheet covers a five-way power bin from 530W to 550W under this same model number, with 550W as the top bin and 21.29% module efficiency at that bin.
It carries a 12-year product warranty (material and workmanship) and a 30-year linear power-output warranty — longer than the 25-year performance warranty that is still the market norm — with the manufacturer citing a warranty claim rate under 0.07%. The frame is rated to withstand up to 5,400 Pa of snow/wind load, well above what most Indian roofs need, which matters more in cyclone-prone coastal states than inland.
The manufacturer states the module is "Made in India" at a Tata facility. That is necessary but not, by itself, proof that this exact SKU is currently listed on MNRE’s ALMM List-I or meets full DCR (cell + module domestic content) — see the Data Provenance note below before assuming subsidy eligibility.
For Installers & Engineers
Deeper technical detail beyond the homeowner-facing summary above.
Cell architecture: 144 half-cut M10 (182×91mm) mono PERC cells — half-cutting halves per-cell current, cutting resistive (I²R) losses and giving the module better shade tolerance and a flatter power curve under partial shading than full-cell modules.
Temperature behaviour: temperature coefficient of Pmax is −0.37%/°C, of Voc is −0.28%/°C, NOCT is 45±1°C. On a 65°C cell temperature in Indian peak summer (a realistic rooftop figure, well above the 25°C STC rating), that −0.37%/°C coefficient alone accounts for roughly a 15% power derate from nameplate — before any soiling or wiring losses. Size strings and inverter DC input accordingly, not off the STC number.
Bifacial gain: the datasheet states a bifacial factor of 70±10% — this is a lab-measured ratio of rear-face to front-face output under standard test conditions, NOT the real-world energy gain you should expect on a roof. As our Mono PERC Bifacial explainer covers, actual field gain runs roughly 8–11% on elevated, light-coloured RCC roofs and 2–3% on flush-mounted tin sheds — install geometry decides the real number, not the datasheet’s bifacial factor.
Electrical design: 1500V maximum system voltage, Application Class A, 25A maximum series fuse rating. Standard degradation profile: ~2.5% first-year, ~0.6%/year linear thereafter, consistent with the 30-year linear warranty reaching roughly 80% of rated output at year 30.
The Scorecard
How we scoreEfficiency & Real-World Yield
A genuinely modern bifacial spec (21.29% front efficiency, half-cut cells) with a real, datasheet-stated temperature coefficient rather than a rounded marketing number.
Durability & Degradation
A 30-year linear warranty, PID-resistant construction, and a 5,400 Pa static load rating are strong, specific, checkable claims — not vague durability language.
Warranty & Bankability
Tata’s brand bankability plus a longer-than-standard 30-year linear warranty and a stated sub-0.07% claim rate is a strong combination on paper.
Subsidy & Policy Fit
Manufacturer states "Made in India" but the datasheet does not confirm this SKU’s current ALMM List-I status — a real gap a buyer must close before assuming subsidy eligibility, which is why this scores below the brand-level review.
Value for Money
Priced at a premium consistent with the Tata brand; the ₹/W is only justified if you actually capture the bifacial and longevity advantages this specific model offers.
Strengths
- 30-year linear power warranty — longer than the 25-year market standard, on a datasheet-stated <0.07% warranty claim rate
- Glass-glass build with real bifacial gain potential on elevated, reflective-surface installations
- High static load rating (2,400/5,400 Pa) — genuinely useful in coastal/cyclone-exposed states
- Half-cut cell design improves partial-shade tolerance versus full-cell modules
Watch-outs
- "Made in India" on the datasheet is not the same as a confirmed current ALMM List-I entry for this exact SKU — verify before assuming PM Surya Ghar subsidy eligibility (see Data Provenance)
- The 21.29% efficiency figure applies to the top 550W bin only — confirm which bin (530–550W) you are actually being quoted
- Bifacial rear-side gain is installation-dependent; do not let a vendor quote the datasheet’s 70±10% bifacial factor as your expected real-world energy gain
- Glass-glass construction is heavier than a standard glass-backsheet panel (33±1 kg) — confirm your roof/structure load calculation accounts for this
Key Specifications
| Cell technology | Mono PERC, half-cut, 144 cells (182×91mm) |
|---|---|
| Power bin range / nameplate | 530–550 Wp (nameplate model bin: 540) |
| Max module efficiency | 21.29% (at 550W bin) |
| Temperature coefficient (Pmax) | −0.37 %/°C |
| Bifacial factor | 70 ± 10% (lab BSTC — not real-world field gain) |
| Construction | Glass-glass, 2mm front + 2mm rear |
| Max static load (wind/snow) | 2,400 / 5,400 Pa |
| Warranty | 12-yr product · 30-yr linear power output |
| Certifications shown on datasheet | TÜV Rheinland, CE, ISO 9001/14001/45001, Bureau Veritas, BIS |
| Made in India (manufacturer claim) | Yes — Tata facility, per datasheet |
| ALMM List-I status for this exact SKU | Not stated on datasheet — confirm on the current MNRE ALMM List-I before relying on it for subsidy |
Specifications marked “datasheet-stated” are manufacturer figures we have not independently measured. Always confirm the exact model on its current datasheet before purchase.
Who It’s For
- Homeowners on elevated RCC-roof mounts who want genuine bifacial gain, not just the marketing term
- Coastal or high-wind-zone installations where the 5,400 Pa static load rating has real value
- Buyers who weight a longer linear warranty (30 yr) over the cheapest ₹/W quote
Our Verdict
A well-specified, genuinely bifacial glass-glass module with a longer-than-standard linear warranty — the numbers on this datasheet are real and checkable, which is more than most quotes offer. The one thing we could not verify ourselves is whether this exact SKU is currently on MNRE’s ALMM List-I; confirm that in writing before you count on the PM Surya Ghar subsidy for it.
Frequently Asked Questions
Is the Tata Power Solar TP540HG10B eligible for the PM Surya Ghar subsidy?
Only if the specific unit you are quoted is currently listed on MNRE’s ALMM List-I and meets DCR (domestic cell + module) requirements. The datasheet states the module is "Made in India" but does not itself confirm ALMM listing — ask your vendor for the model’s current ALMM List-I entry number in writing before signing.
What does the 30-year linear power warranty actually guarantee?
A linear warranty guarantees a minimum output percentage that declines gradually each year rather than in a single "step" — based on the datasheet’s degradation chart (~2.5% in year 1, ~0.6%/year after), output is expected to remain around 80% of rated power at year 30. It is a manufacturer commitment, not a measured 30-year track record, since the panel itself hasn’t existed that long.
Will I actually get the datasheet’s bifacial gain on my roof?
Not automatically. The datasheet’s 70±10% bifacial factor is a lab measurement, not a real-world energy gain. Field data on elevated, light-coloured RCC roofs typically shows 8–11% extra generation; flush-mounted installs on tin sheds see closer to 2–3%. Ask your installer for a rear-side yield simulation specific to your roof, not the datasheet figure.
Data Provenance
- Verified on
- 23 August 2026
- ALMM status
- Unknown
- Source datasheet
- View official manufacturer datasheet
No paid rankings, no affiliate links. No manufacturer can pay for a score or a place on this page. We review published specifications and field reality against a transparent methodology — we are not a laboratory, and we never present a number as a test we did not run.