- HT (high-tension) industrial consumers rarely get net metering — many states cap it by voltage or category.
- HT sites more often use net billing, gross metering, self-consumption or open access.
- For many factories, behind-the-meter self-use is the strongest case — they run when the sun shines.
- HT exports can carry wheeling, banking and other charges that change the maths.
- HT eligibility, surcharges and open-access rules are state-ERC specific — verify per state.
Industrial clients hear "net metering" and assume it is theirs to use. For most HT (high-tension) industrial connections, it is not. State policies often limit net metering by voltage level or capacity, and HT loads usually fall outside it. This guide shows EPCs why net metering for industrial sites rarely applies, and which models actually deliver.
HT versus LT consumers
An HT consumer is connected to the grid at high voltage, while an LT consumer is connected at low voltage. Homes and small shops are LT; large factories and big commercial sites are usually HT, because their loads are too large to draw at low voltage.
This distinction matters for solar, because net metering rules are often written around LT or sanctioned-load segments. The same rooftop solar that a small business connects under net metering may follow a completely different model when the site is HT.
Why net metering rarely applies to HT
Net metering rarely applies to HT consumers because many state policies cap it by voltage, capacity or consumer category, and HT loads usually exceed those caps. Regulators also tend to steer large exporters toward net billing or gross metering, where export is paid a defined rate rather than netted at retail.
The reason is partly grid balance. A large HT site exporting heavily at the retail-netted rate shifts more cost onto the distribution utility than a small home does. So regulators design the HT framework differently. Whether net metering is offered to HT at all is set by each state ERC, so verify the current rule with your state regulator before you design the system.
The metering options for HT industrial sites
When net metering is off the table, HT sites still have several good routes. The right one depends on the load profile and the state rules.
Net billing
Under net billing, your export is paid a separate, usually lower rate, while your import is charged at retail. It is a common HT option where export is allowed. The economics turn on the gap between the retail rate and the export rate — see net vs net-billing vs gross for the full picture.
Gross metering and open access
Gross metering sells all the generation at a fixed feed-in tariff, used where selling power, not self-use, is the goal. Open access lets a very large load wheel power from an offsite plant through the grid, but it carries wheeling, banking and other charges. The C&I net metering vs open access guide covers the open-access route in depth.
HT options compared
This matrix puts the HT options side by side so an EPC can match the model to the site. Treat it as indicative — the availability and charges are set per state.
Indicative only — HT eligibility, surcharges and open-access rules are state-ERC specific and volatile. Verify each option per state before designing (verify).
Where the rules vary the most
HT solar is one of the most state-dependent areas in net metering, so the figures and even the available models change across borders. Watch these in particular:
- HT eligibility — whether net metering is offered to HT at all.
- Surcharges — wheeling, banking, cross-subsidy and other charges on export.
- Capacity caps — the size at which the model switches.
- Open-access thresholds — the load level that unlocks open access.
All of these are set by the state ERC and can change with each order. Verify them per state before you commit a design or a savings number. The grid support and banking charges guide explains the charges that most often hit HT exports.
The self-consumption case
For many factories, the strongest case is not export at all — it is behind-the-meter self-consumption. A factory runs during the day, when solar is generating, so most of the solar offsets the site's own load directly at the retail rate. That offset is usually worth more than any export rate.
Size to the daytime load
When self-use drives the value, size the system to the factory's daytime load so little is exported. This sidesteps the export-rule complexity and the surcharges, and it often gives the best return. Confirm the load profile with metered data before you size, and verify the state export rules so any spill-over is handled correctly.
What to recommend
For an HT industrial client, lead with self-consumption, then choose an export model only if there is real surplus. A clear order of questions helps:
- What is the daytime load? — size to offset it first.
- Is there surplus? — only then does an export model matter.
- Does the state allow HT net metering? — verify; usually it is net billing or gross.
- What charges apply to export? — model the surcharges, not just the units.
- Is open access worth it? — for very large loads, run the full comparison.
How SuryaHub helps run HT jobs
Large HT jobs have many moving parts — the metering model, the surcharges, the DISCOM approvals, and a long build. SuryaHub helps an EPC run the whole job from design through DISCOM approvals to commissioning, with the metering model and charges captured per project so the team works off one source of truth. SuryaHub is pre-revenue; real pilots are Suryantra Energy and RGESPL, and every HT rule or charge here is state-specific and must be verified, not guaranteed.
Run complex HT jobs in one place
See how SuryaHub keeps the model, charges and approvals together.
Related guides
Frequently asked questions
Can industrial HT consumers get net metering?+
Industrial HT consumers can rarely get net metering, because many states limit net metering to lower-voltage or sanctioned-load segments. HT sites more often use net billing, gross metering or self-consumption. Whether net metering is offered to HT at all is set by each state ERC, so verify the current rule with your state regulator and DISCOM.
Why does net metering rarely apply to HT consumers?+
Net metering rarely applies to HT consumers because state policies often cap it by voltage level, capacity or consumer category, and HT loads usually exceed those caps. Regulators also prefer net billing or gross metering for large exporters. The exact eligibility is set by each state ERC, so verify the current HT rule before designing the system.
What metering options do HT industrial sites have?+
HT industrial sites usually choose between net billing, gross metering, behind-the-meter self-consumption, and open access for very large loads. Net metering is often unavailable to them. The best option depends on the load profile and the state rules, so verify the available models and any surcharges with your state ERC and DISCOM.
Is self-consumption better than net metering for factories?+
For many factories, behind-the-meter self-consumption is stronger than net metering, because a factory runs in daytime when solar is generating, so most solar offsets load directly at the retail rate. Export then matters less. Confirm the load profile and the state export rules before recommending a design.
Do HT solar exports face extra charges?+
HT solar exports can face extra charges such as wheeling, banking or other surcharges, especially under open access, and these vary by state. The charges can change the economics of exporting versus self-consuming. Verify the current surcharges with your state ERC and DISCOM before modelling the savings for an HT site.
How does SuryaHub help with industrial HT solar?+
SuryaHub helps an EPC run a large HT job from design through DISCOM approvals to commissioning, with the metering model and charges captured per project. The project tools keep complex industrial jobs organised. SuryaHub is pre-revenue; real pilots are Suryantra Energy and RGESPL.
Sources & references
The connection framework comes from the consumer rules and CEA standards; HT eligibility and surcharges come from each state ERC. Always confirm the current HT rules and charges against the state order before you design.
- Ministry of Power — Rights of Consumers Rules 2020 ↗
Consumer connection framework and metering rights.
- Central Electricity Authority (CEA) ↗
HT connection and grid-interconnection technical standards.
- State Electricity Regulatory Commissions (e.g. MERC) ↗
HT eligibility, surcharges and open-access rules — verify your state ERC.
Written by the SuryaHub team · reviewed against MoP, CEA & SERC sources · updated 19 June 2026.
Method: The framework is drawn from the sources above and re-checked every 30 days. HT eligibility, surcharges and open-access rules are state-ERC specific and volatile, so every figure must be verified per state. SuryaHub is pre-revenue; only Suryantra Energy and RGESPL are real pilots.
Change log: 19 Jun 2026 — first published.