Battery dispatch and fault alerts for grid-tied village mini-grid operators
TL;DR Hamletwatt is software for companies that run solar mini-grids in Indian villages where the main grid exists but fails for hours each day. It forecasts outages and demand, decides when to charge and discharge the batteries, and flags failing parts early. Operators pay per site per month.
Almost every Indian village has a grid connection now. The Saubhagya scheme connected 2.82 crore households before it closed in 2022[1]. The wire is there but the power often isn't. A 2025 study found Uttar Pradesh households got 8.1 hours of grid supply a day on average in 2019[2].
Mini-grid companies fill those gaps and charge about US$0.22–0.55 per kWh (₹21–53)[2]. Their margins live and die on batteries, and one rural-electrification programme has warned that battery and electronics wear at rough rural sites often goes unnoticed until something breaks[3].
The seed pictured AI running rural microgrids to bring power to villages for the first time. We reframed it, because access is mostly done and the live need is reliability where a weak grid and a mini-grid share the same village.
Hamletwatt reads the meters, inverters and battery systems an operator already has. It learns each site's pattern of grid cuts and evening demand and then plans tomorrow's battery use - charge from solar and from cheap grid hours, hold some back for the likely evening outage and avoid the deep cycles that shorten battery life. When a string of panels lags or a battery cell drifts, a field technician gets a ticket with the likely cause.
A second view is for lenders and owners, with uptime, energy sold and battery health by site in one monthly report. The software doesn't sell power or set tariffs, so it needs no electricity licence of its own.
Mini-grid operators pay a monthly fee per site. The largest operator alone runs more than 100 sites in India[4], and state agencies own fleets too, like the 100-plus microgrids built for Chhattisgarh's renewable agency[5]. Investors who fund portfolios are a second buyer for the reporting layer, and battery suppliers offering performance warranties are a third.
A 2025 Nature Communications study showed grid-connected solar mini-grids can stretch supply hours and cut unit costs wherever the grid runs under about 16 hours a day[2]. That moves the business case from replacing the grid to topping it up, and topping up only works with careful battery scheduling. The largest operator now calls itself an AI-driven distributed energy platform[6], which tells you operators see software as part of the product.
Nobody publishes a count of Indian mini-grids. The narrowest figures are operator fleets. The largest operator ran over 100 Indian sites in 2022 and signed a pledge for 5,000 mini-grids by 2030 across its markets[4]. One big solar EPC lists 86 microgrids in Ladakh and over 100 in Chhattisgarh[5]. Until someone counts properly, a few thousand sites across India is a fair working ceiling.
The largest operator builds its own platform in-house[6], which proves the need but also means the biggest operator won't be your customer. Inverter and battery makers ship monitoring portals, though each one only sees its own hardware. Rural-electrification programmes publish monitoring guidance[3] and not software. What's missing is a hardware-neutral tool for small and mid-sized operators and state agency fleets.
| Difficulty | Moderate (46/100) |
| Starting capital | ₹1.2–2.2 Cr |
| Time to launch | 6–9 months |
The forecasting is the ordinary bit. The hard parts are pulling data from many inverter brands over patchy mobile links, proving a saving operators will pay for and selling to a small pool of buyers. Every operator runs different hardware too, so the integration work starts over with each new customer.
No electricity licence here, because the software advises an operator and never sells power.
Building this outside India? The categories above usually have a local equivalent, so check with your own regulator.
Don't trust the model blindly when the data is patchy. A site that dropped off the mobile network for two days will produce bad forecasts, so flag gaps before acting on them.
Want to work out the AI layer for Hamletwatt? Talk to Yash →
I'd pick this for a founder with power-electronics or energy-software experience who is happy to sell in Africa as well as India. If you're expecting a big Indian market then skip it. First prove on ten sites that the battery schedule cuts diesel use or battery wear by a number you can measure.
Plan for roughly ₹1.2–2.2 Cr, mostly on engineering and the integration work for each inverter brand. A ten-site pilot keeps early costs down.
No. The operator sells the power and follows state rules. You need the usual company registration, GST and DPDP compliance for meter data.
Yes, and you probably should, since the Indian market is small. Africa has many mini-grids too. Check local data protection law first.
The free Hamletwatt validation kit has the line-by-line capital breakdown, the effort scoring, the data and contract checklist, a 14-day validation sprint with pass/fail targets, a 90-day launch plan, 10 interview questions for mini-grid operators, and 5 assumptions to test. Download the kit →
Thinking about building Hamletwatt or something close to it? The make-or-break work is showing an operator a saving in rupees per site within one season, and I help founders build exactly that kind of proof. If you need a hand, you know where to find me. Talk to Yash →
For illustration only. Names are fictional and ideas hypothetical; sourced facts are real but may be out of date. Nothing here is legal, financial or professional advice, and Yash Khatri is not personally liable for any use of it. Read the full disclaimer.