Use Cases
Adaptive Control to Target Multiple Revenue Streams
Sponge EMaaS
Adaptive Control Architecture
ENGINE
ESS Strategies
Sponge targets every revenue stream your battery is eligible for.
Peak Demand Shaving
Demand charges are billed on the highest 15-minute interval each month. Sponge monitors consumption continuously and dispatches before peaks form — reducing the billable demand figure and the Global Adjustment exposure that comes with it.
Solar Self-Consumption
Midday solar generation often outpaces facility load. Sponge captures the surplus in the battery and dispatches during evening hours — replacing grid energy at peak rates instead of exporting at curtailed or zero value.
Time-of-Use Arbitrage
Ontario ULO rates span from 7.9¢/kWh overnight to 43.1¢/kWh at on-peak. Sponge charges on cheap overnight power and dispatches during peak pricing windows — banking the spread on every cycle.
Demand Response
Integrates with IESO, VPP, and LDC programs. Dispatches on grid signals to capture demand response revenue your client didn't know was available — no manual enrollment, no missed events.
Export Control
Some utilities prohibit grid export. Sponge reads real-time export power via RS485 and adjusts the PV setpoint continuously — meeting interconnection requirements without curtailing generation. One-time commissioning, no subscription.
Busbar Protection
Monitors real-time current at the busbar and dispatches the battery ahead of overcurrent events. Prevents nuisance tripping on protection relays during load spikes — keeping the facility online when it matters most.
Rate Class Switching
Ontario Class B facilities on GS-Demand billing pay ~$26/kW/month. Hold peak demand below 50 kW and the utility switches you to TOU rates. Sponge executes this automatically — no manual monitoring, no threshold drift as loads shift.
Outage Protection
When outage risk is detected — via weather, grid signals, or historical fault patterns — Sponge charges the battery to 100% and holds it there. The facility stays online. No manual override, no guesswork about when to top up.
Generator Reduction
Sites with backup generators incur fuel and runtime costs every time the generator runs. Sponge dispatches the battery first to cover load gaps — reducing generator starts, cutting fuel spend, and extending maintenance intervals.
Project Examples
Cases where Sponge is proving its metal.
Dairy Farm
This site had an existing 100kW Net Meter System, but was plagued with a high electricity bill due to demand charges. Sponge executed a peak shaving strategy to reduce annual peak demand average below 50kW, allowing the site to switch rate classes. They switched to a rate class where time-of-use pricing is available, so they earn more on the solar they export.
Battery Size
432 kWh
Payback Period
6.4 years
Bill Reduction
72%
Annual Savings
$22,300
Industrial Facility
This industrial facility has an intensive 12-hour day shift and very little power consumption at night. A solar load displacement system offsets a good deal of the energy, while a large battery executing a peak shaving strategy reduces the facility's heavy demand charges.
Battery Size
522 kWh
Payback Period
5.4 years
Bill Reduction
54%
Annual Savings
$53,798
Elementary School
BC Hydro's ESI Program offers a massive 80% capital rebate on batteries that participate in their Virtual Power Plant program for 10 years. Sponge balances meeting VPP requirements with other ESS strategies to minimize the investment payback period.
Battery Size
1,254 kWh
Payback Period
6.6 years
Bill Reduction
57%
Annual Savings
$42,415
Off-Grid Resort
Sponge uses solar production and onsite consumption forecasts to make intelligent decisions about when to turn the generator on and off. We minimize battery charging from the generator and maximize battery charging from the sun.
Battery Size
1,650 kWh
Payback Period
4.5 years
Diesel Reduction
12%
Annual Savings
$42,512
Run a simulation on your next project.
Upload your client’s Green Button data. We’ll show you exactly which use cases apply, what the savings look like, and what payback period you can put in front of them.