Battery Energy Storage

Solar + storage: cut demand charges, ride through outages, get paid for flexibility.

Solar without storage saves on kWh. Solar plus storage also saves on kW — the demand charges that quietly eat 30-50% of a commercial bill. SunRenu designs BESS sized to your actual load shape, not a one-size-fits-all kWh number.

What you get

The non-negotiables.

Demand-charge management

We model your interval data, identify your peak windows, and size storage to shave them. Payback comes from the kW line on your bill as much as the kWh line.

Outage resilience

Configurable backup for critical loads — server rooms, refrigeration, life safety, HVAC. Black-start ready when paired with solar.

Future-proof for utility programs

Commercial storage is the asset that unlocks utility incentives, time-of-use arbitrage, and demand-response payments as those programs roll out in AZ and CA.

Our approach

How a SunRenu energy storage project actually runs.

SunRenu starts with your utility interval data — typically 12-15 months of 15-minute reads. That tells us what your demand curve actually looks like, not what you think it does.

From there we size the battery against the demand line. The goal is not the biggest battery; it's the battery that pays for itself fastest.

Integration with existing or new PV happens at the inverter or DC level depending on your site. We model both and recommend the one with better economics for your specific load shape.

Recent energy storage projects