Answer first: Solar panels make cheap power, but only when the sun shines — often not when your business needs it most. Adding battery storage captures that midday surplus and releases it in the expensive evening peak, so you use more of your own generation, cut demand charges, and keep critical loads running in an outage. Together, solar plus storage turns free sunshine into round-the-clock savings.

Why solar alone leaves money on the table

A solar array typically peaks at midday, when many businesses use less than they generate. That surplus gets exported for a low price — or curtailed — while the expensive evening peak is still served from the grid. Solar cuts your daytime bill, but it can't shift energy to when it's worth the most. Storage can.

How storage turns sunshine into savings

• Self-consumption — store midday surplus and use it in the evening instead of exporting it cheaply.
• Peak shaving — discharge during demand spikes to cut demand charges.
• Time-of-use arbitrage — use stored solar (or cheap off-peak grid power) during expensive peak hours.
• Backup power — keep critical loads running during outages, avoiding the cost of downtime.
• Avoided curtailment — capture generation that would otherwise be wasted when export is limited.

A day in the life of solar + storage

The benefits, stacked

The economics of solar plus storage come from combining benefits rather than relying on one. Higher self-consumption, lower demand charges, time-of-use arbitrage, and backup value add up — and because storage also works on non-sunny days by shifting cheap grid power, the system earns its keep year-round.

Sizing solar + storage

• Match storage to your surplus — size the battery to capture the midday solar you currently export or waste.
• Match power to your peaks — ensure the system can discharge fast enough to shave your demand spikes.
• Use interval data — your load and generation profiles determine the right capacity and power.
• Plan for growth — leave headroom if you expect to add load or an EV-charging depot.

Frequently asked questions

Why add storage to solar?

Solar generates most at midday, often when you need it least. Storage captures that surplus and releases it during expensive evening peaks, raising self-consumption, cutting demand charges, and providing backup.

Does solar plus storage work on cloudy days?

Yes. Even with little solar, the battery can charge on cheap off-peak grid power and discharge at peak, so it keeps saving money on non-sunny days.

How big should the battery be?

Size it to capture the midday solar you currently export or curtail, and to discharge fast enough to shave your demand peaks. Interval meter and generation data give the right size.

Can solar plus storage provide backup power?

Yes. With the right configuration, the battery keeps critical loads running during outages, and recharges from solar or the grid afterward.

Pair your solar with Jingye storage

Jingye New Energy manufactures LFP storage that pairs with solar — from 261kWh and 417kWh C&I cabinets to containerized systems — liquid-cooled, long cycle life, multi-level protection. Send your solar size and load profile and we'll help size storage to maximize self-consumption and savings. Contact [email protected].

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