Jinwu
Carriers of the sun

Guidance that starts with you.

Advice first. Installation by licensed partners.

What we do

We’re an independent solar advisor. We help you compare your options and size the system right. The install is performed and warranted by a licensed contractor we name up front.

Solar can be sold well. Most of the time it isn’t: one product, at one price, with a decision wanted before you have read anything. We start from your bill and your roof, we tell you what we actually find, and we stay reachable for the life of the system.

Who you contract with. Jinwu is an advisory practice, not a contractor. Every installation is performed, permitted, and warranted by a CSLB-licensed contractor, and your contract is with them, named to you before you sign, and verifiable on the state license board.

How it works

  1. We start with your bill.Twelve months of usage, your rate schedule, and when you actually use power. Not a guess from your square footage.
  2. Then the roof.Orientation, shading, condition, and what your electrical panel can carry. On new construction, the plans.
  3. We size it to your usage, and to what is coming.Right-sized to what you actually use, not the largest system that fits. We also ask what is changing: an electric car, a heat pump, a pool, an ADU, someone moving back home. Sizing to last year’s bill alone is how people end up under-built a year later. Bigger is not automatically better, and neither is smaller. We will show you the arithmetic.
  4. You meet the contractor.Named to you before you sign. You contract directly with them; they pull the permits, perform the work, and carry the workmanship warranty.
  5. We are still here afterward.Questions in year seven, a service call, a warranty claim: you call us and we bring the responsible party to it and stay with it until it is resolved.

Before you sign with anyone

This applies whether you work with us or not. A good salesperson will not mind you checking.

Verify the license yourself.
Every contractor has a CSLB license number, and every salesperson should have a Home Improvement Salesperson registration. Both are searchable free at cslb.ca.gov — by number or by name, complaint history included. An active license is not the same as a clean record; look at both.
Know your cancellation rights.
You have three business days to cancel a home improvement contract. Five if the buyer is 65 or older, seven after a declared emergency. No reason required. The down payment is capped at the lesser of $1,000 or 10%.
Ask for the CPUC guide.
California requires the Solar Consumer Protection Guide be given to you before you sign. If nobody hands it to you, that tells you something.
The contract must be in the language you were sold in.
If the conversation happened in a language other than English, the contract and the state disclosure document must be in that language too. This is your right, not a courtesy.
Read the production estimate, not the monthly payment.
Ask what the system is expected to produce, on what assumptions, and what happens if it does not. A payment figure without the assumptions behind it is not an estimate.

Walk away from

  • “Free solar,” “no-cost solar,” or “the government pays for it”
  • A guaranteed percentage of savings, or “eliminate your electric bill”
  • Pressure to sign today, or a price that expires this evening
  • Anyone implying they are sent by your utility, the state, or a government program
  • A salesperson who will not give you their name and registration number

Building multi-unit, ADU, or new construction? For builders and developers

Talk to us

Or reach us directly:

Emailjoshua@jinwuenergy.comPhone(925) 813-5083

Serving Northern and Southern California.