4th Day Energy

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Solar installer based in California · installer record #84 resolved from 422 public installation records.

Recorded installs

422

Total capacity

6.4 MW

DC nameplate

Median system

7.8 kW

≈ $29,148

Median price

$3.40/W

pre-incentive

Third-party owned

lease / PPA

Battery attach

First recorded

2007

Last recorded

2023

Track record

Install volume by year

2007

4$7.33/W

2008

5$7.09/W

2009

5$7.71/W

2010

8$5.83/W

2011

8$4.89/W

2012

3$4.40/W

2013

16$4.29/W

2014

42$3.94/W

2015

83$3.78/W

2016

70$3.47/W

2017

64$3.20/W

2018

37$3.20/W

2019

14$3.08/W

2020

14$2.80/W

2021

16$2.89/W

2022

18$3.30/W

2023

15$3.26/W

Bars: recorded installs · right column: this installer's median $/W that year.

Latest records

Most recent recorded installs

Date	Location	Size	Price	Ownership
Dec 18, 2023	Clovis, CA	3.6 kW	$15,127	Third-party · battery
Nov 21, 2023	Kingsburg, CA	17.8 kW	$70,000	Host-owned
Oct 2, 2023	Prather, CA	12.8 kW	$40,000	Host-owned
Sep 8, 2023	Tollhouse, CA	3.5 kW	$8,000	Host-owned
Aug 28, 2023	Fresno, CA	13.6 kW	$58,000	Host-owned · battery
Aug 2, 2023	Clovis, CA	8 kW	$27,200	Host-owned
Jul 19, 2023	Fresno, CA	4.8 kW	$16,224	Host-owned
Jul 14, 2023	Madera, CA	14.4 kW	$37,870	Host-owned
Jun 20, 2023	Madera, CA	8.2 kW	$8,000	Host-owned
Apr 6, 2023	Madera, CA	15.2 kW	$51,629	Third-party

Service geography

California: 422

Busiest cities

Fresno, CA 135Clovis, CA 89Fresno, CA 15Madera, CA 15Sanger, CA 13Clovis, CA 11Tollhouse, CA 10Hanford, CA 10

Record

Installer ID: PC-84
First recorded install: Aug 24, 2007
Last recorded install: Dec 18, 2023
Priced records: 343

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Frequently asked questions

How many solar installations has 4th Day Energy completed?

The Tracking the Sun dataset records 422 installations by 4th Day Energy, from Aug 24, 2007 to Dec 18, 2023, totalling 6.4 MW of capacity. Dataset coverage varies by state, so actual totals may be higher.

What does 4th Day Energy charge for solar?

The median installed price across 343 priced systems is $3.40/W pre-incentive (median system 7.8 kW, ≈ $29,148). Third-party-owned (lease/PPA) share: 5%.

Where does 4th Day Energy install solar?

Recorded installs span 1 state, led by California (422).

Dataset updated July 2026 . Source: LBNL Tracking the Sun public dataset; installer resolved by exact-normalized name matching.